[TOC] [INTRO] [LEVEL 1B] [LEVEL 2] [LEVEL 3 MAP] [LEVEL 3 BINNED] [LEVEL 3 BINNED MAP]
[ADEOS HOME]

LEVEL 1A DATA

Introduction
Naming Convention
Global Attributes
V Group

Introduction

OCTS Level 1A products are classified into three products following the data acquisition and processing method:

GAC(Global Area Coverage)
LAC (Local Area Coverage)
RTC (Real Time Coverage)

Each Level 1A product is divided into two subproducts. One stores visible and near infrared observation data (OCTS band 1 to 8) and the other stores thermal infrared data (OCTS band 9 to 12).
Each GAC product contains one scene data that observed with the same tilt angle continuously within sun shining period: tilt segment. GAC data are subsampled from full-resolution data, with about every sixth pixel of a scan line and every fifth line recorded.
LAC data consists of the whole tilt segment data or about half the size of the tilt segment data, but not subsampled.
RTC data have a coverage at EOC, but if the tilt angle is changed, the data is divided into two scenes (products).

Note that the data types in throughout this document are expressed with followings:

Ch character line
Short 2 byte integer (signed)
Ushort 2 byte integer (unsigned)
Long 4 byte integer (signed)
Ulong 4 byte integer (unsigned)
Real 4 byte real number
Double 8 byte real number
Byte 1 byte integer

Ch	character line
Short	2 byte integer (signed)
Ushort	2 byte integer (unsigned)
Long	4 byte integer (signed)
Ulong	4 byte integer (unsigned)
Real	4 byte real number
Double	8 byte real number
Byte	1 byte integer

Naming Convention

GAC	L1AVNG (Visible and Near Infrared), L1ATIG (Thermal Infrared)
LAC	L1AVNL (Visible and Near Infrared), L1ATIL (Thermal Infrared)
RTC	L1AVNR (Visible and Near Infrared), L1ATIR (Thermal Infrared)
Solar calibration	L1AVNS (Visible and Near Infrared)
Lamp calibration	L1AVNO (Visible and Near Infrared)
Electronic calibration	L1AVNE (Visible and Near Infrared), L1ATIE (Thermal Infrared)

Structure of level 1A product
Scan-Line Attributes
svpxl
evpxl
msec
miss_qual
eng_qual
s_satp
pre
pxl
det
lat
lon
Navigation
orb_vec
orb_vel
sun_ref
att_ang
Sensor Tilt
tilt_seg
Spacecraft Time Error
num_inf
obit_count
start_time
end_time
period_count
ref_count
ref_time
Raw ADEOS Data
octs_tlm
l1a_data
blk_data
Converted Telemetry
sc_time
off_time
opr_mode
DSP_sys
tilt_flag
tilt
gain
SDE_sys
inst_temp
bb_temp
AMUX_v
const_i
sc_att
Orbit Data
num_rec
precision
utc_tai
ut1r_tai
polar_motion
start_date
interval
num_points
sc_pos
sc_vel
x bands
raw radiance counts
(0 - 1023)

Calibration

t_gain t_offset

beta_d beta_p

beta_am beta_ad

beta_oam beta_oad

ref_temp eta

linearity_V linearity_R

temp rad

opt_vec opt_a

mirror_e scan_axis_e

scan_m_a scan_ang

rad_tbl_size

rad_tbl rad_coef

Subsampling Table
num_tables
start_line
samp_table

V group name (Tag = VG)	V group class
refer Naming Convention	CDF0.0

Mission and Documentation

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Product Name	1	Ch	7	refer Naming Convention	The name of the product file (without path)
Title	1	Ch	23	"OCTS Level-1A GAC Data"	GAC or
				"OCTS Level-1A LAC Data"	LAC or
				"OCTS Level-1A RTC Data"	RTC
Data Center	1	Ch	31	"NASDA/Earth Observation Center"	OCTS Data Processing Center (National Space Development Agency of Japan)
Station Name	1	Ch	31	"NASDA/Earth Observation Center" : RTC	OCTS Data Acquisition Center (only for RTC)
Station Latitude	1	Real	4		Lat. of Data Acq. Center (only for RTC)
Station Longitude	1	Real	4		Long. of Data Acq. Center (only for RTC)
Mission	1	Ch	11	"ADEOS OCTS"	Mission (satellite name and sensor name)
Mission Characteristics	1	Ch	189	"Nominal orbit: inclination = 98.59 (Sun-Synchronous); node = 10:15-10:45 AM (descending); eccentricity <= 0.0012; altitude = 797km; ground speed = 6.6km/sec; revolutions per day = 14+11/41"
Sensor	1	Ch	43	"Ocean Color and Temperature Scanner (OCTS)"
Sensor Characteristics	1	Ch	123	"Number of bands = 12; number of detectors per band = 10; bits per pixel = 10; scan period = 0.905sec; bit rate = 3Mbit/sec"
Data Type	1	Ch	4	"GAC"	GAC
				"LAC"	LAC
				"RTC"	RTC
				"SOL"	Solar calibration
				"LAM"	Lamp calibration
				"ELE"	Electronic calibration
Data Sub-type	1	Ch	26	"Visible and Near-infrared"
Data Sub-type	1	Ch	17	"Thermal-infrared"
Replacement Flag	1	Ch	9	"ORIGINAL"	If this is the first version of this product delivered to the NASDA/EOC.
Software ID	1	Ch	4	"X Y"	Identities version of the operational software used to create this product. X : OCTS software version Y : OCTS database version
Processing Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Local time of generation of this product.
Processing Control	1	Ch	928	refer Process Product Order (OCTS)	All input and processing control parameters used by the calling program to generate the product.
Processing Log	1	Ch	728	refer Process Work Result (OCTS)	Processing status information.

