An improved global range alignment is presented for inverse synthetic aperture radar (ISAR) imaging. The shifts of the echoes are modeled as a polynomial, and the coefficients of this polynomial are chosen to optimize a quality measure of range alignment. The shift in the time domain is carried out by introducing a phase ramp in the frequency domain in order to remove the limitation of integer steps. Because the quality measure of range alignment is calculated directly in the frequency domain, this method is computationally more efficient than the original global method.
Improved Global Range Alignment for ISAR
IEEE Transactions on Aerospace and Electronic Systems ; 43 , 3 ; 1070-1075
01.07.2007
2192784 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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