NDLI: Constant false alarm rate detection of slow targets in polarimetric along-track interferometric synthetic aperture radar imagery

Content Provider	IET Digital Library
Author	Peng, Zhang Feng, Zhang Jia Tao, Liu
Abstract	To improve the detection performance for ground moving targets with small radar-cross-section and low velocity in Along-Track Interferometric Synthetic Aperture Radar (AT-INSAR) system, this study explores new methods to elevate the target-to-clutter ratio by using full Polarimetric AT-INSAR (AT-POLINSAR). Three novel detectors that can achieve Constant False Alarm Rate (CFAR) detection are put forward for AT-POLINSAR at first, namely, the Suboptimal Interferometric Coherence Detector, the Generalized Polarimetric Whitening Filter and the Dual Detector. Secondly, the analytical expressions of their false-alarm rates are derived under the Gaussian distribution assumption of the six-dimensional polarimetric interferometric vector, then the estimation methods of distribution parameters and the calculating methods of detection thresholds as well as the specific implementation schemes of CFAR detection are given. Finally, the proposed detectors are compared with single-polarimetric AT-INSAR detectors and full polarimetric log-likelihood-ratio test through both the Monte Carlo detection experiments and the scene detection experiments of simulated AT-POLINSAR imagery, where the results indicate that new methods have rather higher CFAR detection performance and velocity estimation accuracy than current single-polarimetric detectors.
Starting Page	31
Ending Page	44
Page Count	14
ISSN	17518784
Volume Number	13
e-ISSN	17518792
Issue Number	Issue 1, Jan (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5082
Journal	IET Radar, Sonar & Navigation
Publisher Date	2018-09-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Along-track Interferometric Synthetic Aperture Radar Imagery Along-Track Interferometric Synthetic Aperture Radar System AT-INSAR Detectors Calculating Method Constant False Alarm Rate Detection Detection Thresholds Dual Detector Estimation Method False-alarm Rates Gaussian Distribution Gaussian Distribution Assumption Generalized Polarimetric Whitening Filter Higher CFAR Detection Performance Low Velocity Monte Carlo Detection Experiments Monte Carlo Method Object Detection Optical, Image And Video Signal Processing Polarimetric AT-INSAR Polarimetric Log-likelihood-ratio Test Radar Clutter Radar Detection Radar Equipment Radar Imaging Radar Interferometry Radar Polarimetry Radar-cross-section Remote Sensing by Radar Scene Detection Experiments Simulated AT-POLINSAR Imagery Single-polarimetric Detector Six-dimensional Polarimetric Interferometric Vector Slow Targets Statistics Suboptimal Interferometric Coherence Detector Synthetic Aperture Radar System And Application Target-to-clutter Ratio Velocity Estimation Accuracy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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