Data Time

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Start Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the first scan line of the scene. (UT)
End Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the last scan line of the scene. (UT)
Scene Center Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Center time of the center scan line of the scene. (UT)
Node Crossing Time	1	Ch	22	YYYYMMDD hh:mm:ss.ttt	Descending node crossing time. (UT)
Start Year	1	Short	2		Year of first scan line of the scene.
Start Day	1	Short	2		Day-of-year first scan line of the scene.
Start Millisec	1	Long	4		Milliseconds-of-day of start of the first scan line of the scene.
End Year	1	Short	2		Year of last scan line of the scene.
End Day	1	Short	2		Day-of-year last scan line of the scene.
End Millisec	1	Long	4		Milliseconds-of-day of start of the last scan line of the scene.
Orbit Number	1	Long	4

Data Quality

[v] : Visible and Near-infrared, [t] : Thermal-infrared

V data name
(Tag = VH) Nb of data Type Size
(bytes) Data (Tag = VS) Contents
Pixels per Scan Line 1 Long 4 variable (= p) Number of pixels per scan line. GAC
2222 LAC(including ELE) , RTC
180 SOL
80 LAM
Number of Scan Lines 1 Long 4 Number of scan lines in the scene.
Lines per Scan 1 Long 4 2 Number of lines per scan. GAC
10 LAC, RTC
Missing Frames 1 Long 4 Missing frame (scan) count.

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Pixels per Scan Line	1	Long	4	variable (= p)	Number of pixels per scan line. GAC
2222	LAC(including ELE) , RTC
180	SOL
80	LAM
Number of Scan Lines	1	Long	4		Number of scan lines in the scene.
Lines per Scan	1	Long	4	2	Number of lines per scan. GAC
10	LAC, RTC
Missing Frames	1	Long	4		Missing frame (scan) count.

File Metrics

[v] : Visible and Near-infrared, [t] : Thermal-infrared

V data name
(Tag = VH) Nb of data Type Size
(bytes) Data
(Tag = VS) Contents
Saturated Pixels 8 : [v]
4 : [t] Long 32 : [v]
16 : [t] Number of saturated pixels in valid range for each band. (array for number of bands)
Non-Saturated Pixels 8 : [v]
4 : [t] Long 32 : [v]
16 : [t] Number of not saturated pixels in valid range for each band. (array for number of bands)

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Saturated Pixels	8 : [v] 4 : [t]	Long	32 : [v] 16 : [t]		Number of saturated pixels in valid range for each band. (array for number of bands)
Non-Saturated Pixels	8 : [v] 4 : [t]	Long	32 : [v] 16 : [t]		Number of not saturated pixels in valid range for each band. (array for number of bands)

Scene Coordinates

(only for observation mode; OBS)

V data name
(Tag = VH) Nb of data Type Size
(bytes) Data
(Tag = VS) Contents
Latitude Units 1 Ch 14 "degrees North" Units used for all lat. values in this product.
Longitude Units 1 Ch 13 "degrees East" Units used for all long. values in this product.
Scene Center Latitude 1 Real 4 Latitude of the center point of the scene's center scan.
Scene Center Longitude 1 Real 4 Longitude of the center point of the scene's center scan.
Upper Left Latitude 1 Real 4 Latitude of the upper left scene corner.
Upper Left Longitude 1 Real 4 Longitude of the upper left scene corner.
Upper Right Latitude 1 Real 4 Latitude of the upper right scene corner.
Upper Right Longitude 1 Real 4 Longitude of the upper right scene corner.
Lower Left Latitude 1 Real 4 Latitude of the lower left scene corner.
Lower Left Longitude 1 Real 4 Longitude of the lower left scene corner.
Lower Right Latitude 1 Real 4 Latitude of the lower right scene corner.
Lower Right Longitude 1 Real 4 Longitude of the lower right scene corner.
Orbit Node Longitude 1 Real 4 Longitude of orbit descending node.
RSP path 1 Short 2 RSP path number of the scene's start.
Start argument of Latitude 1 Real 4 Argument of latitude of the scene's start.
End argument of Latitude 1 Real 4 Argument of latitude of the scene's end.

V data name (Tag = VH)	Nb of data	Type	Size (bytes)	Data (Tag = VS)	Contents
Latitude Units	1	Ch	14	"degrees North"	Units used for all lat. values in this product.
Longitude Units	1	Ch	13	"degrees East"	Units used for all long. values in this product.
Scene Center Latitude	1	Real	4		Latitude of the center point of the scene's center scan.
Scene Center Longitude	1	Real	4		Longitude of the center point of the scene's center scan.
Upper Left Latitude	1	Real	4		Latitude of the upper left scene corner.
Upper Left Longitude	1	Real	4		Longitude of the upper left scene corner.
Upper Right Latitude	1	Real	4		Latitude of the upper right scene corner.
Upper Right Longitude	1	Real	4		Longitude of the upper right scene corner.
Lower Left Latitude	1	Real	4		Latitude of the lower left scene corner.
Lower Left Longitude	1	Real	4		Longitude of the lower left scene corner.
Lower Right Latitude	1	Real	4		Latitude of the lower right scene corner.
Lower Right Longitude	1	Real	4		Longitude of the lower right scene corner.
Orbit Node Longitude	1	Real	4		Longitude of orbit descending node.
RSP path	1	Short	2		RSP path number of the scene's start.
Start argument of Latitude	1	Real	4		Argument of latitude of the scene's start.
End argument of Latitude	1	Real	4		Argument of latitude of the scene's end.

