对降维STAP机载雷达的延时混叠转发干扰方法分析

doi:10.3969/j.issn.1001-506X.2020.08.11

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (8): 1718-1725.doi: 10.3969/j.issn.1001-506X.2020.08.11

对降维STAP机载雷达的延时混叠转发干扰方法分析

赵燕慧¹(), 汤建龙¹(), 李骥阳²(), 毕鲁浩¹()

1. 西安电子科技大学电子工程学院, 陕西西安 710071
2. 空军工程大学基础部, 陕西西安 710143

收稿日期:2019-12-16 出版日期:2020-07-25 发布日期:2020-07-27
作者简介:赵燕慧 (1995-),女,硕士研究生,主要研究方向为电子信息对抗与仿真技术。E-mail:xidian_zyh@163.com|汤建龙 (1978-),男,副教授,硕士研究生导师,博士,主要研究方向为电子信息对抗与仿真技术。E-mail:JLtang@xidian.edu.cn|李骥阳 (1991-),男,助教,硕士研究生,主要研究方向为雷达干扰技术。E-mail:lijiyang1991@163.com|毕鲁浩 (1995-),男,硕士研究生,主要研究方向为电子信息对抗与仿真技术。E-mail:bluhao@163.com
基金资助:
国家自然科学基金(61901332)

Analysis of time-delay aliasing transmission jamming method for reduced dimension STAP airborne radar

Yanhui ZHAO¹(), Jianlong TANG¹(), Jiyang LI²(), Luhao BI¹()

1. School of Electronic Engineering, Xidian University, Xi'an 710071, China
2. Foundation Department of Air Force Engineering University, Xi'an 710143, China

Received:2019-12-16 Online:2020-07-25 Published:2020-07-27
Supported by:
国家自然科学基金(61901332)

摘要/Abstract

摘要：

针对降维空时自适应处理(space-time adaptive processing, STAP)在不满足独立同分布(independent identical distribution, IID)训练样本的需求时性能严重下降的问题,提出了一种改进的延时混叠转发干扰方法。该方法主要是通过延时混叠协同频率调制,产生多个距离单元分布可控的假目标,成为STAP前向滤波阶段选取的训练样本的一部分,从而破坏训练样本IID的条件,导致形成的空时自适应权产生主瓣畸变,最终无法获得真实的目标信息。仿真结果表明,该方法产生的假目标数目多且距离单元分布可控,降维STAP系统处理性能严重下降。

关键词: 降维空时自适应处理, 独立同分布, 延时混叠, 频率调制

Abstract:

Focusing on the serious performance degradation of the reduced dimension space-time adaptive processing (STAP) when it fails to meet the demand of independent identical distribution (IID) training samples, an improved time-delay aliasing transmission jamming method is proposed. This method mainly produces multiple false targets with controllable distribution of distance units through time-delay aliasing and frequency modulation, which become part of the training samples selected in the forward filtering stage of STAP. Thus, the condition of IID training samples is destroyed, leading to the main lobe distortion of the space-time adaptive weight, and the real target information cannot be obtained. The simulation results show that the false targets generated by this method are numerous and the distribution of distance units is controllable. The performance of the reduced dimension STAP system is severely degraded.

Key words: reduced dimension space-time adaptive processing (STAP), independent identical distribution (IID), time-delay aliasing, frequency modulation

中图分类号:

TN972

赵燕慧, 汤建龙, 李骥阳, 毕鲁浩. 对降维STAP机载雷达的延时混叠转发干扰方法分析[J]. 系统工程与电子技术, 2020, 42(8): 1718-1725.

Yanhui ZHAO, Jianlong TANG, Jiyang LI, Luhao BI. Analysis of time-delay aliasing transmission jamming method for reduced dimension STAP airborne radar[J]. Systems Engineering and Electronics, 2020, 42(8): 1718-1725.

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对降维STAP机载雷达的延时混叠转发干扰方法分析

Analysis of time-delay aliasing transmission jamming method for reduced dimension STAP airborne radar

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