Title :
Global correlation envelope alignment of high precision
Author :
Li, Yu ; Chong-yi, Li
Abstract :
Envelope alignment is the foundation of ISAR motion compensation. Algorithm of global correlation envelope alignment is improved in this paper by using the character of Fourier transform frequency shifts. By using the algorithm proposed by us completes range rough alignment at first, then adjusts the range profile which has been aligned rough within some of the imaging pulses according to frequency shifts factors, the accuracy is enhanced through this algorithm.
Keywords :
Fourier transforms; Global Positioning System; correlation methods; motion compensation; synthetic aperture radar; Fourier transform frequency shifts; ISAR; frequency shifts factors; global correlation envelope alignment; high precision; imaging pulses; motion compensation; Delay effects; Entropy; Fourier transforms; Frequency; Motion compensation; Robustness; Scattering; Signal resolution; correlation; isar; motion compensation;
Conference_Titel :
Synthetic Aperture Radar, 2007. APSAR 2007. 1st Asian and Pacific Conference on
Conference_Location :
Huangshan
Print_ISBN :
978-1-4244-1188-7
Electronic_ISBN :
978-1-4244-1188-7
DOI :
10.1109/APSAR.2007.4418734
