Satellite-borne three-channel SAR-GMTI self-adaptive clutter suppression method
An adaptive clutter, three-channel technology, applied in the field of radar, can solve the problems of ignoring the data correlation of adjacent Doppler cells, limiting the clutter suppression performance, and limiting the detection ability.
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[0061] Reference figure 1 , Explain that the satellite-borne three-channel SAR-GMTI adaptive clutter suppression method of the present invention is used to suppress the ground clutter received by the three-channel SAR-GMTI system. The specific steps are as follows:
[0062] Step 1. Establish the target original echo signal model, obtain the target echo signal in the range frequency domain according to the original target echo signal; construct the range frequency domain range compression filter according to the target echo signal in the range frequency domain; According to the range frequency domain target echo The signal and range frequency domain range compression filter obtains the range Doppler domain target echo signal after range compression.
[0063] Observation geometry of the oblique-range plane three-channel SAR-GMTI system figure 2 Shown: the equivalent phase center distance between channel 1 and channel 2 is d, the equivalent phase center distance between channel 2 and ...
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