单脉冲成像算法性能分析

电子与自动控制

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单脉冲成像算法性能分析

吴迪, 朱岱寅, 田斌, 朱兆达

南京航空航天大学电子信息工程学院, 江苏南京 210016

收稿日期:2011-09-14 修回日期:2012-02-05 出版日期:2012-10-25 发布日期:2012-10-25
通讯作者: 吴迪 E-mail:wudi_nuaa@yahoo.cn
基金资助:
国防基础科研计划(B2520110008);国家自然科学基金(61071165);新世纪优秀人才支持计划(NCET-09-0069);中国博士后科学基金(2012M511750);中央高校基本科研业务费专项基金(NS2012097)

Performance Evaluation for Monopulse Imaging Algorithm

WU Di, ZHU Daiyin, TIAN Bin, ZHU Zhaoda

College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2011-09-14 Revised:2012-02-05 Online:2012-10-25 Published:2012-10-25
Supported by:
Defense Industrial Technology Development Program (B2520110008); National Natural Science Foundation of China (61071165); Program for New Century Excellent Talents in University (NCET-09-0069); China Postdoctoral Science Foundation (2012M511750); The Fundamental Research Funds for the Central Universities (NS2012097)

摘要/Abstract

摘要： 单脉冲技术通过比较单个脉冲多路回波信号的信息实现对目标角度位置的精确测量,广泛运用于跟踪雷达中。在雷达成像中引入单脉冲技术可以显著提高前视这一合成孔径雷达(SAR)与多普勒波束锐化(DBS)成像盲区雷达图像的清晰度。本文着重对单脉冲成像算法的成像效果分析方法进行研究。从单脉冲和差比的概率密度函数出发,提出了目标图像位置失真、分辨率以及图像信噪比3个对图像质量进行衡量的指标。分析了决定这3个指标的系统及外部环境参数,并给出了相应的计算方法。最终通过数值积分以及Monte-Carlo仿真实验对理论分析结果进行了验证。

关键词: 雷达成像, 单脉冲, 和差波束, 分辨率, 信噪比

Abstract: Monopluse is a technique by which information concerning the angular location of a target is obtained by comparison of signals received in multi-channels. By introducing monopulse into the procedure of radar imaging, the definition concerning the forward-looking area is significantly improved, which can hardly be achieved by syntheic aperture radar (SAR) or Doppler beam sharpening (DBS). This paper concentrates on the method for evaluating the quality of images generated via the monopulse imaging algorithm. Based on the probability density function of the monopulse ratio, three criterions, i.e., the image position distortion, resolution and signal-to-noise ratio of the target to be imaged, are proposed. Parameters of the system and external environment determining the proposed criterions are analyzed, and the ways to calculate the criterions are provided. Simulation results obtained via numerical integration as well as Monte-Carlo method verify the presented theories.

Key words: radar imaging, monopulse, sum and difference beam, resolution, signal-to-noise ratio (SNR)

中图分类号:

V243
TN958.4

吴迪, 朱岱寅, 田斌, 朱兆达. 单脉冲成像算法性能分析[J]. 航空学报, 2012, 33(10): 1905-1914.

WU Di, ZHU Daiyin, TIAN Bin, ZHU Zhaoda. Performance Evaluation for Monopulse Imaging Algorithm[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(10): 1905-1914.

参考文献

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

单脉冲成像算法性能分析

Performance Evaluation for Monopulse Imaging Algorithm

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