Title :
An efficient compensation method for ISAR imaging based on short time adaptive gaussian chirplet decomposition
Author :
Xianquan Luo ; Chengjin Shan ; GuiZhou Lv ; JiuEn Yu
Author_Institution :
Dept. of Electr. & Opt. Eng, Ordnance Eng. Coll., Shijiazhuang, China
Abstract :
The echoed signal model of the moving target for the stepped frequency radar is analyzed, and that translation and aberrance of high resolution range profiles and blurring of ISAR images are resulted in moving targets is pointed out. A new automatic motion estimation and motion compensation approach is proposed. This approach obtains the time-frequency chirprate used short time adaptive gaussian chirplet decomposition (ST-AGCD). It can automatically estimate the rough acceleration and velocity of targets. Then the estimated motion parameters are used to compensate the echoes. Simulation results prove that this method has good efficiency.
Keywords :
adaptive estimation; compensation; decomposition; image resolution; image restoration; motion compensation; motion estimation; parameter estimation; radar imaging; radar resolution; synthetic aperture radar; time-frequency analysis; ISAR image blurring; ST-AGCD; automatic motion parameter estimation; echoed signal model; motion compensation approach; radar resolution; short time adaptive Gaussian chirplet decomposition; stepped frequency radar analysis; time-frequency chirprate; Acceleration; Chirp; Imaging; Motion compensation; Radar imaging; Time-frequency analysis; ISAR imaging; ST-AGCD; motion compensation; motion estimation;
Conference_Titel :
Advanced Research and Technology in Industry Applications (WARTIA), 2014 IEEE Workshop on
Conference_Location :
Ottawa, ON
DOI :
10.1109/WARTIA.2014.6976416