V Group

Scan-Line Attributes
Raw ADEOS Data
Converted Telemetry
Navigation
Sensor Tilt
Calibration
Spacecraft Time Error
Orbit Data
Subsampling Table

Of the following eight V groups, four V groups, Scan-Line Attributes, Raw ADEOS Data, Converted Telemetry, and Navigation, contain data that are functions of scan lines. That is, each data object within these V groups have data for each scan line and is therefore dimensioned by the value of the global attribute, Number of Scan Lines. Thus, to get all the data corresponding to a specific scan line, n, the n th values of all data objects in these four V groups would need to be read.

Scan-Line Attributes

V group name (Tag = VG) V group class
Scan-Line Attributes Scan_Line_Data

V group name (Tag = VG)	V group class
Scan-Line Attributes	Scan_Line_Data

[v] : Visible and Near-infrared, [t] : Thermal-infrared, [G] : GAC, [L] : LAC/RTC

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

n : Number of address calculating latitude and longitude (dimension of which V group name is "pxl")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
svpxl 8 : [v]
4 : [t] "bands" "Start valid pixel" Short 16 : [v]
8 : [t] Start pixel number of valid pixel range (valid pixel range: pixels for valid scan range of 1400km)
evpxl 8 : [v]
4 : [t] "bands" "End valid pixel" Short 16 : [v]
8 : [t] End pixel number of valid pixel range
msec s "rec" "Scan-line time, milliseconds of day" valid_range =
(0 , 86399999) Long 4xs Milliseconds of day.
miss_qual s "rec" "Missing frame flag" Ushort 2xs Flag indicating missing OCTS frame.
eng_qual s , 24 "rec", "flag" "Engineering data-out-of-range flags" Byte 24xs Flags indicating abnormal telemetry value.
s_satp 8 , 2xs : [v,G]
8 , 10xs : [v,L]
4 , 2xs : [t,G]
4 , 10xs : [t,L] "bands", "lines" "Number of saturated pixels per band" Short 32xs : [v,G]
160xs : [v,L]
16xs : [t,G]
80xs : [t,L] Number of saturated pixels per band.
pre s , 128 "rec", "pref" "Prefix data" Byte 128xs Prefix data of Level-0.
pxl n "pxls" "Column direction address of pixels" Short 2xn Column direction addresses of pixels calculating latitude and longitude.
det 2 : [L]
1 : [G] "dets" "Detector number of pixels" valid_range =
(1 , 10) Short 4 : [L]
2 : [G] Detector number of pixels calculating latitude and longitude.
lat s , n : [v,G]
8, 2xs , n : [v,L]
s , n : [t,G]
4 , 2xs , n : [t,L] "rec", "pxls" : [G]
"bands", "rec2", "pxls" : [L] "Scan point latitude" valid_range =
(-90 , 90) Real 4xnxs : [v,G]
64xnxs : [v,L]
4xnxs : [t,G]
32xnxs : [t,L] Latitude of above addressed pixels.
lon s , n : [v,G]
8, 2xs , n : [v,L]
s , n : [t,G]
4 , 2xs , n : [t,L] "rec","pxls" : [G]
"bands", "rec2", "pxls" : [L] "Scan point longitude" valid_range =
(-180 , 180) Real 4xnxs : [v,G]
64xnxs : [v,L]
4xnxs : [t,G] 32xnxs : [t,L] Longitude of above addressed pixels.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
svpxl	8 : [v] 4 : [t]	"bands"	"Start valid pixel"		Short	16 : [v] 8 : [t]	Start pixel number of valid pixel range (valid pixel range: pixels for valid scan range of 1400km)
evpxl	8 : [v] 4 : [t]	"bands"	"End valid pixel"		Short	16 : [v] 8 : [t]	End pixel number of valid pixel range
msec	s	"rec"	"Scan-line time, milliseconds of day"	valid_range = (0 , 86399999)	Long	4xs	Milliseconds of day.
miss_qual	s	"rec"	"Missing frame flag"		Ushort	2xs	Flag indicating missing OCTS frame.
eng_qual	s , 24	"rec", "flag"	"Engineering data-out-of-range flags"		Byte	24xs	Flags indicating abnormal telemetry value.
s_satp	8 , 2xs : [v,G] 8 , 10xs : [v,L] 4 , 2xs : [t,G] 4 , 10xs : [t,L]	"bands", "lines"	"Number of saturated pixels per band"		Short	32xs : [v,G] 160xs : [v,L] 16xs : [t,G] 80xs : [t,L]	Number of saturated pixels per band.
pre	s , 128	"rec", "pref"	"Prefix data"		Byte	128xs	Prefix data of Level-0.
pxl	n	"pxls"	"Column direction address of pixels"		Short	2xn	Column direction addresses of pixels calculating latitude and longitude.
det	2 : [L] 1 : [G]	"dets"	"Detector number of pixels"	valid_range = (1 , 10)	Short	4 : [L] 2 : [G]	Detector number of pixels calculating latitude and longitude.
lat	s , n : [v,G] 8, 2xs , n : [v,L] s , n : [t,G] 4 , 2xs , n : [t,L]	"rec", "pxls" : [G] "bands", "rec2", "pxls" : [L]	"Scan point latitude"	valid_range = (-90 , 90)	Real	4xnxs : [v,G] 64xnxs : [v,L] 4xnxs : [t,G] 32xnxs : [t,L]	Latitude of above addressed pixels.
lon	s , n : [v,G] 8, 2xs , n : [v,L] s , n : [t,G] 4 , 2xs , n : [t,L]	"rec","pxls" : [G] "bands", "rec2", "pxls" : [L]	"Scan point longitude"	valid_range = (-180 , 180)	Real	4xnxs : [v,G] 64xnxs : [v,L] 4xnxs : [t,G] 32xnxs : [t,L]	Longitude of above addressed pixels.

