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Journal of Electronics (China)

, Volume 11, Issue 2, pp 170–175 | Cite as

A new method of doppler centroid estimation for spaceborne SAR—Amplitude correlation method

  • Liu Guoqing
  • Huang Shunji
Research Notes
  • 39 Downloads

Abstract

The linear relationship between Doppler centroid and range walking in spaceborne SAR data is analyzed, and a new method to estimate Doppler centroid is proposed, which is so called amplitude correlation method. Compared with clutter-lock method which is widely used now, the new method has much less computation burden and is able to give higher estimation accuracy for a quasi-homogeneous scene or a non-homogeneous scene. This is clearly verifled by the experimental results of estimating Doppler centroid for SEaSAT-A raw data.

Key words

Spaceborne synthetic aperture radar Range walking Doppler centroid estimation Amplitude correlation 

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Copyright information

© Science Press 1994

Authors and Affiliations

  • Liu Guoqing
    • 1
  • Huang Shunji
    • 1
  1. 1.University of Electronic Science & Technology of ChinaChengdu

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