车载毫米波雷达目标检测综述

目标检测技术作为主动刹车系统的重要组成部分,对测距传感器的检测精度要求极高,毫米波雷达传感器是目标检测的最优选择。综述了毫米波雷达的发展状况、国内外现状、毫米波雷达目标检测算法,介绍了国内外多个重点实验室对毫米波雷达目标检测算法的研究情况,重点放在多传感器融合检测和毫米波雷达多目标检测上。阐述了车载毫米波雷达目标检测的技术难点,对未来毫米波雷达的发展方向提出了建议,以期为后续的研究开发做准备。     

毫米波雷达技术前景分析

通过对毫米波雷达技术各关键技术的发展现状、发展趋势,以及中国与外国在毫米波雷达技术领域的最新发展动态进行分析,指出了毫米波雷达的技术优势和局限性,提出了毫米波雷达未来发展的方向,并探索4D毫米波雷达的技术方向,以供科研人员和专业技术人员参考。     

毫米波相控阵雷达及其应用发展

概述了毫米波相控阵雷达的特点,介绍了电扫原理和主要毫米波电扫技术,以及相位控制扫描和多种移相器技术。针对毫米波相控阵雷达的特点,叙述了其主要应用领域,结合雷达和半导体技术对毫米波相控阵雷达的发展进行了展望。     

雷达横截面毫米波测量雷达

毫米波频段有着广泛的应用领域,越来越受到人们的重视。文章介绍毫米波的应用领域之一——雷达横截面毫米波测量雷达,分析了等离子体效应,介绍了雷达横截面测量原理和测量装置,并对35GHz和70GHz的毫米波测量雷达作了概括的描述。     

浅谈毫米波雷达研究及其应用

随着技术发展,毫米波器件、毫米波集成电路日趋成熟,毫米波雷达在国内外得到了深入的研究和应用。本文分析了毫米波的波段特性,对毫米波雷达的研究及其应用进行了介绍。     

毫米波雷达的应用及发展

随着毫米波技术的应用,毫米波频率的雷达也得到了更深的研究和发展,毫米波雷达具有导引精度高、抗干扰能力强、多普勒分辨率高、等离子体穿透能力强等特点;因此其广泛的用于末制导、引信、工业、医疗等方面．评述了毫米波雷达的优缺点,以及它的应用,详细阐述了军用毫米波雷达发展的新技术和新方法。     

《电讯技术》专题资料《雷达探测技术》题要（六）

毫米波有源相控阵雷达及其系统设计（石星） 描述了毫米波有源相控阵雷达的特点和应用,讨论了直升机载毫米波有源相控阵火控雷达的系统设计,对设计中的几个关键问题进行了较详细的探讨。预测了直升机载火控雷达的发展方向。     

毫米波雷达的应用和发展

描述了毫米波雷达的特点和适用需求,介绍了毫米波雷达在直升机载侦察火控、战场监视、导弹制导、近程防空和星载空间探测方面的应用,探讨了毫米波雷达技术的发展趋势。     

毫米波雷达末制导反舰导弹抗质心干扰性能分析

现代海战中,反舰导弹正面临舰艇电子干扰的极大挑战。毫米波末制导雷达具有很强的抗无源干扰能力,十分适合应用于反舰导弹的末制导雷达。通过对比厘米波制导雷达和毫米波制导雷达的特性,分析了毫米波雷达末制导反舰导弹的抗质心干扰能力。     

毫米波雷达自适应门限点云成像方法研究

毫米波雷达作为一种重要的车载传感器,在自动驾驶领域得到了广泛地应用。近年来随着汽车智能化程度的提高,高质量雷达点云的生成受到了人们的极大关注。传统毫米波雷达点云成像由于存在杂波点太多、有效点云稀疏等缺点而限制了其在自动驾驶领域的发展。因此,如何提高毫米波雷达点云密度和质量成为了业界研究的重点问题。近年来,随着多输入多输出（MIMO）技术以及控制多片级联同步技术的成熟,使得毫米波雷达天线的角度分辨率得到了极大提升,推动了毫米波雷达在点云成像上的发展。在此基础上,本文设计了一套完整的毫米波雷达系统级点云成像算法,并使用TI公司的AWR2243级联雷达开发套件对实际场景进行数据采集,生成了较为致密可信的毫米波雷达三维点云图像,基本实现了对车载平台侧面场景的有效还原。      

Millimeter-wave radars for remotely sensing clouds andprecipitation

Millimeter-wave radars have been used since the early 1950s to study clouds and precipitation, but until recently these early instruments were limited to simple backscatter power measurements and were plagued by hardware problems. However, development of solid-state millimeter-wave componentry and high-power klystron amplifiers has spurred the evolution of reliable, coherent radars operating up to 95 GHz. In addition, advances in digital signal processing technology have resulted in single-card processors that can simultaneously execute algorithms to compute reflectivity, Doppler, and polarimetric quantities in real time. A review of the current state of the art in millimeter-wave cloud radars is presented, including a discussion of transmitters, antennas, and receiver components. Two radar systems built by the University of Massachusetts are described, including a mobile, dual-frequency (33- and 95-GHz) polarimetric radar, and an airborne 95-GHz polarimetric radar that was recently flown in a cooperative experiment with the University of Wyoming. Spaceborne applications are also discussed, especially the use of satellite-based 95-GHz radars for measuring the vertical distribution of clouds     

Traffic Surveillance System Based on a High-Resolution Radar

Traffic surveillance is an important civilian application of radars. The current high-resolution radars give new opportunities so that the traffic application may be redefined. In this paper, a traffic scenario with a high-resolution radar is presented. A range-bin alignment method, the Global Range Alignment, which comes from the focusing techniques in inverse synthetic aperture radar, is applied to obtain further capabilities than the usual velocity measurement: distinction between vehicle types via length estimation and adequate management in situations with simultaneous targets. Preliminary results from a real scenario using a high-resolution linear frequency-modulated continuous-wave millimeter-wave radar are shown.     

