调频连续波SAR非线性处理方法研究

董勇伟; 梁兴东; 丁赤飚

doi:10.3724/SP.J.1146.2009.00582

调频连续波SAR非线性处理方法研究

doi: 10.3724/SP.J.1146.2009.00582

董勇伟^{①②;梁兴东,},
梁兴东,
丁赤飚

计量
- 文章访问数: 4062
- HTML全文浏览量: 132
- PDF下载量: 1347
- 被引次数: 0
出版历程
- 收稿日期: 2009-04-24
- 修回日期: 2010-01-11
- 刊出日期: 2010-05-19

Non-linear Signal Processing for FMCW SAR

摘要

摘要: 合成孔径雷达系统畸变引入的幅相误差严重影响了雷达的成像效果，必须予以校正才能获得高质量的图像。该文针对调频连续波SAR系统频率响应非理想特性引入的幅相误差以及信号扫频非线性误差对系统性能的影响，分析建立了存在系统误差的调频连续波SAR系统回波信号模型，研究了系统误差估计与校正的问题，并考虑小型化调频连续波SAR实时成像处理的需求，提出了一种改进的适合实时成像处理的调频连续波SAR的高精度非线性距离-多普勒成像处理算法。最后，通过理论推导和仿真分析，验证了算法的可行性和有效性。
- 合成孔径雷达; 非线性; 调频连续波; 成像处理
Abstract: The inherent errors of radar system degrade seriously the performance of Synthetic Aperture Radar(SAR), and these errors should be calibrated to acquire high quality images. In this paper, to the issue of the impact of system errors and non-linearities in FMCW SAR, models of system errors are established, and then the estimation and calibration of system errors are investigated in detail. An improved non-linear high resolution range-Doppler algorithm for FMCW SAR is proposed, according to the requirements of mini-architecture and real-time in FMCM SAR imaging systems. Finally, the feasibility and validity of the presented algorithm is demonstrated with simulation.

HTML全文

参考文献(1)

杨蒿, 蔡竟业. 线性调频连续波合成孔径雷达成像算法[J]. 信息与电子工程, 2008, 6(3): 167-171.Yang Hao, and Cai Jing-ye. Linear frequency modulated continuous wave synthetic aperture radar imaging algorithm[J]. Information and Electronic Engineering, 2008, 6(3): 167-171.[2]陆必应, 梁甸农. 调频线性度对线性调频信号性能影响分析[J]. 系统工程与电子技术, 2005, 27(8): 1384-1386.Lu Bi-ying, and Liang Dian-nong. Effects of FM linearity on the performance of LFM signals[J]. Systems Engineering and Electronics, 2005, 27(8): 1384-1386.[3]江志红, 赵懿, 皇甫堪等. 调频连续波SAR的研究进展[J]. 现代雷达, 2008, 30(2): 20-24.Jiang Zhi-hong, Zhao Yi, and Huang Fu-kan, et al.. Development of FMCW SAR[J]. Modern Radar, 2008, 30(2): 20-24.[4]Meta A, Hoogeboom P, and Lighart L P. Range non-linearities correction in FMCW SAR[C]. International Geoscience and Remote Sensing Symposium, Denver, Colorado, USA, 2006: 403-406.Meta A, Hoogeboom P, and Lighart L P. Non-linear frequency scaling algorithm for FMCW SAR data[C]. European Radar Conference, Manchester, UK, 2006: 9-12.[5]梁毅, 王虹现, 刑孟道等.调频连续波SAR信号分析与成像研究[J].电子与信息学报.2008, 30(5):1017-1021浏览Liang Yi, Wang Hong-xian, and Xing Meng-dao, et al.. The analysis of FMCW SAR signal and image study[J].Journal of Electronics Information Technology.2008, 30(5):1017-1021[6]耿淑敏, 江志红, 程翥等. FM-CW SAR距离-多普勒成像算法研究[J].电子与信息学报.2007, 29(10):2346-2349浏览Geng Shu-min, Jiang Zhi-hong, and Cheng Zhu, et al.. Study on imaging algorithm of FM-CW SAR[J].Journal of Electronics Information Technology.2007, 29(10):2346-2349[7]De Wit J J M, Meta A, and Hoogeboom P. Modified range- Doppler processing for FM-CW synthetic aperture radar[J].IEEE Geoscience and Remote Sensing Letters.2006, 3(1):83-87[8]Edrich M. Ultra-lightweight synthetic aperture radar based on a 35 GHz FMCW sensor concept and online raw data transmission[J].IEE Radar, Sonar and Navigation.2006, 153(2):129-134

施引文献

资源附件(0)

访问统计