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
-
摘要: 該文研究了分布式衛(wèi)星干涉合成孔徑雷達(dá)(InSAR)系統(tǒng)中雙基斜視雷達(dá)的CS成像算法，給出了算法的具體實(shí)現(xiàn)過程，并在算法實(shí)現(xiàn)中對(duì)分布式衛(wèi)星InSAR系統(tǒng)的基線不穩(wěn)定進(jìn)行了補(bǔ)償，消除了基線不穩(wěn)定對(duì)SAR圖像和干涉測(cè)量的影響。通過模擬仿真，驗(yàn)證了雙基斜視CS算法的保相性以及基線不穩(wěn)定補(bǔ)償方法的有效性。
-
關(guān)鍵詞:
- 分布式衛(wèi)星; 干涉合成孔徑雷達(dá)(InSAR); 成像算法
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. -
Raney R K, Runge H, Bamler R, et al.. Precision SAR processing using chirp scaling[J].IEEE Trans. on Geosci. Remote Sensing.1994, 32(4):786-799[2]Loffeld O, Nies H, Perters V, et al.. Models and useful relations for bistatic SAR processing[J].IEEE Trans. on Geosci. Remote Sensing.2004, 42(10):2031-2038[3]Massonnet D. Capabilities and limitations of the interferometric cartwheel[J].IEEE Trans. on Geosci. Remote Sensing.2001, 39(3):506-520[4]林來興. 微小衛(wèi)星編隊(duì)飛行組成虛擬衛(wèi)星研究. 微小衛(wèi)星編隊(duì)飛行及應(yīng)用論文集. 北京: 國家高技術(shù)航天領(lǐng)域?qū)＜椅瘑T會(huì)微小衛(wèi)星技術(shù)組, 2000: 1-35.[5]魏鐘. 合成孔徑雷達(dá)衛(wèi)星. 北京: 科學(xué)出版社, 2001: 160-172. -
計(jì)量
- 文章訪問數(shù): 2463
- HTML全文瀏覽量: 84
- PDF下載量: 622
- 被引次數(shù): 0
下載:
