Mainlobe and Sidelobe Interferences Suppression Based on Two Sum &amp; Three Difference Channels for Irregular Subarrays

SUN Chen-wei; TAO Hai-hong; GUO Xiao-shuang; SONG Jia-qi

doi:10.3969/j.issn.0372-2112.2019.04.019

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Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays

更新时间：2025-07-16

- Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays
- Acta Electronica Sinica Vol. 47, Issue 4, Pages: 907-914(2019)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  Fundamental Research Funds for Universities (No.BDY06);Innovation Program of Science and Technology Commission of PRC Central Military Commission (No.**-H863-**-XJ-001-***-02)
- DOI：10.3969/j.issn.0372-2112.2019.04.019
  CLC： TN953
- Published Online：25 April 2019，
  
  Published：2019
- 稿件说明：
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SUN Chen-wei, TAO Hai-hong, GUO Xiao-shuang, et al. Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays[J]. Acta Electronica Sinica, 2019, 47(4): 907-914.
DOI：

SUN Chen-wei, TAO Hai-hong, GUO Xiao-shuang, et al. Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays[J]. Acta Electronica Sinica, 2019, 47(4): 907-914. DOI： 10.3969/j.issn.0372-2112.2019.04.019.

摘要

针对相控阵单脉冲雷达体制测角的情况，本文提出了一种降维双和/三差通道自适应同时抑制主、副瓣干扰的算法.该算法利用权值逼近的方法，在非均匀子阵上形成静态和、俯仰差、方位差、双差波束以及指向副瓣干扰方向的和波束，差波束、指向副瓣干扰的和波束作为静态和波束的辅助波束，双差波束作为差波束的辅助波束，根据维纳滤波原理通过对辅助波束的优化加权对消掉和波束中的主副瓣干扰信号及差波束中的主瓣干扰信号，设计出一种新的干扰抑制和测角跟踪算法.所提算法结构简单、测角精度高、能同时抑制主副瓣干扰且鉴角斜率无需修正.仿真实验和性能分析证明了所提算法的有效性和正确性.

Abstract

For adaptive monopulse technology in phased radar system

a novel algorithm for suppressing mainlobe and sidelobe interferences based on two sum and three difference channels is proposed in this paper.Weighting approximation method is adopted to produce weights to form sum

azimuth difference

elevation difference and double difference beams for irregular subarrays.Then azimuth difference

elevation difference beams and sum beam in the direction of sidelobe interference work as the auxiliary beams of static sum beam

while double difference beam works as the auxiliary beam of azimuth difference and elevation difference beams.Based on the principle of Wiener filter

the auxiliary beams are weighted in the optimized way to cancel the mainlobe and sidelobe interferences in the sum beam and mainlobe interference in azimuth difference and elevation difference beams.The proposed algorithm is of simple structure and high accuracy.It is able to simultaneously suppress the mainlobe and sidelobe interferences without distortion of monopulse ratio.Finally

the simulation results and analyses prove the effectiveness of the method.

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Mainlobe and Sidelobe Interferences Suppression Based on Two Sum & Three Difference Channels for Irregular Subarrays

DOI：10.3969/j.issn.0372-2112.2019.04.019

摘要

Abstract

关键词

Keywords

references