Raw ADEOS Data

V group name (Tag = VG)	V group class
Raw ADEOS Data	Scan_Line_Data

[v] : Visible and Near-infrared, [t] : Thermal-infrared, [G] : GAC, [L] : LAC (including ELE)/RTC, [S] : SOL, [O] : LAM

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

p : Number of pixels per line ("Pixels per Scan Line" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
octs_tlm s, 120 "rec", "instr" "OCTS instrument telemetry" Ushort 240xs Raw telemetry data in OCTS frame.
l1a_data 8, 2xs, p : [v,G]
8, 10xs, 2222 : [v,L]
8, 10xs, 180 : [v,S]
8, 10xs, 80 : [v,O]
4, 2xs , p : [t,G] 4 , 10xs , 2222 : [t,L] "bands", "lines", "nsamp" "Level-1A data" valid_range =
(0 , 1023) Ushort 32xpxs : [v,G]
355520xs :[v,L]
14400xs : [v,S]
6400xs : [v,O]
16xpxs : [t,G]
177760xs : [t,L] OCTS Level-1A raw data.
blk_data 8, 10xs, 5 : [v]
4, 10xs, 5 : [t] "bands", "blines", "bsamp" "Black body data" valid_range =
(0 , 1023) Ushort 800xs : [v]
400xs : [t] OCTS black body observation data.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
octs_tlm	s, 120	"rec", "instr"	"OCTS instrument telemetry"		Ushort	240xs	Raw telemetry data in OCTS frame.
l1a_data	8, 2xs, p : [v,G] 8, 10xs, 2222 : [v,L] 8, 10xs, 180 : [v,S] 8, 10xs, 80 : [v,O] 4, 2xs , p : [t,G] 4 , 10xs , 2222 : [t,L]	"bands", "lines", "nsamp"	"Level-1A data"	valid_range = (0 , 1023)	Ushort	32xpxs : [v,G] 355520xs :[v,L] 14400xs : [v,S] 6400xs : [v,O] 16xpxs : [t,G] 177760xs : [t,L]	OCTS Level-1A raw data.
blk_data	8, 10xs, 5 : [v] 4, 10xs, 5 : [t]	"bands", "blines", "bsamp"	"Black body data"	valid_range = (0 , 1023)	Ushort	800xs : [v] 400xs : [t]	OCTS black body observation data.

