CPC G01S 13/9027 (2019.05) [B60W 50/06 (2013.01); G06T 5/20 (2013.01); G06T 5/70 (2024.01); B60W 60/0015 (2020.02); B60W 2420/408 (2024.01); G06T 2207/10044 (2013.01); G06T 2207/30252 (2013.01)] | 17 Claims |
1. A method of de-aliased imaging for a synthetic aperture radar, the method comprising:
identifying, based on multiple frames of signals received by a plurality of receive channels of a radar system, range-Doppler detections corresponding to each receive channel of the plurality of receive channels;
applying a back-projection algorithm to the range-Doppler detections identified for each of the receive channels to determine a set of pixels for each respective receive channel, each pixel in each of the sets of pixels indicative of the range-Doppler detections identified at a position corresponding to that pixel;
deriving, from each set of pixels, initial images related to each receive channel;
applying a de-aliasing filter to the initial images derived from the back-projection algorithm to produce a refined image; and
outputting, to a system for controlling a vehicle, the refined image produced by the de-aliasing filter applied to the initial images derived from the back-projection algorithm.
|