A kind of interference processing technology of airborne non-vertical dual-antenna interferometric SAR system
A dual-antenna, non-vertical technology, used in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problems of backwardness, no spaceborne interferometric SAR system, etc., to achieve the effect of promoting development
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[0049] The present invention will be further described below in conjunction with the accompanying drawings.
[0050] For airborne dual-antenna interferometric SAR, the coarse registration accuracy can be achieved after simple translation of the main and auxiliary images. image 3 (a) is the coherence coefficient map of the main and auxiliary images after rough registration. From the figure, we can see that along the azimuth direction, there are many areas of low coherence. These areas correspond to the moment when the parameters in the aircraft inertial navigation data change suddenly.
[0051] After rough registration, the overall offset of the main and auxiliary images is about 1 pixel, and the local area (mainly at different azimuth times) has a large registration offset due to aircraft shaking. Therefore, at this time, it is necessary to accurately estimate the registration parameters in the local area. According to the local fine registration algorithm, select 16*16 gr...
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