Converted Telemetry

V group name (Tag = VG)	V group class
Converted Telemetry	Scan_Line_Data

[v] : Visible and Near-infrared, [t] : Thermal-infrared

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
sc_time s "rec" "Spacecraft counter time" Ulong 4xs Spacecraft time counter value.
off_time s "rec" "Offset time of scan" Ushort 2xs Scan time offset value. (delta T)
opr_mode s "rec" "Operation mode" valid_range =
(0 , 4) Ushort 2xs Observation mode. (DSP status) (observation; OBS = 0, lamp1; LAM = 1, lamp2; LAM = 2, solar; SOL = 3, electronic; ELE = 4)
DSP_sys s "rec" "DSP system" valid_range =
(2 , 4) Ushort 2xs DSP A/B status (A=2, B=4)
tilt_flag s "rec" "Tilt angle flag of DSP status" valid_range =
(1 , 4) Ushort 2xs Tilt angle (DSP status : +20 = 1, 0 = 2, -20 = 4)
tilt s "rec" "Tilt angle for scan line" valid_range =
(-20 , 20) Real 4xs Tilt angle (degrees)
gain 8, s : [v]
4, s : [t] "bands", "rec" "Band gain settings" valid_range =
(0 , 3) : [v]
(0 , 2) : [t] Ushort 16xs : [v]
8xs : [t] Gain setting (O/N = 0, L/N = 1, O/H = 2, L/H = 3, G1 = 0, G2 = 1, G3 = 2)
SDE_sys s "rec" "SDE system" valid_range =
(1 , 2) Ushort 2xs SDE (Scan Drive Electronic) system (A = 1, B = 2)
inst_temp s, 4 "rec", "instt" "Instrument temperature telemetry" units = "degrees" Real 16xs Temperature of OCTS instrument (Optical processing cover temp., Thermal infrared detector temp.(detail), SRU temp.2, SRU temp.1)
bb_temp s, 5 "rec", "bbt" "Black body temperature telemetry" units = "degrees" Real 20xs Black body temperature. (standard black body temperature 1 - 5)
AMUX_v s "rec" "Analog multiplexer voltage" units = "voltages" Real 4xs Analog multiplexer voltage.
const_i s "rec" "Constant current calibration signal units = "voltages" Real 4xs Constant current calibration signal.
sc_att s, 3 "rec", "vec" "Spacecraft attitude roll, pitch, yaw" valid_range =
(-180 , 180) units = "degrees" Real 12xs Attitude angle. (roll, pitch, yaw)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
sc_time	s	"rec"	"Spacecraft counter time"		Ulong	4xs	Spacecraft time counter value.
off_time	s	"rec"	"Offset time of scan"		Ushort	2xs	Scan time offset value. (delta T)
opr_mode	s	"rec"	"Operation mode"	valid_range = (0 , 4)	Ushort	2xs	Observation mode. (DSP status) (observation; OBS = 0, lamp1; LAM = 1, lamp2; LAM = 2, solar; SOL = 3, electronic; ELE = 4)
DSP_sys	s	"rec"	"DSP system"	valid_range = (2 , 4)	Ushort	2xs	DSP A/B status (A=2, B=4)
tilt_flag	s	"rec"	"Tilt angle flag of DSP status"	valid_range = (1 , 4)	Ushort	2xs	Tilt angle (DSP status : +20 = 1, 0 = 2, -20 = 4)
tilt	s	"rec"	"Tilt angle for scan line"	valid_range = (-20 , 20)	Real	4xs	Tilt angle (degrees)
gain	8, s : [v] 4, s : [t]	"bands", "rec"	"Band gain settings"	valid_range = (0 , 3) : [v] (0 , 2) : [t]	Ushort	16xs : [v] 8xs : [t]	Gain setting (O/N = 0, L/N = 1, O/H = 2, L/H = 3, G1 = 0, G2 = 1, G3 = 2)
SDE_sys	s	"rec"	"SDE system"	valid_range = (1 , 2)	Ushort	2xs	SDE (Scan Drive Electronic) system (A = 1, B = 2)
inst_temp	s, 4	"rec", "instt"	"Instrument temperature telemetry"	units = "degrees"	Real	16xs	Temperature of OCTS instrument (Optical processing cover temp., Thermal infrared detector temp.(detail), SRU temp.2, SRU temp.1)
bb_temp	s, 5	"rec", "bbt"	"Black body temperature telemetry"	units = "degrees"	Real	20xs	Black body temperature. (standard black body temperature 1 - 5)
AMUX_v	s	"rec"	"Analog multiplexer voltage"	units = "voltages"	Real	4xs	Analog multiplexer voltage.
const_i	s	"rec"	"Constant current calibration signal	units = "voltages"	Real	4xs	Constant current calibration signal.
sc_att	s, 3	"rec", "vec"	"Spacecraft attitude roll, pitch, yaw"	valid_range = (-180 , 180) units = "degrees"	Real	12xs	Attitude angle. (roll, pitch, yaw)

Navigation

V group name (Tag = VG)	V group class
Navigation	Scan_Line_Data

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes )

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
orb_vec s, 3 "rec", "vec" "Orbit position vector at scan line time in ECR" valid_range =
(-7200 , 7200)
units = "kilometers" Real 12xs Orbit position vector in ECR X, Y, Z
orb_vel s, 3 "rec", "vec" "Orbit velocity at scan line time in ECR" valid_range =
(-8 , 8)
units = "kilometers second^-1" Real 12xs Spacecraft velocity vector in ECR frame.
sun_ref s, 3 "rec", "vec" "Reference Sun vector in ECR frame" Real 12xs Sun vector in the ECR frame.
att_ang s, 3 "rec", "vec" "Computed roll, pitch, yaw" valid_range =
(-180 , 180)
units = "degrees" Real 12xs Attitude angle. (roll, pitch, yaw)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
orb_vec	s, 3	"rec", "vec"	"Orbit position vector at scan line time in ECR"	valid_range = (-7200 , 7200) units = "kilometers"	Real	12xs	Orbit position vector in ECR X, Y, Z
orb_vel	s, 3	"rec", "vec"	"Orbit velocity at scan line time in ECR"	valid_range = (-8 , 8) units = "kilometers second^-1"	Real	12xs	Spacecraft velocity vector in ECR frame.
sun_ref	s, 3	"rec", "vec"	"Reference Sun vector in ECR frame"		Real	12xs	Sun vector in the ECR frame.
att_ang	s, 3	"rec", "vec"	"Computed roll, pitch, yaw"	valid_range = (-180 , 180) units = "degrees"	Real	12xs	Attitude angle. (roll, pitch, yaw)

Sensor Tilt

V group name (Tag = VG)	V group class
Sensor Tilt	Scan_Line_Data

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
tilt_seg 1 "tilts" "Tilt segment number" valid_range =
(1 , 5) Short 2 Tilt segment number.
1 : tilt angle = 0 degree (northern),
2 : tilt angle = -20 degrees,
3 : tilt angle = 20 degrees,
4 : tilt angle = 0 degree (southern),
5 : calibration data / nighttime observation data

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
tilt_seg	1	"tilts"	"Tilt segment number"	valid_range = (1 , 5)	Short	2	Tilt segment number. 1 : tilt angle = 0 degree (northern), 2 : tilt angle = -20 degrees, 3 : tilt angle = 20 degrees, 4 : tilt angle = 0 degree (southern), 5 : calibration data / nighttime observation data

