Estimating the Doppler centroid of SAR data
نویسندگان
چکیده
منابع مشابه
Comparison of Doppler Centroid Estimation Methods in SAR
This paper compares five Doppler centroid estimation methods which are :energy balancing, matched-correlation , maximum likelihood, correlation Doppler estimator(CDE) and sign Doppler estimator (SDE). Their estimation performances in raw data domain and image domain are studied. The computer simulation results are presented. ERS-1 raw data are also used to test the performances of every method....
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synthetic aperture radar (sar), which has been widely used for earth remote sensing, provides high resolution, day-and-night and weather-independent images for a multitude of applications. design of sar sensors has had some considerations, associated to sar systems issues (microwave propagation, antenna, orbit design and etc.). altitude and attitude errors of sar sensor have a direct effect on ...
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llstimation This paper presents a new range and Doppler centroid estimation algorithm for a ScanSAR system. Its accurate range and Doppler centroid estimates lead to refined radar pointing angles, which enables the ScanSAR imagery meeting its radiometric requirements. This algorithm attains an accuracy equal to the Cramer Rae's lower bound for both the homogeneous and quasi-homogeneous targets....
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 1989
ISSN: 0018-9251
DOI: 10.1109/7.18675