Signal Processing for Digital Beamforming FMCW SAR

Table 1

System parameters.

Parameter	Multi-Channel System	Single Channel System
RF center frequency	15 GHz	15 GHz
Band Width	1.5 GHz	1.5 GHz
Operational Altitude	5000 m	5000 m
Operational Velocity	70 m/s	70 m/s
Swath Width	7 km	7 km
Resolution	0.1 m × 0.1 m	0.1 m × 0.1 m
Radar Losses	2 dB	2 dB
Incidence Angle	5–70°	5–70°
Number of Receive Apertures	2	1
Transmitted Power	5 W	5 W
Transmit Antenna Gain	19.5 dB	19.5 dB
Receive Antenna Gain	19.5 dB	19.5 dB
PRF	350 Hz	700 Hz
Range Processing Gain	66.3 dB	63.3 dB
Sampling Frequency	16 MHz	32 MHz