雙通道沿跡干涉SAR地面動目標檢測
Dual Channels Along -Track Interferometry SAR Ground Moving Target Detection
-
摘要: 該文深入研究了雙通道沿跡干涉(Along-Track Interferometry, ATI )SAR的機理，給出了運用該機理在靜止目標去線性調(diào)頻后的頻域內(nèi)進行動目標檢測的方法。文中詳細描述了該方法的檢測過程，分析了雜波、噪聲以及目標速度對檢測性能的影響, 最后給出了計算機仿真結(jié)果。分析及仿真結(jié)果表明， 與同常規(guī)方法相比，該方法對可檢測運動目標信雜比的要求降低，對于淹沒在主瓣雜波譜內(nèi)的動目標以及在主瓣雜波譜外的動目標能夠同時檢測；同時，在頻域檢測計算量下降。
-
關(guān)鍵詞:
- 沿跡干涉(ATI);動目標檢測;雙通道;檢測函數(shù)
Abstract: This paper provides a ground moving target detection algorithm in Range-Doppler domain with Along-Track Interferometry(ATI) for dual channels SAR after studying ATI theory deeply. It describes the procedure of detection in detail and analyzes the effect of Signal-Noise-Ratio(SNR), Signal-Clutter-Ratio(SCR) and moving targets velocity. Finally, some typical computer simulation results are presented. Comparing with routine method, the method in the paper requires lower SCR of moving target, and can detects targets both in and out of the clutter main lobe frequency. In addition, it neednt compress echoes in azimuth, so the computation decreases. -
Carnade Richard E. Dual baseline and frequency along-track Interferometry. IGARSS, Houston, America, 1992: 1585-1588.[2]Gill Eberhard. A formation flying concept for an along-track interferometry SAR mission. DLR/GSOC TN. 2003.[3]Shen Chiu. Computer simulation of Canadas RADARSAT2 GMTI. RTO SET Symposium. Greece, Held on the Island of Sa-[4]mos. 2000.[5]鄭明潔. 合成孔徑雷達動目標檢測和成像研究. [博士論文], 北京：中國科學(xué)院電子學(xué)研究所，2003.6.[6]Gierull C H, Sikaneta Ishuwa C. Raw data based two-aperture SAR ground moving target indication. IGARSS. Toulouse, France, 2003.7: 1032-1034.[7]胡廣書. 數(shù)字信號處理－理論、算法與實現(xiàn). 北京: 清華大學(xué)出版社, 2002, 第3.8節(jié).[8]Thompson Alan A, Livingstone Charles E. Moving Target Perfor- mance for RADARSAT-2. IGARSS, Honolulu, USA, 2000: 2599-2601. -
計量
- 文章訪問數(shù): 2129
- HTML全文瀏覽量: 88
- PDF下載量: 710
- 被引次數(shù): 0
下載:
