Virtual Antenna Array Analysis for MIMO Synthetic Aperture Radars

Table 1

Performance parameters of an example MIMO SAR system.

Parameters	Variables	Values
Mean transmit power	𝑃𝑎𝑣𝑔	10 W
Number of transmitting antennas	𝑀	3
Number of receiving antennas	𝑁	3
Transmit/receive antenna length	𝐿𝑎𝑠	0.9 m
Platform altitude	ℎ𝑠	30 km
Platform velocity	𝑣𝑠	500 m/s
Incidence angle	𝜂	30^∘
Antenna width	𝐻𝑎	0.1 m
Swath width	𝑊𝑠	12 km
Radiometric resolution	𝑁𝐸𝑆𝑍	−51.16 dB
Incidence angle	𝜂	45^∘
Antenna width	𝐻𝑎	0.1 m
Swath width	𝑊𝑠	18 km
Radiometric resolution	𝑁𝐸𝑆𝑍	−48.52 dB
Incidence angle	𝜂	45^∘
Antenna width	𝐻𝑎	0.2 m
Swath width	𝑊𝑠	9 km
Radiometric resolution	𝑁𝐸𝑆𝑍	−54.54 dB