Open Access3D velocity estimation based on FrFT for multi‐static SAR
Author(s) -
Liu Mei,
Wang Pengfei,
Wang Zhigui
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.2035
Subject(s) - doppler effect , synthetic aperture radar , doppler frequency , fractional fourier transform , centroid , range (aeronautics) , fourier transform , computer science , inverse synthetic aperture radar , radar , algorithm , mathematics , radar imaging , computer vision , artificial intelligence , physics , telecommunications , mathematical analysis , engineering , fourier analysis , astronomy , aerospace engineering
The problem of estimating 3D velocity for slowly moving target in synthetic aperture radar (SAR) images is addressed. To solve this task, a new scheme based on multi‐static SAR is presented. The developed scheme first estimates all values of the Doppler centroid and Doppler frequency rate in multi‐static SAR by fractional Fourier transform method. Then, a Doppler frequency rate is used to estimate the cross‐range velocity of the moving target. The Doppler centroids are used to estimate the range velocity and height velocity. Simulation results are given to demonstrate the effectiveness of the scheme.