Calibration

V group name (Tag = VG)	V group class
Calibration	Parameter

[v] : Visible and Near-infrared, [t] : Thermal-infrared

s : Number of scans ("Number of Scan Lines" of Data Quality in Global attributes)

k : Size of Radiance-temperature conversion table (dimension of which V group name is "temp")

n : Size of Radiometric correction table (number of break points) (value of which V group name is "rad_tbl_size")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
t_gain 4, 8, 10 "gains", "bands", "detectors" "Total gain" units = "W^-1 m^2 um sr" Real 1280 OCTS total gain at each gain setting. (only for Visible and near infrared)
t_offset 4, 8, 10 : [v]
3, 4, 10 : [t] "gains", "bands", "detectors" "Total offset" units = "digital counts" Real 1280 : [v]
480 : [t] OCTS total offset.
beta_d 8, 10 : [v]
4, 10 : [t] "bands", "detectors" "Temperature correction coefficients beta d" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bd
beta_p 8, 10 : [v]
4, 10 : [t] "bands", "detectors" "Temperature correction coefficients beta p" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bp
beta_am 8, 10 : [v]
4, 10 : [t] "bands", "detectors" "Temperature correction coefficients beta am" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bam
beta_ad 4, 8 : [v]
3, 4 : [t] "gains", "bands" "Temperature correction coefficients beta ad" units = "kelvin^-1" Real 128 : [v]
48 : [t] Temperature correction coefficient bad
beta_oam 8, 10 : [v]
4, 10 : [t] "bands", "detectors" "Temperature correction coefficients beta Oam" units = "kelvin^-1" Real 320 : [v]
160 : [t] Temperature correction coefficient bOam
beta_oad 4, 8 : [v]
3, 4 : [t] "gains", "bands" "Temperature correction coefficients beta Oad" units = "kelvin^-1" Real 128 : [v]
48 : [t] Temperature correction coefficient bOad
ref_temp 1 "reft" "Reference temperature for temperature correction coefficients" units = "celsius" Real 4 Standard temperature of temperature correction coefficient.
eta 8 : [v]
4 : [t] "bands" "Reflecting ratio correction coefficients" Real 32 : [v]
16 : [t] Reflecting ratio correction coefficient of reflecting mirror.
linearity_V 4, 10, 20 "bands", "detectors", "tdatas" "Output voltage of thermal infrared linearity table" units = "voltage" Real 3200 Output voltage of Thermal infrared non-linearity table. (only for Thermal infrared)
linearity_R 4, 10, 20 "bands", "detectors", "tdatas" "Input radiance of thermal infrared linearity table" units = "W^-1 m^2 um sr" Real 3200 Input radiance of Thermal infrared non-linearity table. (only for Thermal infrared)
temp k "rdatas" "Radiance-temperature conversion table temperature" units = "kelvin" Real 16xk Radiance-temperature conversion table temperature. (only for Thermal infrared)
rad 4, k "bands", "rdatas" "Radiance-temperature conversion table radiance" units = "W m^-2 um^-1 sr^-1" Real 16xk Radiance-temperature conversion table radiance. (only for Thermal infrared)
opt_vec 8, 10, 3 : [v]
4, 10, 3 : [t] "bands", "detectors", "vec" "View vector at optical unit" Real 960 : [v]
480 : [t] View line of each detector at optical unit. (only for observation mode)
opt_a 3, 3 "mat", "vec" "Alignment matrix of OPT coordinates" valid range = (-1 , 1) Real 36 Alignment of optical unit coordinate. (convert to satellite coordinate system by multiplying) (only for observation mode)
mirror_e 1 "err" "Scan mirror mounting error" units = "sec" Real 4 Mounting error of scan mirror. (asec) (only for observation mode)
scan_axis_e 1 "err" "Scan axis mounting error" units = "sec" Real 4 Mounting error of scan axis. (asec) (only for observation mode)
scan_m_a 3, 3 "mat", "vec" "Alignment matrix of SMA coordinates" Real 36 Alignment of scan mechanism module. (convert to satellite coordinate system by multiplying) (only for observation mode)
scan_ang 2222 "pixels" "Scan rotation angle" Real 8888 Scan rotation angle of each detector. (only for observation mode)
rad_tbl_size 1 "rads" "Radiometric correction table size" Short 2 Size of radiometric correction table. (number of break point) (= n)
rad_tbl 8, 10, n, 2 : [v]
4, 10, n, 2 : [t] "bands", "detectors", "bdatas", "pairs" "Radiometric correction table" Real 640xn : [v]
320xn : [t] Radiometric correction table. (pair of input and output)
rad_coef 8, s, 10, 4 : [v]
4, s, 10, 4 : [t] "bands", "rec", "detectors", "coefs" "Radiometric correction coefficients" Real 1280xs : [v]
640xs : [t] Radiometric correction coefficients. a, b, c, d

