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CP-based MIMO OFDM radar IRCI free range reconstruction using real orthogonal designs

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Science China(Information Sciences) 2017年第2期60卷 40-48页

作者： Tianxian ZHANG Xiang-Gen XIA lingjiang kong The School of Electronic Engineering University of Electronic Science and Technology of China The Department of Electrical and Computer Engineering University of Delaware

In this paper, we propose a range reconstruction method for a frequency-band shared multipleinput multiple-output(MIMO) orthogonal frequency-division multiplexing(OFDM) radar with sufficient cyclic prefix(CP) by using real orthogonal designs. Compared with the application of complex orthogonal designs in our previous work, the application of real orthogonal designs can significantly reduce the number of the all-zero-valued pulses in a coherent processing interval(CPI) for each transmitter and increase the efficiency of radar transmitters. Meanwhile, it still maintains the advantages of full spatial diversity without inter-range-cell interference(IRCI). We also apply the rate-1 real orthogonal designs for different numbers of transmitters and pulses for range reconstruction without any idleness of radar transmitters. Simulation results are presented to illustrate the performances of the OFDM pulse design and the CP-based MIMO OFDM radar using real orthogonal designs.

关键词： cyclic prefix(CP) inter-range-cell interference(IRCI) multiple-input multiple-output(MIMO) radar real orthogonal designs orthogonal frequency division multiplexing(OFDM) pulse

Adaptive detector design of MIMO radar with unknown covariance matrix

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Journal of Systems Engineering and Electronics 2010年第6期21卷 954-960页

作者： lingjiang kong Guolong Cui Xiaobo Yang Jianyu Yang School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 P. R. China

The problem of detecting signal with multiple input mul-tiple output （MIMO） radar in correlated Gaussian clutter dominated scenario with unknown covariance matrix is dealt with. The gen-eral MIMO model, with widely separated sub-arrays and co-located antennas at each sub-array, is adopted. Firstly, the generalized likelihood ratio test （GLRT） with known covariance matrix is ob-tained, and then the Rao and Wald detectors are devised, which have proved that the Rao and Wald test coincide with GLRT detec-tor. To make the detectors fully adaptive, the secondary data with signal-free will be collected to estimate the covariance. The per-formance of the proposed detector is analyzed, however, it is just ancillary. A thorough performance assessment by several numer-ical examples is also given, which has considered the sense with co-located antennas configure of transmitters and receivers array. The results show that the performance the proposed adaptive de-tector is better than LJ-GLRT, and the loss can be acceptable in comparison to their non-adaptive counterparts.

关键词： MIMO radar generalized likelihood ratio test Rao and Wald tests correlated Gaussian clutter fully adaptive.

Non-LOS target localization via millimeter-wave automotive radar

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Journal of Systems Engineering and Electronics 2023年第5期34卷 1171-1181页

作者： LIU Zhaoyu ZHANG Wenli ZHENG Jingyue GUO Shisheng CUI Guolong kong lingjiang LIANG Kun School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China School of Intelligent Engineering Zhengzhou University of AeronauticsZhengzhou 450046China

This paper considers the non-line-of-sight(NLOS)vehicle localization problem by using millimeter-wave(MMW)automotive *** preliminary attempts for NLOS vehicle detection are carried out and achieve good ***,an electromagnetic(EM)wave NLOS multipath propagation model for vehicle scene is ***,with the help of available multipath echoes,a complete NLOS vehicle localiza-tion algorithm is ***,simulation and experimental results validate the effectiveness of the established EM wave propagation model and the proposed NLOS vehicle localization algorithm.

关键词： millimeter-wave(MMW)automotive radar multipath propagation model non-line-of-sight(NLOS)vehicle localization

Constant modulus sequence set design with low weighted integrated sidelobe level in spectrally crowded environments

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Science China(Information Sciences) 2022年第5期65卷 287-288页

作者： Yi BU Hui QIU Tao FAN Xianxiang YU Guolong CUI lingjiang kong School of Information and Communication Engineering University of Electronic Science and Technology of China

Dear editor,Radar waveform design with desired correlation properties has received considerable attention because of its performance improvement in the detection of a weak target [1,2].Moreover, owing to the increasin... 详细信息

关键词： Weighted Integrated Sidelobe Level Finite Alphabet Case Inexact Alternating Direction Penalty Method Spectral Congestion Constant Modulus Sequence Set

MICRO-MOTION TARGET SENSING BY STEPPED-FREQUENCY CONTINUOUS-WAVE RADAR

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Journal of Electronics(China) 2009年第6期26卷 782-787页

作者： kong lingjiang Zhou Yongshun Cui Guolong Yang Jianyu School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 China

Mechanical micro-vibration of a target may induce phase modulations on the radar echo,and the vibration can be detected to identify micro-motion target. In this paper,a new method to detect a micro-motion target and obtain its range and micro-motion frequency is proposed in which multiple periods stepped-frequency continuous-wave signal and Moving Target Indication (MTI) filter are adopted. The simulation results illustrate the validity of this method and present the detection of the target range and the vibration frequency. The experiment gives promising results.

关键词： Micro-motion Micro-Doppler Stepped-frequency continuous-wave MTI (Moving TargetIndication)

Adaptive detection for distributed targets in Gaussian noise with Rao and Wald tests

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Science China(Information Sciences) 2012年第6期55卷 1290-1300页

作者： SHUAI XiaoFei,kong lingjiang & YANG JianYu School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China 1. School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 610054 China

The problem of adaptively detecting a range distributed target or targets in Gaussian interference is considered in this *** is assumed that a set of secondary data is ***,we derive the adaptive Rao and Wald tests with one-step detection algorithm,and find that both of them are of the same asymptotic performance as the GLRT ***,the Rao and Wald tests are derived by resorting to the two-step design *** our surprise,our derivations show that all the Rao,Wald and GLR tests in the two-step design strategy are ***,the property assessments are *** is shown that these new detectors guarantee CFAR property with respect to the Gaussian ***,simulation results show that these results are accurate.

关键词： Rao and Wald tests adaptive detection distributed targets maximum likelihood estimator

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长航迹稳定跟踪的雷达功率分配算法

电子科技大学学报 2022年第6期51卷 841-846页

作者：王尧易伟孔令讲电子科技大学信息与通信工程学院成都611731

分布式组网雷达系统在处理跟踪任务时,低信噪比会导致目标检测概率小于1,进而可能导致目标航迹中断。为此,提出了一种长航迹稳定跟踪的分布式组网雷达功率分配算法,通过对雷达系统功率资源的优化配置,同时保证了航迹连续性与良好的系统... 详细信息

分布式组网雷达系统在处理跟踪任务时,低信噪比会导致目标检测概率小于1,进而可能导致目标航迹中断。为此,提出了一种长航迹稳定跟踪的分布式组网雷达功率分配算法,通过对雷达系统功率资源的优化配置,同时保证了航迹连续性与良好的系统跟踪性能。首先建立了分布式雷达回波信号及量测模型,然后推导了不确定性量测下的贝叶斯克拉美罗界(BCRLB),进而建立了功率分配问题数学模型。该优化问题中包含复杂非凸约束,为了对其进行高效求解,最后提出了一种基于凸优化的自约束功率分配(SCPA)算法。仿真结果表明,所提SCPA算法可以保证跟踪全阶段所有目标航迹不中断,并保持良好的跟踪性能。

关键词：分布式组网雷达功率分配稳定跟踪不确定量测

基于迭代修正的液晶相控阵激光雷达波控数据获取

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强激光与粒子束 2010年第9期22卷 2203-2208页

作者：孔令讲陈君朱颖杨建宇电子科技大学电子工程学院成都610054

分析了影响液晶相控阵波控数据获取的几个关键因素,在此基础上通过计算期望相位面与实际相位面的相位差,提出一种基于迭代修正的波控数据获取方法,该方法可通过改变加载在液晶阵列上的参考电压或改变参考相位面实现。讨论了算法关键参... 详细信息

分析了影响液晶相控阵波控数据获取的几个关键因素,在此基础上通过计算期望相位面与实际相位面的相位差,提出一种基于迭代修正的波控数据获取方法,该方法可通过改变加载在液晶阵列上的参考电压或改变参考相位面实现。讨论了算法关键参数的选择。通过仿真进一步研究了液晶特性曲线范围和高斯初始相位对波控数据获取的影响。仿真结果表明:该方法能获得比较准确的波控数据;液晶特性曲线范围对波控数据的准确获取非常重要,当曲线范围较大时,液晶相控阵可补偿高斯光束引入相位的影响。

关键词：液晶相控阵波控数据参考电压参考相位面迭代修正

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激光雷达液晶相控阵组件扫描精度分析

中国激光 2009年第5期36卷 1080-1085页

作者：孔令讲易伟杨建宇宋艳电子科技大学电子工程学院四川成都610054

扫描精度是激光雷达液晶相控阵扫描组件的一个重要指标。提出了一种对液晶相控阵扫描组件扫描精度误差进行定量计算的方法,利用瑞利-索末菲(Rayleigh-Sommerfeld)公式精确计算出扫描激光束的远场波束,得到角度误差值,采用角度误差值和3... 详细信息

扫描精度是激光雷达液晶相控阵扫描组件的一个重要指标。提出了一种对液晶相控阵扫描组件扫描精度误差进行定量计算的方法,利用瑞利-索末菲(Rayleigh-Sommerfeld)公式精确计算出扫描激光束的远场波束,得到角度误差值,采用角度误差值和3 dB主瓣宽度的比值对精度误差进行衡量。利用该方法对电压节化误差、制造误差、高斯预处理三种典型的因素进行了仿真分析,并得到三种误差造成的扫捕精度误差量级分别为10-3,10-2,10-5。因此,激光雷达液晶相控阵扫描组件的设计加工必须考虑加工精度对扫描角度的影响。

关键词：光学器件液晶相控阵扫描角度扫描精度