FBC钝型毫米波天线罩的研究

毫米波天线罩是国外近期发展研究的新技术,是用于新一代高性能、毫米波精确制导武器的重要部件。本文通过对毫米波天线罩的特性和研制特点分析,介绍了毫米波天线罩的选材要则;以有机高聚物复合材料为技术途径,进行了材料设计、筛选和试验;采用整体一次加工成型技术,研制成FBC钝型(球-柱形)毫米波天线罩。制件不需二次机加工,热、电、结构、透波性能优良。     

不断发展的毫米波对抗技术

介绍了毫米波（MMW）技术在电子对抗中的应用，指出了毫米波技术的优势，分析了毫米波技术固有的抗干扰特点，叙述毫米波技术在应用中存在的问题和今后需采取的措施以及发展方向。     

毫米波宽带成像测量雷达及其关键技术研究

针对国内毫米波宽带成像测量雷达的建设思路,从3个方面展开论述:首先,列举了国外相关雷达的主要技术指标,并对其技术特点进行分析,通过采用高功率发射机及功率合成技术、低损耗传输技术、低噪声接收机技术等,国外毫米波雷达实现了对远距离目标的探测,具备很高的测距测角精度、cm级的距离分辨率和极高的多普勒灵敏度,具有较强的目标识别能力;随后,通过对单脉冲机械跟踪和相控阵2种体制的优缺点进行比对分析,建议国内应采用单脉冲机械跟踪体制,并重点探讨了引导捕获和宽带测量方案;最后,对宽带大功率发射机、波束波导天馈线系统、宽带超导接收机以及宽带数据采集等关键技术及其国内基础进行了分析,并给出了发展建议。     

反舰导弹毫米波导引头对抗与反对抗

毫米波雷达由于天线体积小、重量轻,波束和脉宽窄,频带宽,具有良好的抗干扰性能,将成为反舰导弹导引头的主要发展方向.文中介绍了毫米波导引头的主要特点,分析了毫米波制导的优势,提出了对毫米波导引头的对抗措施,同时,就信号处理方面提出了一些反对抗措施.     

毫米波无人直升机避障雷达系统研究

由电力线所引起的无人直升机事故频频发生,因而确保无人机飞行安全一个很重要的方面就是对电力线的检测。文章采用毫米波宽带线性调频技术实现了对高压线小目标的探测分辨,研制了毫米波无人直升机避障雷达系统,解决了无人机低空巡线飞行的安全问题。通过实际挂飞试验说明,该系统可靠有效,满足装备要求。     

介质材料复介电常数变温测量技术综述

介绍了在微波及毫米波段介质材料复介电常数在-253—1400℃的变温测试方法，即网络参数法和谐振腔法，并对这些方法进行了优缺点分析，总结出变温测试方法的概况、趋势及技术特点。     

调频连续波毫米波雷达信号处理软件分析

雷达在其发展前期,连续波雷达由于收发隔离等问题不易解决,应用受限制。但是随着技术的发展,这些问题得到改善,连续波雷达越来越受到人们的关注。文章针对现有调频连续波雷达平台,通过分析研究雷达平台,介绍信号处理软件的设计思路与系统结构,设计与开发了信号处理软件。在此基础上,对雷达功能设计实现进行分析,对软件各模式功能进行实验测试,验证了其功能实现及测量精度,并进一步研究调频连续波雷达毫米波雷达用于导弹近程制导的可行性,介绍了调频连续波毫米波雷达的性能,指出其用于末端制导的缺陷并给出改善方法。     

毫米波制导导弹系统误差及捕获概率研究

分析了毫米波制导导弹系统误差源及其分布特性,该误差直接决定所需导引头动态视场的大小;对导引头动态视场的影响因素进行了分析,并计算了导引头在不同条件下的动态视场,基于此计算了导引头捕获概率。研究结果可以直接应用于毫米波制导导弹的工程研制,并且可以对同类的自寻的导弹工程研制起借鉴作用。     

基金档案

[项目编号]2008ZC12004[项目负责人]李宝森[依托单位]中航工业导弹院先进数据获取及融合新技术研究完成情况简介:在传统毫米波的基础上结合应用新型半导体材料GaN基紫外传感器和红外传感器完成多源传感器的信息融合。在数据获取技术研究方面;完成了基于0.35μm集成电路工艺的新型紫外读出电路(ROIC)设计,完成了基于真对数放大器的毫米波雷达接收技术研究。在数据融合技术研究方面,建立了基于模糊神经网络的多模信息融合智能推理     

基于LFMCW的空空导弹弹载SAR子孔径成像方法

线性调频连续波(LFMCW)合成孔径雷达(SAR)具有体积小、功耗低、分辨率高的特点已成为当前轻小型导引头雷达技术研究的热点.本文在详细分析了线性调频连续波信号特点的基础上,针对毫米波雷达应用于空空弹精确制导的需求,对其在高速平台、前斜视条件下成像的应用,建立了精确的去调频连续波信号模型.提出了一种基于FMCW毫米波雷达的子孔径成像算法,并通过仿真实验,验证了模型与算法的正确性     

ATS-5 Millimeter Wave Propagation Experiment

This paper describes the design of the millimeter wave experiment aboard the ATS-5 satellite. This equipment is the first millimeter wave communications equipment in space. The function of the equipment is to provide earthspace propagation data at Ku- and Ka- band frequencies. The designs of the phase locked Ka- band receiver, the Ku-band transmitter, the antennas, and the telemetry and processing equipment are described. Mechanical and environmental problems are also discussed.     

