Title :
An overlapped subaperture polar format algorithm based on sub-chirp signals
Author :
Mao, Xinhua ; Zhu, Daiyin ; Zhu, Zhaoda
Author_Institution :
Dept. of Electron. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
In this work, a 2-D subaperture polar format algorithm (PFA) based on stepped-chirp signal is proposed. Instead of traditional pulse synthesis preprocessing, the presented method integrates the pulse synthesis process into the range subaperture processing. Meanwhile, due to the multi-resolution property of subaperture processing, this algorithm is able to compensate the space-variant phase error caused by the radar motion during the pulse cluster. Point target simulation has validated the presented algorithm.
Keywords :
image motion analysis; image resolution; synthetic aperture radar; multiresolution property; overlapped subaperture polar format algorithm; pulse synthesis preprocessing; radar motion; space-variant phase error; stepped-chirp signal; subaperture processing; Bandwidth; Clustering algorithms; Layout; Radar antennas; Radar imaging; Radar remote sensing; Signal resolution; Signal synthesis; Spaceborne radar; Synthetic aperture radar; Synthetic aperture radar (SAR); phase compensation; space-variant; stepped-chirp signal; subaperture; synthetic bandwidth;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540903
