NDLI: Maximum-likelihood-based Doppler centroid estimation algorithm for MC-HRWS SAR system

Content Provider	IET Digital Library
Author	Li, Jianbing Li, Xiaoping Lin, Mingfu Shi, Jungang Zhang, Shuangxi
Abstract	For the multi-channel in azimuth high-resolution and wide-swath (MC-HRWS) synthetic aperture radar (SAR), a novel maximum-likelihood-based Doppler centroid estimation algorithm is developed. During the estimation process, the Doppler centroid is estimated by using the maximum-likelihood approach to combine the range-frequency-variant Doppler characteristics in each channel, such as the cross-functions between neighbouring channels in the range-frequency domain. In addition, the channel mismatch in phase and along azimuth baseline position measurement error can also be estimated. Finally, the experimental results of some real squint mode MC-HRWS SAR data are utilised to validate the theoretical investigations and the proposed approach.
Starting Page	1630
Ending Page	1631
Page Count	2
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 22, Oct (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/22
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.2723
Journal	Electronics Letters
Publisher Date	2014-10-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Azimuth Baseline Position Measurement Error Channel Mismatch Maximum Likelihood Estimation Maximum-likelihood-based Doppler Centroid Estimation Algorithm MC-HRWS SAR System Multichannel in Azimuth High-resolution And Wide-swath Synthetic Aperture Radar Radar Equipment Range-frequency Domain Range-frequency-variant Doppler Characteristic Statistics Synthetic Aperture Radar System And Application
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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