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
t_gain	4, 8, 10	"gains", "bands", "detectors"	"Total gain"	units = "W^-1 m^2 um sr"	Real	1280	OCTS total gain at each gain setting. (only for Visible and near infrared)
t_offset	4, 8, 10 : [v] 3, 4, 10 : [t]	"gains", "bands", "detectors"	"Total offset"	units = "digital counts"	Real	1280 : [v] 480 : [t]	OCTS total offset.
beta_d	8, 10 : [v] 4, 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta d"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bd
beta_p	8, 10 : [v] 4, 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta p"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bp
beta_am	8, 10 : [v] 4, 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta am"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bam
beta_ad	4, 8 : [v] 3, 4 : [t]	"gains", "bands"	"Temperature correction coefficients beta ad"	units = "kelvin^-1"	Real	128 : [v] 48 : [t]	Temperature correction coefficient bad
beta_oam	8, 10 : [v] 4, 10 : [t]	"bands", "detectors"	"Temperature correction coefficients beta Oam"	units = "kelvin^-1"	Real	320 : [v] 160 : [t]	Temperature correction coefficient bOam
beta_oad	4, 8 : [v] 3, 4 : [t]	"gains", "bands"	"Temperature correction coefficients beta Oad"	units = "kelvin^-1"	Real	128 : [v] 48 : [t]	Temperature correction coefficient bOad
ref_temp	1	"reft"	"Reference temperature for temperature correction coefficients"	units = "celsius"	Real	4	Standard temperature of temperature correction coefficient.
eta	8 : [v] 4 : [t]	"bands"	"Reflecting ratio correction coefficients"		Real	32 : [v] 16 : [t]	Reflecting ratio correction coefficient of reflecting mirror.
linearity_V	4, 10, 20	"bands", "detectors", "tdatas"	"Output voltage of thermal infrared linearity table"	units = "voltage"	Real	3200	Output voltage of Thermal infrared non-linearity table. (only for Thermal infrared)
linearity_R	4, 10, 20	"bands", "detectors", "tdatas"	"Input radiance of thermal infrared linearity table"	units = "W^-1 m^2 um sr"	Real	3200	Input radiance of Thermal infrared non-linearity table. (only for Thermal infrared)
temp	k	"rdatas"	"Radiance-temperature conversion table temperature"	units = "kelvin"	Real	16xk	Radiance-temperature conversion table temperature. (only for Thermal infrared)
rad	4, k	"bands", "rdatas"	"Radiance-temperature conversion table radiance"	units = "W m^-2 um^-1 sr^-1"	Real	16xk	Radiance-temperature conversion table radiance. (only for Thermal infrared)
opt_vec	8, 10, 3 : [v] 4, 10, 3 : [t]	"bands", "detectors", "vec"	"View vector at optical unit"		Real	960 : [v] 480 : [t]	View line of each detector at optical unit. (only for observation mode)
opt_a	3, 3	"mat", "vec"	"Alignment matrix of OPT coordinates"	valid range = (-1 , 1)	Real	36	Alignment of optical unit coordinate. (convert to satellite coordinate system by multiplying) (only for observation mode)
mirror_e	1	"err"	"Scan mirror mounting error"	units = "sec"	Real	4	Mounting error of scan mirror. (asec) (only for observation mode)
scan_axis_e	1	"err"	"Scan axis mounting error"	units = "sec"	Real	4	Mounting error of scan axis. (asec) (only for observation mode)
scan_m_a	3, 3	"mat", "vec"	"Alignment matrix of SMA coordinates"		Real	36	Alignment of scan mechanism module. (convert to satellite coordinate system by multiplying) (only for observation mode)
scan_ang	2222	"pixels"	"Scan rotation angle"		Real	8888	Scan rotation angle of each detector. (only for observation mode)
rad_tbl_size	1	"rads"	"Radiometric correction table size"		Short	2	Size of radiometric correction table. (number of break point) (= n)
rad_tbl	8, 10, n, 2 : [v] 4, 10, n, 2 : [t]	"bands", "detectors", "bdatas", "pairs"	"Radiometric correction table"		Real	640xn : [v] 320xn : [t]	Radiometric correction table. (pair of input and output)
rad_coef	8, s, 10, 4 : [v] 4, s, 10, 4 : [t]	"bands", "rec", "detectors", "coefs"	"Radiometric correction coefficients"		Real	1280xs : [v] 640xs : [t]	Radiometric correction coefficients. a, b, c, d

Spacecraft Time Error

V group name (Tag = VG)	V group class
Spacecraft Time Error	Ephemeris_Data

n : Number of time error information sets (value of which V group name is "num_inf")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_inf 1 "ninf" "Number of time difference data" Short 2 Number of time error collection information sets (= n)
obit_count n "ndatas" "Orbit accumulation number" Long 4xn Integrated orbit number used in calculation.
start_time n "ndatas22" "Start time of time difference data" Ch 22xn Valid period of time error collection information (start) "YYYYMMDD hh:mm:ss.ttt"
end_time n "ndatas22" "End time of time difference data" Ch 22xn Valid period of time error collection information (end) "YYYYMMDD hh:mm:ss.ttt"
period_count n "ndatas14" "Counter period of SC clock" Ch 14xn Period of spacecraft counter "NN.NNNNNNNNNN"
ref_count n "ndatas12" "Reference counter of SC clock" Ch 12xn Reference spacecraft time counter value. "NNNNNNNNNNN"
ref_time n "ndatas22" "Reference time (UT) of ground" Ch 22xn Reference time. (UTC) "YYYYMMDD hh:mm:ss.ttt"

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_inf	1	"ninf"	"Number of time difference data"	Short	2	Number of time error collection information sets (= n)
obit_count	n	"ndatas"	"Orbit accumulation number"	Long	4xn	Integrated orbit number used in calculation.
start_time	n	"ndatas22"	"Start time of time difference data"	Ch	22xn	Valid period of time error collection information (start) "YYYYMMDD hh:mm:ss.ttt"
end_time	n	"ndatas22"	"End time of time difference data"	Ch	22xn	Valid period of time error collection information (end) "YYYYMMDD hh:mm:ss.ttt"
period_count	n	"ndatas14"	"Counter period of SC clock"	Ch	14xn	Period of spacecraft counter "NN.NNNNNNNNNN"
ref_count	n	"ndatas12"	"Reference counter of SC clock"	Ch	12xn	Reference spacecraft time counter value. "NNNNNNNNNNN"
ref_time	n	"ndatas22"	"Reference time (UT) of ground"	Ch	22xn	Reference time. (UTC) "YYYYMMDD hh:mm:ss.ttt"

