分布式衛(wèi)星SAR的波束形成和多視處理成像
The imaging of distributed satellite SAR system using beamforming and multi look
-
摘要: 針對分布式衛(wèi)星SAR的正側(cè)視工作模式,該文建立了雷達(dá)信號的回波模型,提出了分布式衛(wèi)星SAR中單個星載SAR的成像算法和利用波束形成和多視處理合成分布式衛(wèi)星SAR圖像的算法。理論分析和仿真結(jié)果表明:該算法能在不改變圖像分辨力的情況下提高圖像的信噪比和抑制相干斑,改善圖像質(zhì)量。
-
關(guān)鍵詞:
- 分布式衛(wèi)星SAR; 正側(cè)視; 波束形成; 多視處理; 相干斑
Abstract: Based on the side-looking mode SAR of distributed satellites SAR system. This paper gives the mathematical model of SAR echo signal, and proposes a imaging algorithm of the single satellite SAR of distributed satellite SAR and imaging algorithm of distributed satellite SAR system by beamforming and multilook. The results of theory analysis and simulation show that the algorithm can enhance SNR and suppress the speckle noise of resulted image without changing the resolution of SAR image, improve images quality. -
J. Stile.[J].N. Goodman, SiChung Lin, Performance and processing of SAR satellite clusters, Proc.IGARSS2000, Honolulu, Hi, USA.2000,:-[2]劉永坦,雷達(dá)成像技術(shù),哈爾濱,哈爾濱工業(yè)大學(xué)出版社,1999,36-46. -
計量
- 文章訪問數(shù): 2467
- HTML全文瀏覽量: 114
- PDF下載量: 527
- 被引次數(shù): 0
下載:
