Sensors 2008, 8(5), 3438-3446; doi:10.3390/s8053438
A Two Dimensional Overlapped Subaperture Polar Format Algorithm Based on Stepped-chirp Signal
Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
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Received: 3 April 2008 / Accepted: 19 May 2008 / Published: 26 May 2008
(This article belongs to the Special Issue Synthetic Aperture Radar (SAR))
Abstract
In this work, a 2-D subaperture polar format algorithm (PFA) based on steppedchirp 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:
Synthetic aperture radar (SAR); subaperture; synthetic bandwidth; steppedchirp signal; space-variant phase compensation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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MDPI and ACS Style
Mao, X.; Zhu, D.; Nie, X.; Zhu, Z. A Two Dimensional Overlapped Subaperture Polar Format Algorithm Based on Stepped-chirp Signal. Sensors 2008, 8, 3438-3446.