天基稀疏孔徑雷達在波束掃描干涉模式下的GMTI研究
Ground Moving Target Indication of Space Based Sparse Array Scanned Pattern Interferometric Radar
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摘要: 在理論上天基稀疏孔徑波束掃描干涉雷達(SPIR)的地面動目標檢測方法僅適用于回波數(shù)據(jù)無方位模糊時的情形，但該文通過對點散布函數(shù)矩陣的進一步分解后發(fā)現(xiàn)，SPIR在方位模糊時仍會有一定的空時重構效果，且其動目標檢測性能會比常規(guī)空時級聯(lián)處理的性能好。Abstract: In theory, the Ground Moving Target Indication (GMTI) method of space based sparse array Scanned Pattern Interferometric Radar (SPIR) only works when there are no ambiguities in azimuth. By decomposing the Point Spread Function (PSF) matrix, It is proposed that SPIR can work even there are a few ambiguities in azimuth, i.e. the ground scene can be recovered to some degree. Also through simulation experiments, SPIR is found to get much better GMTI performance than that of general space-time cascade processing.
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