星载SAR多普勒质心估记的新方法幅度相关法
A NEW METHOD TO ESTIMATE DOPPLER CENTROID FOR SPACEBORNE SAR-AMPLITUDE CORRELATION METHOD
-
摘要: 本文分析了星载合成孔径雷达(SAR)多普勒质心与距离走动之间的线性关系,提出了一种估计多普勒质心的新方法幅度相关法。利用星载SEASAT-A SAR原始数据,讨论了该方法与目前最常用的杂波锁定法的差别。结果表明,采用幅度相关法具有运算量小和在准均匀或非均匀场景下估计精度高的优越性。Abstract: The linear relationship between Doppler centroid and range walki, in spaceborne SAR data is analysed,and a new method to estimate Doppler centroir is proposed, which is called amplitude correlation method. Compared with Li s(1985) clutterlock method that is widely used now, the new method has much less compv tation burden and is able to give higher estimation accuracy for a quasi-homogeneous or a non-homogeneous scene. This is clearly verified by the experimental results of estimating Doppler centroid for S...
-
Li F K, Held D N, Wu J, Curlander C. IEEE Trans. on GE, 1985. GE-23(1): 47-56.[2]Wu C, Liu K Y, Jin M. IEEE Trans. on AES, 1982, AES-18(5): 563-574.[3]Munson D C, Visentin R L. IEEE Trans. on ASSP, 1989, ASSP-37(12): 2131-2147.[4]Wehner D. High Resolution Radar. Norwood, NIA: Artech House. 1987, Chap. 6.[5]Madsen S N. IEEE Trans. on AES, 1989, AES-25(2): 134-140.[6]Jin M Y. Wu C. IEEE Trans. on GE, 1984, GE-22(11): 592-597. -
计量
- 文章访问数: 2143
- HTML全文浏览量: 129
- PDF下载量: 463
- 被引次数: 0
下载:
