汽车雷达多域联合调制波形

doi:10.12305/j.issn.1001-506X.2023.11.05

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (11): 3402-3410.doi: 10.12305/j.issn.1001-506X.2023.11.05

汽车雷达多域联合调制波形

连红飞¹, 龙佳敏²^,³, 胡雪瑶²^,³^,⁴, 蒋彦雯¹, 李东升¹, 范红旗¹^,*

1. 国防科技大学ATR全国重点实验室, 湖南长沙 410073
2. 北京理工大学信息与电子学院雷达技术研究所, 北京 100081
3. 北京理工大学信息与电子学院CEMEE国家重点实验室电磁感知研究中心, 北京 100081
4. 北京理工大学重庆创新中心, 重庆 401120

收稿日期:2022-08-10 出版日期:2023-10-25 发布日期:2023-10-31
通讯作者: 范红旗
作者简介:连红飞(1997—), 男, 博士研究生, 主要研究方向为雷达信号处理
龙佳敏(1996—), 女, 博士研究生, 主要研究方向为汽车雷达波形设计与信号处理、目标检测与估计方法等
胡雪瑶(1990—), 男, 助理教授, 博士, 主要研究方向为毫米波雷达系统设计、雷达捷变波形信号处理
蒋彦雯(1991—), 女, 副教授, 博士, 主要研究方向为阵列雷达成像与精确制导应用
李东升(1994—), 男, 博士研究生, 主要研究方向为多目视觉SLAM, 目标跟踪
范红旗(1978—), 男, 研究员, 博士, 主要研究方向为主动感知系统、目标跟踪、信息融合与智能导引

Multi domain joint modulation waveform for automotive radar

Hongfei LIAN¹, Jiamin LONG²^,³, Xueyao HU²^,³^,⁴, Yanwen JIANG¹, Dongsheng LI¹, Hongqi FAN¹^,*

1. National Key Laboratory of Science and Technology on Automatic Target Recognition, National University of Defense Technology, Changsha 410073, China
2. Radar Research Laboratory, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
3. Electromagnetic Sensing Research Center of CEMEE State Key Laboratory, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
4. Beijing Institute of Technology Chongqing Innvotion Center, Chongqing 401120, China

Received:2022-08-10 Online:2023-10-25 Published:2023-10-31
Contact: Hongqi FAN

摘要/Abstract

摘要：

针对汽车雷达时分复用(time-division multiplexing, TDM)多输入多输出(multiple-input multiple-output, MIMO)波形中存在的时间空间利用率低及高速目标多普勒模糊等问题, 提出一种多域联合调制的汽车雷达波形。该波形在时域上进行脉冲重复间隔参差抖动, 利用奇偶序列之间相位差实现速度解模糊, 在频域和空域上通过多天线间的多普勒频率调制实现波形正交, 提高了时间空间发射效率。仿真实验及基于汽车雷达波形验证系统的实测结果均验证了所提波形的有效性, 与传统TDM-MIMO波形对比, 所提波形具有更大的不模糊测速范围和相参积累增益, 不仅对汽车雷达工程实践具有较强的应用价值, 而且对低成本导引或防撞探测系统同样具有指导意义。

关键词: 汽车雷达, 多输入多输出雷达, 多域联合调制, 速度解模糊, 正交波形

Abstract:

In view of the problems of low time-space utilization and Doppler ambiguity of high-speed targets in time division multiplexing (TDM) multiple input multiple output (MIMO) waveforms of automotive radar, a multi domain jointly modulated automotive radar waveform is proposed. The waveform is jittered with pulse repetition intervals in the time domain, so that the phase difference between odd and even sequences can be used to realize velocity ambiguity resolution. In frequency and spatial domain, the waveform orthogonality is achieved by Doppler frequency modulation, which improves the transmission efficiency in time and space. The effectiveness of the proposed waveform is verified by simulation and experimental results based on the automotive radar waveform verification system. Compared with the traditional TDM-MIMO waveform, this waveform has a larger unambiguous velocity range and coherent accumulation gain. The waveform not only has strong application value for automotive radar engineering practice, but also has guiding significance for low-cost guidance or collision avoidance detection systems.

Key words: automotive radar, multiple input multiple output (MIMO) radar, multi-domain joint modulation, velocity ambiguity solution, orthogonal waveform

中图分类号:

TN958.94

连红飞, 龙佳敏, 胡雪瑶, 蒋彦雯, 李东升, 范红旗. 汽车雷达多域联合调制波形[J]. 系统工程与电子技术, 2023, 45(11): 3402-3410.

Hongfei LIAN, Jiamin LONG, Xueyao HU, Yanwen JIANG, Dongsheng LI, Hongqi FAN. Multi domain joint modulation waveform for automotive radar[J]. Systems Engineering and Electronics, 2023, 45(11): 3402-3410.

图/表 17

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参考文献 30

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参数	参数值
载频/GHz	77
带宽/MHz	150
发射天线个数/个	3
接收天线个数/个	4
脉冲重复周期/μs	50
脉冲个数/个	192
距离分辨率/m	1
速度分辨率/(m·s^-1)	0.2
最大无模糊速度范围/(m·s^-1)	±6.5

参数	目标1	目标2	目标3	目标4
真实距离/m	10	20	30	50
真实速度/(m·s^-1)	5	-15	30	45
真实角度/(°)	5	10	15	20
距离估计/m	10.01	20.04	30.05	50.1
模糊速度估计/(m·s^-1)	5.01	4.46	-8.93	6.09
奇序列二维谱峰点相位/rad	2.15	-2.97	-1.56	1.45
偶序列二维谱峰点相位/rad	-3.12	0.41	-2.03	-2.40
模糊数估计	0	-1	1	2
速度估计/(m·s^-1)	5.01	-15.02	30.03	45.05
角度估计/(°)	5.0	10.08	14.99	20.02

参数	电动车	汽车
真实速度/(m·s^-1)	-4.17	12.50
模糊速度/(m·s^-1)	1.07	1.47
相位信息1/rad	-2.13	-1.33
相位信息2/rad	1.05	-2.88
模糊倍数	-1	2
估计速度/(m·s^-1)	-4.34	12.29
估计角度/(°)	11.3	1.5

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汽车雷达多域联合调制波形

Multi domain joint modulation waveform for automotive radar

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