毫米波片上雷达技术研究进展

硅微电子技术的进步推动着雷达技术向着毫米波频段片上方向发展。片上雷达优良的性能和小型化优势使其在汽车及其他新领域获得越来越广泛的应用。阐述了基于SiGe BiCMOS和CMOS技术研制的几种主流硅毫米波片上雷达的电路结构、无源元件和封装技术,分析了其发展情况和面临的挑战,指出了片上毫米波雷达技术和应用的发展趋势。     

毫米波相控阵板级集成天线技术研究

随着毫米波雷达及通信系统的快速发展,有源相控阵天线日益成为当前研究的热门天线形式。然而,毫米波有源相控阵存在空间紧凑、结构复杂、装配繁琐等问题。本文介绍了一种可应用于毫米波相控阵的板级集成天线,并对其天线阵列、垂直过渡等关键结构的设计进行了讨论。该阵面将天线阵列、收发组件和馈电网络全部集成在一块基板上,具有结构简单易于量产的特点。文末给出了对所设计的有源阵面的暗室测试结果,结果表明该天线在毫米波雷达和通信系统中具有巨大的应用潜力。     

An ultrafast wide-band millimeter-wave (MMW) polarimetric radar for remote sensing applications

With the advent of high-frequency radio frequency (RF) circuits and components technology, millimeter-wave (MMW) radars are being proposed for a large number of military and civilian applications. Accurate and high-resolution characterization of the polarimetric radar backscatter responses of both clutter and man-made targets at MMW frequencies is essential for the development of radar systems and optimal detection and tracking algorithms. Toward this end, a new design is developed for ultrafast, wide-band, polarimetric, instrumentation radars that operate at 35 and 95 GHz. With this new design, the complete scattering matrix of a target (magnitude and phase) can be measured over a bandwidth of 500 MHz in less than 2 /spl mu/s. In this paper, the design concepts and procedures for the construction and calibration of these radars are described. In addition, the signal processing algorithm and data-acquisition procedure used with the new radars are presented. To demonstrate the accuracy and applicability of the new radars, backscatter measurements of certain points and distributed targets are compared with their analytical radar cross section (RCS) and previously measured /spl sigma//spl deg/ values, respectively, and good agreements are shown. These systems, which can be mounted on a precision gimbal assembly that facilitates their application as high-resolution imaging radar systems, are used to determine the MMW two-way propagation loss of a corn field for different plant moisture conditions.     

An airborne 95 GHz dual-polarized radar for cloud studies

A 95 GHz dual-polarization radar system was developed and flown on the University of Wyoming King Air research aircraft, from which it measured reflectivity, depolarization, and Doppler-derived velocity mean and standard deviation of a variety of clouds. This paper describes the radar and a data acquisition system that uses commercially available digitizers, signal processors, and signal generators. The authors also describe the tradeoffs between spatial resolution and ability to estimate reflectivity and velocity. This paper presents the first known airborne measurements of clouds made at 95 GHz; these are thought to be the most highly resolved millimeter-wave cloud images made to date. Depolarization, measured in terms of the linear depolarization ratio (LDR), was especially high in the melting band and in regions containing pristine ice crystals. These measurements demonstrate the advantages that high-spatial-resolution airborne millimeter-wave radars offer for the study of cloud microphysical properties     

Through-the-Wall Surveillance With Millimeter-Wave LFMCW Radars

The use of millimeter-wave radars allows a weight and size reduction of circuits and antennas, which is an important characteristic for Through-the-Wall Surveillance (TWS) applications. Furthermore, when using the millimeter-wave band, a large amount of bandwidth can be easily transmitted, given that the relative bandwidth is smaller. This leads to a high range resolution that allows for the discrimination of several targets that are very close in range, e.g., inside a room. The azimuth resolution is also improved due to the availability in this band of directive antennas with small dimensions. This paper studies the feasibility of using a millimeter-wave linear frequency-modulated continuous-wave radar in a TWS application. A TWS experiment in a real scenario has been done to demonstrate the validity of the theoretical analysis.      

Measurements of the propagation parameters of tree canopies at MMWfrequencies

The presence of trees in a given scene can hamper detection of nearby targets by millimeter-wave (MMW) radars especially at near grazing incidence. Proper characterization of scattering and attenuation in tree canopies is important for optimal detection algorithms. In this paper, a new technique for determining the extinction and volume backscattering coefficients in tree canopies using the measured radar backscatter response is proposed and verified experimentally. The technique, which can be applied to already available wideband radar backscatter data, is used to compute the extinction and volume backscattering coefficients of different tree canopies under various physical conditions. The dynamic range of these coefficients are presented and results at 35 GHz are compared with results at 95 GHz     

毫米波雷达及无源干扰技术浅析

针对毫米波具有的多普勒分辨率高、等离子体穿透能力强、高跟踪精度和制导精度等特点,介绍了毫米波雷达在空间目标识别、精密跟踪、炮弹弹道测量、导弹的末制导系统、主动寻的技术等军事领域中的典型应用,分析了可用于毫米波无源对抗的几种措施。