Orbit Data

V group name (Tag = VG)	V group class
Orbit Data	Ephemeris_Data

m : Number of orbit records (value of which V group name is "num_rec")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_rec 1 "nrec" "Number of records" Long 4 Number of orbit data records. (= m)
precision m "odatas" "Orbit data precision" Short 2xm Precision of orbit data. (preliminary / decision)
utc_tai m "odatas" "UTC-TAI" units = "seconds" Long 4xm UTC - TAI
ut1r_tai m "odatas" "UT1R-TAI" units = "seconds" Double 8xm UT1R - TAI
polar_motion m, 2 "odatas", "pairs" "Polar motion parameters" Double 16xm Polar motion data. Xpm and Ypm (asec)
start_date m "odatas22" "Orbit data start date" Ch 22xm Start time of orbit data. "YYYYMMDD hh:mm:ss.000"
interval m "odatas" "Data interval time" units = "seconds" Double 8xm Data interval.
num_points m "odatas" "Number of data points" Long 4xm Number of data points. (= 1440)
sc_pos m, 1440, 3 "odatas", "points", "vec" "Spacecraft position" valid range = (-7200 , 7200)
units = "kilometers" Double 34560xm Spacecraft position vector in ECI frame.
sc_vel m, 1440, 3 "odatas", "points", "vec" "Spacecraft velocity" valid range = (-8 , 8)
units = "kilometers second^-1" Double 34560xm Spacecraft velocity vector in ECI frame.

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	VH : valid_range / units (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_rec	1	"nrec"	"Number of records"		Long	4	Number of orbit data records. (= m)
precision	m	"odatas"	"Orbit data precision"		Short	2xm	Precision of orbit data. (preliminary / decision)
utc_tai	m	"odatas"	"UTC-TAI"	units = "seconds"	Long	4xm	UTC - TAI
ut1r_tai	m	"odatas"	"UT1R-TAI"	units = "seconds"	Double	8xm	UT1R - TAI
polar_motion	m, 2	"odatas", "pairs"	"Polar motion parameters"		Double	16xm	Polar motion data. Xpm and Ypm (asec)
start_date	m	"odatas22"	"Orbit data start date"		Ch	22xm	Start time of orbit data. "YYYYMMDD hh:mm:ss.000"
interval	m	"odatas"	"Data interval time"	units = "seconds"	Double	8xm	Data interval.
num_points	m	"odatas"	"Number of data points"		Long	4xm	Number of data points. (= 1440)
sc_pos	m, 1440, 3	"odatas", "points", "vec"	"Spacecraft position"	valid range = (-7200 , 7200) units = "kilometers"	Double	34560xm	Spacecraft position vector in ECI frame.
sc_vel	m, 1440, 3	"odatas", "points", "vec"	"Spacecraft velocity"	valid range = (-8 , 8) units = "kilometers second^-1"	Double	34560xm	Spacecraft velocity vector in ECI frame.

Subsampling Table

Only for GAC. Not including for RTC and LAC

V group name (Tag = VG) V group class
Subsampling Table Sub_Sampling_Data

V group name (Tag = VG)	V group class
Subsampling Table	Sub_Sampling_Data

n : Number of subsampling table (value of which V group name is "num_tables")

V group name
(Tag = VG) Dimension
(Tag = SDD) Dimension name
(Tag = VG) VH : long_name
(Tag = VS) VH : valid_range / units
(Tag = VS) Type Size
(bytes) Contents
(Tag = SD)
num_tables 1 "ntbl" "Number of subsampling tables" Short 2 Number of subsampling tables (=n) (only for GAC)
start_line n "sline" "Start scan line of table" Short 2xn Start scan line number of subsampling tables (n) (only for GAC)
samp_table n, 3, 8, 2, p, 2 : [v]
n, 3, 4, 2, p, 2 : [t] "sets", "ntilt", "bands", "sdet", "nsamp", "pairs" "Subsampling table" Short 192xpxn : [v]
96xpxn : [t] Subsampling tables (only for GAC)

V group name (Tag = VG)	Dimension (Tag = SDD)	Dimension name (Tag = VG)	VH : long_name (Tag = VS)	Type	Size (bytes)	Contents (Tag = SD)
num_tables	1	"ntbl"	"Number of subsampling tables"	Short	2	Number of subsampling tables (=n) (only for GAC)
start_line	n	"sline"	"Start scan line of table"	Short	2xn	Start scan line number of subsampling tables (n) (only for GAC)
samp_table	n, 3, 8, 2, p, 2 : [v] n, 3, 4, 2, p, 2 : [t]	"sets", "ntilt", "bands", "sdet", "nsamp", "pairs"	"Subsampling table"	Short	192xpxn : [v] 96xpxn : [t]	Subsampling tables (only for GAC)

[TOC] [INTRO] [LEVEL 1B] [LEVEL 2] [LEVEL 3 MAP] [LEVEL 3 BINNED] [LEVEL 3 BINNED MAP]
[ADEOS HOME]