Multichannel synthetic aperture radar system channel equalization method based on sample selection

The invention discloses a multichannel synthetic aperture radar system channel equalization method based on sample selection. The method comprises the step 1: iteration initialization; the step 2: distance frequency domain frequency domain calibration; the step 3: doppler domain calibration; and the step 4: iteration termination condition determination, wherein if the iteration termination condition is satisfied, the process comes to an end, and if not, returning to the step 2. The multichannel synthetic aperture radar system channel equalization method based on sample selection effectively improves the performance for adaptive two dimension calibration. By adding a sample selection strategy before training an adaptive weight, the multichannel synthetic aperture radar system channel equalization method based on sample selection can effectively avoid the problem that in a traditional method, the low clutter noise ratio sample point in a sidelobe zone and a noise zone causes reduction of performance. The multic