Image quality issues for an enhanced vision head up display

A part task simulation study was performed to determine the ability of pilots to land an aircraft using head up display (HUD) guidance symbology overlaying an emulated millimeter wave imagery. The task was to land in Category IIIa weather at a Category I facility. Three image parameters were varied: image update rate, image processing latency, and the luminance contrast ratio of the runway image to the background noise. ILS beam bending that was representative of a Category I facility was randomly varied across the experimental runs. Nine pilots completed the test matrix. The only variable that made a significant difference was the runway to background contrast ratio     

Effectiveness of MMW aerosols in defeating a battlefieldsurveillance radar: field demonstration preliminary results

The US Army ERDEC is developing advanced aerosol systems to combat threat surveillance, fire control, and seeker systems operating in the visible, infrared, and millimeter wave portions of the electromagnetic spectrum. One such system is the M56 multispectral smoke generator, which presently operates in the visible and infrared portions of the spectrum; a millimeter wave (MMW) Module is in development to extend the M56 spectral range. This paper documents preliminary results of a field demonstration test of the M56 MMW Module. An MMW instrumentation radar was modified to simulate the scan pattern and radar parameters of a tactical battlefield surveillance radar system. A test grid was populated with both stationary and moving tactical targets, and the radar scanned the grid to simulate a surveillance radar in operation. Once a realistic tactical engagement scenario was developed, MMW aerosols were deployed to demonstrate the impact such aerosols could have on radar detection and classification performance     

A passive millimeter wave camera for aircraft landing in lowvisibility conditions

Fog and low visibility conditions have hampered aviation since its inception. Fog-related accidents are numerous, and canceled take-offs and landings due to fog and low visibility conditions (Cat III) have significant economic impact on airlines, parcel carriers and general aviation. Millimeter waves have good propagation properties in weather and give adequate spatial resolution when used to image the forward scene. Passive millimeter wave focal plane array cameras are new sensors which, integrated into future guidance and landing systems, promise to be an effective aid, or alternative, to existing technology for aircraft landings and take-offs under Cat III conditions. They can produce visual-like radiometric images at real time frame rates (up to 30 Hz), and are directly amenable to image fusion with infrared and visible images. TRW has been actively involved in developing and productizing this technology both at the hardware and the system levels     

High resolution imaging of objects at Ka band

A coherent wideband millimeter wave (mmW) imaging radar which operates in two different imaging modes is briefly described. The principles of two-dimensional (2-D) high resolution imaging are introduced. The image reconstruction algorithm together with image enhancement techniques are discussed. Some experiments imaging on both scaled aircraft model and full-size large scale vehicle are presented     

微传感器最新发展

近年来，微传感器受到国际传感技术界的广泛关注，本文介绍十多个微传感器，包括三轴加速度计，单，双轴加速度计片，表面微机械陀螺（角速度传感器），微惯性导航系统，微磁通门传感器，磁阻传感器，纳米皮拉尼压力传感器，微科氏质量流量计，毫米波图像传感器，GPS手表（1cm^3)，二氧化碳传感器和微/超微角位移传感器，文事简要介绍它们的基本结构。敏感机理，特点等，从中可以看出微传感器已成为传感技术中有重要应用前景的组成部分。     

Programmable ultrawideband signal generator for electromagnetic susceptibility testing

Under Phase I of the Defense Advanced Research Projects Agency (DARPA) Networking in Extreme Environments (NETEX) initiative, Multispectral Solutions, Inc. (MSSI) was tasked with the development of a general-purpose, ultrawideband hardware simulator capable of reproducing a wide variety of ultrawideband (UWB) waveforms. The simulator, with UWB outputs from baseband through millimeter wave, was to be used for the purpose of electromagnetic susceptibility testing of legacy military radio, radar, and positioning systems. The ultimate goal of this portion of the Phase I program was the quantitative determination of those UWB parameters (e.g., frequency, power, pulse rate, pulse shape, dithering, etc.) which had the least impact on the operational performance of legacy designs. This describes the development of the MSSI NETEX UWB simulator (BFP1000).     

Millimeter wave radar with clutter measurements

A portable millimeter wave test radar system, also suitable for battery operation, gives interesting possibilities for clutter recordings at hard-to-reach sites. The designed system covers all common radar frequencies from the Ka- to V-bands and enables spatial detection of targets or clutter elements within an adjustable time gate, whereby spatial clutter profiles of rain can be analyzed. The construction allows full operation with non-scanning antennas as well. This is advantageous when measuring temporal RCS variations of selected targets or surface clutter from snow dunes.