Ground Moving Target Displacement Compensation and Performance Analysis in the DPCA Based SAR-GMTI System
نویسندگان
چکیده
منابع مشابه
SAR Ground Moving Target Indication Based on Relative Residue of DPCA Processing
For modern synthetic aperture radar (SAR), it has much more urgent demands on ground moving target indication (GMTI), which includes not only the point moving targets like cars, truck or tanks but also the distributed moving targets like river or ocean surfaces. Among the existing GMTI methods, displaced phase center antenna (DPCA) can effectively cancel the strong ground clutter and has been w...
متن کاملMoving Target Motion Parameter Estimation in Two-Channel SAR-GMTI
Part 1: Two-channel SAR-GMTI systems are suboptimal for moving target motion parameter estimation. Indeed, the ATI phase estimate of a moving target across-track velocity component is biased to lower values depending on the target signal to clutter ratio and the target across-track velocity. Additional antenna diversity can introduce additional degrees of freedom th...
متن کاملAn airborne synthetic aperture radar (SAR) experiment to support RADARSAT-2 ground moving target indication (GMTI)
As part of the preparatory work for the RADARSAT-2 moving object detection experiment (MODEX special operating mode), an airborne experiment was conducted at Canadian Forces Base Petawawa in July 1999 to study synthetic aperture radar (SAR) along-track interferometry (ATI) and SAR displaced phase centre antenna (DPCA) as candidate measurement techniques. The CV 580 SAR system operated by Enviro...
متن کاملFirst Spaceborne SAR-GMTI Experimental Results for the Chinese Gaofen-3 Dual-Channel SAR Sensor
In spaceborne synthetic aperture radar (SAR) sensors, it is a challenging task to detect ground slow-moving targets against strong clutter background with limited spatial channels and restricted pulse repetition frequency (PRF). In this paper, we evaluate the image-based dual-channel SAR-ground moving target indication (SAR-GMTI) workflow for the Gaofen-3 SAR sensor and analyze the impact of st...
متن کاملGround Moving Target Detection Based on Region-correlation Ratio Weighted of DPCA
Displaced phase center antenna (DPCA) and along-track interferometry (ATI) are two classical techniques used to determine synthetic aperture radar-ground moving target indication (SAR-GMTI) field. According to the research from now, conventional DPCA is superior to ATI[1],[2]. But, even the conventional DPCA is not all that could be desired. This paper proposes the algorithm called region-corre...
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ژورنال
عنوان ژورنال: The Journal of Korean Institute of Electromagnetic Engineering and Science
سال: 2009
ISSN: 1226-3133
DOI: 10.5515/kjkiees.2009.20.11.1138