分布式衛(wèi)星InSAR系統(tǒng)的成像算法研究
The Study of Imaging Algorithm of Distributed Satellites InSAR System
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摘要: 該文研究了分布式衛(wèi)星干涉合成孔徑雷達(InSAR)系統(tǒng)中雙基斜視雷達的CS成像算法，給出了算法的具體實現(xiàn)過程，并在算法實現(xiàn)中對分布式衛(wèi)星InSAR系統(tǒng)的基線不穩(wěn)定進行了補償，消除了基線不穩(wěn)定對SAR圖像和干涉測量的影響。通過模擬仿真，驗證了雙基斜視CS算法的保相性以及基線不穩(wěn)定補償方法的有效性。Abstract: Chirp Scaling (CS) imaging algorithm is derived and implemented in this paper, which is adapted to bistatic and squinted radar in distributed satellites Interferometric Synthetic Aperture Radar (InSAR) system. Considering the characteristic of baseline instability in this system, an effective method is proposed to eliminate the effect of baseline instability on SAR image and interferometric measure. The simulation results validate the property of phase preserving of bistatic and squinted CS algorithm and the effectiveness of compensated method of baseline instability.
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