Nathanson Award to Marina Sabrina Greco

Dr. Maria Sabrina Greco was awarded the 2007 Fred Nathanson Memorial Radar Award "for contributions to signal processing, estimation, and detection theory."     

雷达吸波材料重量估算

采用雷达吸波材料是军用飞机隐身设计的重要技术措施之一，由此而带来的飞机重量变化在型号研制中颇受关注。这里分别简要地说明了磁性吸波材料、介电吸波材料和复合结构型雷达吸波材料的组成及其基本原理，并给出了这几种常用雷达吸波材料的重量估算分析方法。     

People's Republic of China Cumulative Index on Radar Systems (FirstEdition) 1978-87

This bibliography of Chinese radar papers was compiled by the PLA Air Force Radar Institute under the sponsorship of the China Institute of Electronics Radar Society. It covers the period from 1978 through 1987 and was prepared under the supervision of the Vice Chairman of the CIE Radar Society. It follows the format of the IEEE AES Cumulative Index on Radar Systems. Entries are listed chronologically under each subject heading. All papers listed have been released for foreign acquisition. Papers presented at the various conferences listed are written in English; however, others are generally in Chinese, although an abstract written in English is provided by some of them     

基于状态方程的雷达目标航迹模拟方法

雷达目标模拟航迹产生的数据是进行各种雷达数据处理研究的前提。文章提出了一种基于状态方程的航迹模拟方法,该方法是利用目标运动的状态方程及最优控制理论来进行航迹模拟,最大的优点在于产生的数据符合目标运动的特性,更真实地接近空中目标实际运动的轨迹。仿真实验结果表明了该算法的有效性。     

弹道导弹助推段拦截融合跟踪算法研究

针对空基雷达数据率低的特点,提出一种新的基于雷达/红外成像的机动目标跟踪信息融合算法.建立了弹道导弹目标机动模型和雷达/红外成像导引头观测方程,以动能拦截弹红外成像导引头数据更新时间为基准,以空基雷达采样周期为间隔对距离信息进行实时修正,推导了雷达/红外成像复合制导信息融合跟踪扩展卡尔曼滤波算法.仿真结果表明,该算法融...     

基于传感器协同技术的雷达搜索空域研究

多传感器协同是当代先进战斗机的重要技术特征.利用数据链、电子战系统、红外搜索跟踪系统提供的目标信息引导雷达对指定空域进行小范围搜索,可以增加雷达波束目标驻留时间,提高雷达探测距离.本文给出了在外部目标信息引导下雷达搜索空域确定方法,对各种传感器的引导精度进行了分析,确定了雷达相应的搜索空域.     

雷达散射截面面积对发现概率的影响

在深入分析了影响飞机生存力的几种因素的基础上,通过理论推导,建立了雷达输入端信噪比与发现概率及雷达散射截面面积与信噪比之间的关系,计算了雷达散射截面面积对发现概率影响.并在Matlab的环境下进行了数学仿真,仿真结果表明:当信噪比落在区间[5.6,12.5]内,发现概率随着信噪比的降低而陡降.在没有完全掌握敌方预警雷达参数的情况下,通过假设定量的给出调整雷达散射截面面积的最佳范围.     

飞行器表面电磁缺陷及雷达吸波材料应用

从飞行器表面电磁特性和电磁缺陷分析入手,就如何使用雷达吸波材料进行了探讨,提出了采用雷达吸波材料或特种良导电材料,针对电磁缺陷进行修复的雷达吸波材料应用思路。该方法可减少雷达吸波材料的使用量,从而减轻飞行器重量,提高其性能,降低成本,改善维修性。并进行了试验验证。     

雷达天线系统隐身方法研究

以飞行器为载体的雷达天线系统隐身,是飞行器隐身研究的一项重要课题,文中从时域、空域、带外及正交极化、带内同极化四个方面探讨了雷达天线系统隐身的基本原理。     

TALONS 95 GHz radar sensor for autonomous landing guidance

Ground tests of the TALONS (tactical avionics for low-level navigation and strike) 95-GHz radar sensor are reported. Radar backscatter data were taken for a runway/taxiway system at realistic depression angles in various weather conditions to determine the effects of precipitation and fog. The data were analyzed and utilized to produce radar imagery. Radar cross-sections of several tactical targets were also measured. It was found that the conditions encountered during the test program were virtually transparent to 95-GHz energy at the detection ranges required for landing guidance     

调频连续波SAR成像算法研究

机载遥感微波成像雷达在地球观测特别是在城市应用中起着非常重要的作用,现在人们对体积小、重量轻、成本效益高、分辨率高的成像雷达越来越关注。调频连续波(FM-CW)技术和SAR相结合的调频连续波合成孔径雷达应运而生。论文详细分析了FM-CW SAR的成像过程,提出了去除相位残余的算法,并给出仿真结果。通过仿真可以看出,调频连续波合成孔径雷达具有较好的空间分辨力。     

基于层次状态机的雷达显控技术研究

鉴于雷达显控系统的复杂度不断提升,各种状态相互交叉,相互影响,导致软件结构的设计也越来越复杂,不便于设计和后期的维护.本文采用了基于层次状态机的方法,将雷达显控系统的各种状态按照层次进行分类,针对不同的层次设计出其状态转换图,使编程更加简化,层次更加分明,同时可减少代码占用空间,提高系统的实时性能.     

