SAR原始回波信號(hào)生成算法的性能比較研究
Performance Comparison of Algorithms for SAR Raw Signal Generation
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摘要: 該文介紹了距離時(shí)域脈沖相干法、距離頻域脈沖相干法和二維頻域快速傅氏變換法3種SAR原始回波信號(hào)生成算法的基本原理和計(jì)算步驟,重點(diǎn)從誤差分析、時(shí)間估計(jì)以及空間估計(jì)等3個(gè)方面對(duì)這3種算法進(jìn)行了深入量化的比較研究,并利用X波段SAR系統(tǒng)參數(shù)實(shí)現(xiàn)了3種算法的仿真實(shí)驗(yàn)。理論分析及實(shí)驗(yàn)結(jié)果均表明,第3種算法不僅算法描述簡(jiǎn)明高效,可實(shí)現(xiàn)性強(qiáng),而且所得的結(jié)果數(shù)據(jù)精度也較高,是一種較為實(shí)用的SAR原始回波信號(hào)生成算法。Abstract: The fundaments and computation procedures of three algorithms for SAR raw signal generation-RTPC, RFPC and 2DFFTare introduced. A quantitive comparison of these algorithms is emphatically studied on the aspects of error analysis, time and space evaluation. The simulation tests of these algorithms have been implemented using the system parameters of an X-band SAR. Both the theoretical analyses and the emulational results indicate that the third one is more practicable basing on its concise and efficient description and readability, as well as high accuracy of its result.
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