Performance Comparison of Reflector- and Planar-Antenna Based Digital Beam-Forming SAR

Table 1

Requirement on performance parameters.

Parameter		Value
Frequency	C-Band	5.4 GHz
Swath width		≥120 km
Global coverage		Within one repeat cycle
Resolution (range, azimuth)	𝛿𝑟𝑔, 𝛿𝑎𝑧	8×8 m
Ambiguity-to-signal ratio	RASR, AASR	−20 dB
Noise-equivalent sigma zero	NESZ	−25 dB
SCORE loss @1.5 km	SPL	≤1 dB