Title :
Motion compensation for ISAR imaging using weights
Author :
Zhang, Y. ; Chen, Z.
Author_Institution :
Inst. of Electron., Acad. Sinica, Beijing, China
fDate :
June 28 1993-July 2 1993
Abstract :
The authors present a two-stage radial motion compensation technique for removing distortion in inverse synthetic-aperture radar (ISAR) images. The first stage is aimed at removing the gross radial motion (i.e., range cell alignment) using the mean value method. The second stage attempts to remove the residual phase variations not corrected in the first stage using a weighted phase regulation algorithm. It is shown that irregular translation motion of targets can be converted into rotating motion around a fixed axis. The resulting images in the microwave anechoic chamber and onsite are given.<>
Keywords :
anechoic chambers; microwave imaging; motion compensation; motion estimation; phase control; radar imaging; synthetic aperture radar; ISAR imaging; inverse synthetic-aperture radar; irregular translation motion; mean value method; microwave anechoic chamber; range cell alignment; rotating motion; two-stage radial motion compensation; weighted phase regulation algorithm; Airborne radar; Aircraft; Anechoic chambers; Delay; Equations; Image resolution; Motion compensation; Radar imaging; Random access memory; Signal resolution;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385581