波形分集阵列新体制雷达研究进展与展望

朱圣棋; 余昆; 许京伟; 兰岚; 李西敏

doi:10.12000/JR21188

波形分集阵列新体制雷达研究进展与展望

DOI: 10.12000/JR21188

西安电子科技大学雷达信号处理国家重点实验室西安 710071

基金项目: 国家自然科学基金(61931016, 62071344, 62101402, 61911530246)，陕西省杰出青年科学基金(2019JC-16)，中国博士后科学基金(2021TQ0261, 2021M702547)

详细信息

作者简介:
朱圣棋(1984–)，男，江西赣州人，博士，教授。2010年在西安电子科技大学雷达信号处理国家重点实验室获得博士学位，现为西安电子科技大学雷达信号处理国家重点实验室教授。主要研究方向为雷达运动目标检测、频率分集阵列、波形分集阵列雷达信号处理

余　昆(1995–)，男，江苏泰州人，西安电子科技大学雷达信号处理国家重点实验室在读博士研究生。主要研究方向为合成孔径雷达成像、波形分集阵列雷达抗干扰技术等

许京伟(1987–)，男，山东日照人，博士，副教授。2015年在西安电子科技大学雷达信号处理国家重点实验室获得博士学位，现为西安电子科技大学雷达信号处理国家重点实验室副教授。主要研究方向为雷达系统建模、阵列信号处理、波形分集雷达(频率分集阵列和空时编码阵列)等

兰　岚(1993–)，女，陕西西安人，博士，准聘副教授。2020年在西安电子科技大学雷达信号处理国家重点实验室获得博士学位，现为西安电子科技大学雷达信号处理国家重点实验室准聘副教授。主要研究方向为波形分集阵列、雷达抗干扰方法、MIMO雷达技术

李西敏(1983–)，男，山东聊城人，博士。现担任西安电子科技大学雷达信号处理国家重点实验室副教授。主要研究方向为目标电磁散射建模、波形分集雷达抗干扰等

通讯作者:
朱圣棋 zhushengqi8@163.com

责任主编：王文钦 Corresponding Editor: WANG Wenqin
中图分类号: TN957
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- 被引次数: 13
出版历程
- 收稿日期: 2021-11-24
- 修回日期: 2021-12-23
- 网络出版日期: 2021-12-28
- 刊出日期: 2021-12-28

Research Progress and Prospect for the Noval Waveform Diverse Array Radar

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61931016, 62071344, 62101402, 61911530246), The Excellent Youth Foundation of Shaanxi Scientific Committee (2019JC-16), The China Postdocatoral Science Foundation (2021TQ0261, 2021M702547)

More Information

Corresponding author: ZHU Shengqi, zhushengqi8@163.com

摘要

摘要: 传统雷达存在主瓣欺骗式干扰难抑制、距离模糊杂波难分离等问题。一方面，由于增加了发射维自由度，波形分集阵列新体制的提出改变了雷达获取信息的方式。另一方面，通过灵活的系统设计和信号处理方法，增强了信息提取能力，在抗干扰、检测等方面比传统相控阵、MIMO雷达有明显的性能提升。该文总结了波形分集阵列雷达的国内外最新研究进展，分别从频率、时间和相位调制方式给出阵列分集体制的基本概念，并对波形分集阵列雷达的研究趋势进行了梳理。在现有基础理论和关键技术研究的基础上，验证波形分集阵列在提供目标新信息、增加系统额外可控自由度方面的优势，提升了新体制雷达的多维探测能力。
- 波形分集阵列 /
- 发射维自由度 /
- 频率分集阵列 /
- 时间分集阵列 /
- 阵元脉冲编码阵列 /
- 抗主瓣欺骗干扰 /
- 距离模糊杂波 /
- 高分宽幅成像
Abstract: It is difficult for the traditional radar to suppress deceptive mainlobe interference and separate the range ambiguous clutter. The proposal of a waveform diverse array changes the way of obtaining information through utilizing degrees-of-freedom in the transmit dimension. Through flexible system design and signal processing methods, this array enhances the ability of information extraction and improves the anti-jamming and detection performance, compared with the traditional phased array and Multiple-Input Multiple-Output (MIMO) radar. This paper summarizes the research progress of waveform diverse array radars in China and overseas and provides the basic concepts of the array diversity system regarding frequency, time, and phase modulation. Furthermore, the research trend of waveform diverse array radars has been discussed. Based on the existing basic theory and key technology research, the advantages of a waveform diverse array in providing new information about targets and increasing the additional controllable degrees-of-freedom of the system are verified, thereby improving the multidimensional detection capability of the new radar system.

HTML全文

图 1 方向图对比

Figure 1. Comparison of transmit pattern

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图 2 TDA发射方向图

Figure 2. Transmit pattern of TDA

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图 3 EPC发射波束示意图

Figure 3. Schematic diagram of transmit pattern for EPC radar

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图 4 发射方向图随距离的变化关系

Figure 4. The relationship between transmit pattern and range

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图 5 假目标产生示意图

Figure 5. Schematic diagram of false target generation

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图 6 干扰抑制原理

Figure 6. Principle of interference suppression

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图 7 FDA雷达主瓣欺骗式干扰抑制结果

Figure 7. Suppression results of deceptive interference in the mainlobe with FDA radar

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图 8 FDA雷达距离模糊信号的空间谱

Figure 8. Spatial spectrum of range ambiguious signals for FDA radar

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图 9 EPC相位编码方案

Figure 9. Phase coding scheme for EPC

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图 10 距离模糊回波分离方法

Figure 10. Separation method for range ambiguious echo

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图 11 机载雷达距离模糊杂波区域几何示意图

Figure 11. Geometric configuration of range ambiguity clutter for airborne radar

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图 12 距离模糊杂波功率谱示意图

Figure 12. Power distribution of range ambiguity clutter

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图 13 杂波功率谱IF曲线

Figure 13. IF curve of clutter power spectrum

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图 14 原理样机组成部件

Figure 14. Components of principle prototype

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图 15 外场试验场景及要素

Figure 15. Experiment scenarios and elements

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图 16 实际外场测试场景

Figure 16. Scenario of the actual outfield experiment

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图 17 杂波抑制结果

Figure 17. Results of clutter suppression

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图 18 干扰抑制结果

Figure 18. Results of interference suppression

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表 1 FDA和PA仿真参数

Table 1. Simulation parameters of FDA and PA

参数数值参数数值

发射阵元数M 10 带宽B 20 MHz
脉宽T_p 20 μs 采样率f_s 30 MHz
载频f₀ 16 GHz 阵元间距d λ₀/2
频偏 1/T_p

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表 2 TDA仿真参数

Table 2. Simulation parameters of TDA

参数数值参数数值

发射阵元数M 10 带宽B 20 MHz
脉宽T_p 20 μs 采样率f_s 30 MHz
载频f₀ 16 GHz 阵元间距d λ₀/2
时延 1/B

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表 3 雷达系统参数

Table 3. Parameters of radar

参数数值参数数值

收发通道数 16 带宽B 50 MHz
脉宽T_p 2.5 μs 采样率f_s 200 MHz
载频f₀ 9.5 GHz 阵元间距d λ₀/2

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