| Pi-SAR L-band Characteristics |
| Center frequency |
1.27149 GHz |
| Band width |
<= 50 MHz |
| Polarization |
mode 1 HH or VV
mode 2 HH, HV, VH, VV |
| Phase accuracy |
<= 5 deg. (after correction) |
| Off nadir angle |
40 deg. |
| Imaging swath |
>= 16 km at 12 km of cruising altitude |
| Resolution |
Range direction |
3, 5, 10, 20 m (at 60 deg. of incidence angle) |
| Azimuth direction |
3 m at three looks processing |
| Noise equivalent sigma zero |
- 30 dB at SNR = 10 dB |
| S/A |
>= 30 dB at off nadir of 20 - 60 deg. |
| Calibration accuracy |
0.6 dB |
| Pulse duration |
10 micro sec. (nominal) |
| PRF |
variable and <= 1 KHz |
| Data |
ADC 6bit |
8 bit / I and Q channel |
| Data rate |
256 Mbps |
| Power |
<= 3.5 KW |
| Total weight |
450 kg |
| Antenna |
Gain |
>= 18 dB |
| Beam width |
38 +- 4 degree in elevation
9.8 +- 1.0 degree in azimuth |
| Sidelobe |
< -20 dB in elevation
< -25 dB in azimuth |
| Cross pol. |
< -25 dB |
| Dimension |
1.7 m x 0.6 m |
| Transmission receiver subsystem transmission pulse |
Duration |
10 micro sec +- 0.1 micro sec. |
| Chirp band width |
50, 45, 22.5, 11.3 MHz |
| Peak power |
3 KW |
| Noise figure |
< 1.5 dB |
| Signal processor |
Sampling frequency |
61.7 MHz / 30.9 MHz |
| Data recorder |
Media |
D-1 cassette (L size) |
| Data rate |
max. 32 MByte/sec. |
| Data capacity |
96 GByte |
Pi-SARの概要
