An Efficient Signal Reconstruction Algorithm for Stepped Frequency MIMO-SAR in the Spotlight and Sliding Spotlight Modes
Keyword(s):
Low Cost
◽
Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) using stepped frequency (SF) waveforms enables a high two-dimensional (2D) resolution with wider imaging swath at relatively low cost. However, only the stripmap mode has been discussed for SF MIMO-SAR. This paper presents an efficient algorithm to reconstruct the signal of SF MIMO-SAR in the spotlight and sliding spotlight modes, which includes Doppler ambiguity resolving algorithm based on subaperture division and an improved frequency-domain bandwidth synthesis (FBS) method. Both simulated and constructed data are used to validate the effectiveness of the proposed algorithm.
2015 ◽
Vol 9
(1)
◽
pp. 095090
◽
2016 ◽
Vol 9
(3)
◽
pp. 573-580
◽
2020 ◽
Vol 1607
◽
pp. 012059
2014 ◽
Vol 556-562
◽
pp. 2797-2801