Title :
A two dimension overlapped subaperture polar format algorithm based on stepped-chirp signal
Author :
Mao, Xinhua ; Zhu, Daiyin ; Wang, Ling ; 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 period of a pulse cluster. Point target simulation has validated the presented algorithm.
Keywords :
radar resolution; synthetic aperture radar; 2D subaperture polar format algorithm; PFA algorithm; multiresolution property; pulse cluster radar motion; space-variant phase error; stepped-chirp signal; subaperture processing; synthetic aperture radar; target simulation; Bandwidth; Clustering algorithms; Image resolution; Layout; Radar antennas; Radar imaging; Radar remote sensing; Signal synthesis; Spaceborne radar; Synthetic aperture radar; Synthetic aperture radar (SAR); spatially-variant phase compensation; stepped-chirp; subaperture; synthetic bandwidth;
Conference_Titel :
Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-1765-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2008.4712144
