外辐射源雷达中基于八单元均匀圆阵天线的测角方法

doi:10.3969/j.issn.0372-2112.2015.10.021

电子学报 ›› 2015, Vol. 43 ›› Issue (10): 2022-2027.DOI: 10.3969/j.issn.0372-2112.2015.10.021

外辐射源雷达中基于八单元均匀圆阵天线的测角方法

吕小永, 王俊, 焦雪

西安电子科技大学雷达信号处理国家重点实验室, 陕西西安 710071

收稿日期:2014-01-07 修回日期:2014-06-09 出版日期:2015-10-25
- 作者简介:
- 吕小永 男,1988年6月出生,河南洛阳人,西安电子科技大学在读博士生,从事外辐射源雷达目标检测与跟踪方面的研究.E-mail:zzuxiaoyong@163.com;王俊男,1969年8月出生,西安电子科技大学雷达信号处理国家重点实验室教授,博士生导师.主要研究方向:无源探测、定位及跟踪,自适应信号处理,无源雷达成像,高速信号处理技术.E-mail:wangjun@xidian.edu.cn焦雪女,1990年1月出生,西安电子科技大学研究生,从事外辐射源雷达信号处理与目标检测方面的研究.E-mail:jiaoxue1990@163.com
- 基金资助:
- 国家自然科学基金 (No.61372136)

A DOA Finding Method in Passive Radar Using an 8-Element Uniform Circular Array

LÜ Xiao-yong, WANG Jun, JIAO Xue

National Lab of Radar Signal Processing, Xidian University, Xi'an, Shaanxi 710071, China

Received:2014-01-07 Revised:2014-06-09 Online:2015-10-25 Published:2015-10-25
- Supported by:
- National Natural Science Foundation of China (No.61372136)

摘要/Abstract

摘要：

提出了一种适用于外辐射源雷达的比幅测角方法,利用八单元均匀圆阵天线结合方向图综合技术形成覆盖全空域的十八个波束,用以对目标进行扫描.首先进行波束扫描、杂波相消、距离多普勒处理,然后在距离多普勒平面上进行测角.对参考信号中含有目标回波的情况进行了分析,参考信号中含有目标回波时原始比幅测角方法的测角精度将受到较大的影响,针对该问题,提出了修正的测角方法,修正测角方法与原始方法相比在参考信号含有目标回波时能够更加精确地测量得到目标的方位角.

关键词: 外辐射源雷达, 比幅测角, 方向图综合, 修正的测角方法, 均匀圆阵

Abstract:

A direction of arrival (DOA) finding method in passive radar is proposed based on amplitude comparison of signals between different beams.By the use of an 8-element uniform circular array, 18 beams covering the whole space for targets surveillance are formed based on beam pattern synthesis technique.On the process of beam scanning, clutter cancellation and match filtering, DOA is estimated on the range-doppler map.Performance of the original method is analyzed when reference signal is contaminated by target echoes, where the performance of the original method degrades rapidly.An improved method is proposed for the case when reference signal is contaminated by target echoes.Experiments show that the improved method well outperforms the original method when reference signal is contaminated by target echoes.

Key words: passive radar system, amplitude comparison angle measurement, beam pattern synthesis technique, improved direction of arrival (DOA) finding method, uniform circular array

中图分类号:

TN958.97

. 外辐射源雷达中基于八单元均匀圆阵天线的测角方法[J]. 电子学报, 2015, 43(10): 2022-2027.

. A DOA Finding Method in Passive Radar Using an 8-Element Uniform Circular Array[J]. Acta Electronica Sinica, 2015, 43(10): 2022-2027.

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外辐射源雷达中基于八单元均匀圆阵天线的测角方法

A DOA Finding Method in Passive Radar Using an 8-Element Uniform Circular Array

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