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Journal of Applied Remote Sensing • Open Access

Focusing bistatic forward-looking synthetic aperture radar based on modified Loffeld’s bistatic formula and chirp scaling algorithm
Author(s): Chao Ma; Hong Gu; Weimin Su; Chuanzhong Li; Jinli Chen

Paper Abstract

A focusing solution for bistatic forward-looking synthetic aperture radar (BFSAR) is presented. Forward-looking imaging is highly desirable in some potential applications, such as self-landing in bad weather, military surveillance, and navigation. Unfortunately, monostatic synthetic aperture radar reaches its limit when it is used in a forward-looking configuration. BFSAR can provide a high-resolution image in the forward-looking direction. However, due to the special forward-looking geometry, many proposed methods of deriving a bistatic point target reference spectrum (BPTRS) cannot handle the BFSAR data well. A modified Loffeld’s bistatic formula (MLBF) for a forward-looking configuration is proposed first; it can get an accurate BPTRS of BFSAR. Then, a chirp scaling algorithm (CSA) based on MLBF is derived. CSA without interpolation allows high performance. Numerical simulations show that the proposed focusing solution can handle the BFSAR data well and achieve a high-resolution focused image.

Paper Details

Date Published: 22 July 2014
PDF: 12 pages
J. Appl. Remote Sens. 8(1) 083586 doi: 10.1117/1.JRS.8.083586
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
Chao Ma, Nanjing Univ. of Science and Technology (China)
Hong Gu, Nanjing Univ. of Science and Technology (China)
Weimin Su, Nanjing Univ. of Science and Technology (China)
Chuanzhong Li, Nanjing Univ. of Science and Technology (China)
Jinli Chen, Nanjing Univ. of Information Science and Technology (China)


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