直管斜切式方转圆进气道的电磁散射特性及抑制技术的实验研究

从进气道的雷达散射截面着手,通过实验研究了直管斜切式方转圆进气道在各种状态下的电磁散射特性,分析了终端、攻角对其电磁散射特性的影响,并进一步提出了该型进气道的雷达截面减缩措施,研究了吸波材料贴敷长度、贴敷位置以及消波器等对雷达截面减缩效果的影响。为有效改善该型进气道的电磁散射特性提供了技术依据。     

腹部进气道电磁散射特性及RCS减缩方法研究

对建立的腹部S型进气道及前机身模型,采用多层快速多级子方法计算雷达散射截面,研究了进气道唇口斜切方式、上下唇边锯齿化、S型弯道长度、等直段安装吸波导流环和前机身形状对腹部进气道头向RCS的影响,并分析进气道与前机身的耦合散射特性。通过计算进气道参数改变前后的电磁散射特性,找出影响腹部进气道头向雷达散射截面的主要因素和RCS减缩方法,并对各种减缩方法的减缩效果作了对比分析。研究结果为腹部进气道的头向RCS减缩提供了技术依据。     

Fast coating analysis and modeling for RCS reduction of aircraft

In order to fast analyze the aircraft Radar Cross Section(RCS) and accurately reduce it with Radar Absorbing Materials(RAM), a comprehensive analysis method based on Higher-Order Method of Moments(HOMOM), termed Locally Coating Method(LCM), is proposed in this paper. There are two steps to fast analyze coatings for RCS reduction in this method: analyze the RCS of various parts before coating the aircraft; model a coating over the aircraft and analyze the wave absorbing effect of it. The aircraft RCS is calculated as a whole but analyzed in various parts by LCM, and thus the RCS contribution of different parts can be compared without disturbing the current continuity. A model expansion algorithm is also presented in LCM to model absorption coatings on specified aircraft parts for later stage RCS calculation of the coated aircraft.     

Benefits and challenges of Integrated Sensor Systems

Projection of avionics system costs shows unacceptable escalation as a percentage of flyaway cost. Time sharing of RF modules between Radar, EW and CNI offers savings. The Air Forces' PAVE PACE program defined the benefits and initial architecture approaches. From this, an optimum Integrated Sensor System (ISS) design was defined that reduces the life cycle cost of the fleet of vehicles using the common modules. The ISS program will design, build and test modules to prove the approach. Challenges to overcome include system complexity, real time control, test and calibration, and diagnostics. The most stressing requirements were determined by analyzing requirements for Radar, EW and CNI. Open interface specifications and module partitioning were developed that can meet all the requirements     

一种导航精度的综合评估表示方法

为了评估表示导航系统精度, 提出一种基于雷达图的综合评估表示方法, 包括速度、位置、姿态精度的评估表示。雷达图具有可视化的优点, 便于进行优劣分 析、综合评价,因此可以直观地将导航系统的精度表达出来。以捷联惯导系统和全球卫 星定位系统的组合导航系统精度对比分析为例进行研究,采用雷达图的方式取得了较好 的对比分析效果。将雷达图应用在组合导航系统的精度评估中,可简明直观地考核其精 度和性能,这为导航系统精度评估表示提供了一种有效的手段。     

2005 M. Barry Carlton Award [Society News]

The winners of the 2005 M. Barry Carlton Award are Yanwei Wang, Xi Li, Yijun Sun, Jian Li, and Petre Stoica, for their paper, "Adaptive Imaging for Forward-Looking Ground Penetrating Radar." The paper appeared in the July 2005 issue.     

Radar into the next millennium

The 1999 Radar Conference banquet address, in which an attempt is made to predict future developments in radar, is presented     

The early history of pulse compression radar-the development ofAN/FPS-17 coded-pulse radar at Lincoln Laboratory

The development of pulse compression radar at MIT Lincoln Laboratory is related on the basis of the author's personal recollections. He describes the formation of the Radar Techniques Group, the development of the concept, the first system constructed, and the selection of an appropriate code for the transmitted waveform