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星载合成孔径雷达TOPS模式研究 被引量:4

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摘要 TOPS(循序扫描地形观测)模式作为一种新的星载合成孔径雷达(SAR)工作模式,通过天线波束指向的改变避免了扫描工作模式SAR图像的扇贝效应.本文给出了一种广义的SAR成像模型,适用于TOPS模式和其他工作模式,以模式因子描述天线的转角率、多普勒中心率、照射时间范围和方位分辨率.分析了TOPS模式带宽扩展和间隔缩放的信号特点及其处理方法,提出了一种以Chirp-z变换算法为基础,引入去转动函数解决输出长度问题的TOPS成像处理流程,最后通过点目标仿真验证了算法的有效性.
出处 《中国科学:信息科学》 CSCD 2010年第3期468-480,共13页 Scientia Sinica(Informationis)
基金 国家重点基础研究发展计划(批准号:2009CB724003 2010CB731902) 国家自然科学基金(批准号:60890070 60901056)资助项目
关键词 SAR 采集模式 TOPS
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参考文献16

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同被引文献19

  • 1李燕平,邢孟道,保铮.宽带机械扫描雷达的DBS成像和动目标检测[J].西安电子科技大学学报,2006,33(1):116-120. 被引量:13
  • 2Francesco D Z, Andrea M G. TOPSAR: terrain observation by progressive scans[J]. IEEE Trans. on Geoscience Remote Sens- ing, 2006, 44(9): 2352-2360.
  • 3Adriano M, Josef M, Pau P, et al. TOPS imaging with Terra- SAR-X: mode design and performance analysis [J]. IEEE Trans. on Geoscience Remote Sensing, 2010, 48(2) : 759 - 769.
  • 4Evert A, Malcolm D, Nicolas F, et al. Sentinel-I ESA's new European radar observatory[C]//Proc. of the EUSAR 2008, 2008:179 - 182.
  • 5Pau P, Rolf S, Josef M, et al. Processing of sliding spotlight and TOPS SAR data using baseband azimuth scaling[J]. IEEE Trans. on Geoscience Remote Sensing, 2010, 48(2) : 770 - 780.
  • 6Geir E, Yngvar L. Efficient full aperture processing of TOPS mode data using the moving band chirp Z-transform[J]. IEEE Trans. on Geoscience Remote Sensing, 2011, 49(10): 3688- 3693.
  • 7Sun G C, Xing M D, Wang Y, et al. Sliding Spotlight and TOPS SAR data processing without subaperture[J]. IEEE Geo- science Remote Sensing Letters, 2011, 8(6) : 1036 - 1040.
  • 8Xu W, Huang P P,Deng Y K, et al. An efficient approach with scaling factors for TOPS-Mode SAR data focusing[J]. IEEE Geoscience Remote Sensing Letters, 2011, 8(5) : 929 - 933.
  • 9Riccardo L, Manlio T, Eugenio S, et al. Spotlight SAR data focu- sing based on a two-step processing approach[J]. IEEE Trans. on Geoscience Remote Sensing, 2001, 39(9) : 1993 - 2004.
  • 10Raney R K, Runge H, Bamler R, et al. Precision SAR pro- cessing using chirp scaling[J]. IEEE Trans. on Geoscience Re- mote Sensing, 1994, 32(4) :786 - 799.

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