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left.gifKind of Earth Observation Satellite
spacer.gifsub_directry_end.gifALOS
left_on.gifKind of sensor
spacer.gifsub_directry.gifALOS-PRISM
spacer.gifsub_directry.gifALOS-AVNIR2
spacer.gifsub_directry_end.gifALOS-PALSAR
left.gifFirst Image

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PALSAR Image
PALSAR Scanning Image
PALSAR Scanning Image

Overview

PALSAR is an active microwave sensor for cloud-free and day-and-night land observation and provides higher performance than JERS-1's SAR.This sensor has a beam steer able in elevation and the ScanSAR mode, which allows us to obtain a wider swath than conventional SARs. The development of PALSAR is a joint project between JAXA and the Japan Resources Observation System Organization(JAROS).


Image data acquired by the PALSAR onboard the "Daichi"(Feb.17 2006)



Development of PALSAR

Development of PALSAR The left image shows the deployment test of the antenna. The antenna consists of 4 flat boards, 3.1m by 2.2m each, and they are folded at launch. The antenna will be deployed approximately 2 days after the launch of ALOS. Since it is designed to deploy under weightless conditions, the test was conducted by hanging the whole antenna so as not to be affected by gravity.



Characteristics

Observation mode Fine Resolution ScanSAR
Frequency L-band(1.27GHz)
Polarization HH,VV,HH&HV,VV&VH HH,VV
Spatial Resolution 10m 100m
Swath WIDTH 70km 250-350km
Off-nadir Angle 10-51deg.
NEs0 About -23dB




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