Performance of moving target parameter estimation using SAR
نویسندگان
چکیده
منابع مشابه
Moving 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 کاملMoving Target Detection and Trajectory Estimation Using SAR Data
Conventional Synthetic Aperture Radar processing leads to moving targets being imaged displaced from their real positions and blurred. This is mainly due to the used reference phase no longer being valid, including an additional Doppler-shift and a Doppler-spread. Since these effects are not considered in the focusing algorithm, the resulting SAR image shows the moving targets defocused and/or ...
متن کاملRobust Moving Target Detection and Parameter Estimation Based on Three-channel SAR Images
Ground moving target indication (GMTI) is an important function of many airborne or spaceborne synthetic aperture radar (SAR) systems. The detection of ground moving targets based on SAR images, called SAR-GMTI, is a popular way. It is difficult for a conventional single-channel SAR system to achieve good GMTI performance, because of the difficulty in separating the ground moving targets from t...
متن کاملMoving-target Velocity Estimation in a Complex-valued Sar Imagery
In the ground moving target indication with synthetic aperture radar (SAR) community, algorithms used to estimate the velocity of a detected moving target are important because they are relative to the topics about refocusing and azimuth displacement correction. The velocity is regarded as a vector with two components, one in azimuth and one in range direction, and new algorithms aiming at esti...
متن کاملSAR and Moving Target Indication
Synthetic aperture radar provides high-resolution images of the non-moving ground scene, but fails to indicate and position moving objects. A short review of the motioninduced effects occurring in SAR images will open this lecture. Like in special airborne MTI systems, the solution to the SAR MTI problem is to use an array of antennas or subapertures and several receiving channels to cancel the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 2015
ISSN: 0018-9251
DOI: 10.1109/taes.2015.120327