基于机会辐射源的弹载无源探测关键技术研究
发布时间：2018-10-05 13:34
【摘要】：基于机会辐射源的无源探测技术具有先天的抗反辐射导弹、反隐身、反低空突防和抗电子干扰的"四抗"能力,因而在现代战场中具有极大的应用价值。基于机会辐射源的弹载无源探测技术鲜有报道,本文主要从机会辐射源的选取、杂波干扰抑制和目标定位三个方面对该技术的关键问题进行研究,概括如下:(1)首先深入研究现有无源探测系统模型,结合弹载平台在高空高速运动、单次工作横跨区域范围广、工作地点不固定的特点,以海面大型船只作为目标为例,建立了基于机会辐射源的弹载无源探测模型,并确定了本文研究的关键技术内容;(2)针对机会辐射源选取,确立了其选取的原则:覆盖范围要广、辐射能量要大、波形特征要好;通过上述原则弹载无源探测器选定全球覆盖的BDS信号作为辐射源,通过0.5232s积分即实现对100公里远处船只目标进行探测,并且获得较好的分辨力;(3)针对弹载无源探测系统的杂波干扰抑制,分别提出了基于信号重构的直达波干扰抑制方法和基于奇异值分解的海杂波抑制方法:前者通过对直达波信号进行重构提纯,在直达波信噪比为-1dB的条件下将直达波干扰信号成功抑制;后者通过对目标信号构造的Hankel矩阵进行奇异值分解、跟踪和归零即完成对海杂波的抑制,成功实现目标探测;(4)针对弹载无源定位,提出了以三发单收TDOA定位为主、单发单收DOA-TDOA联合定位为辅的定位方式:利用GDOP对两种定位方式的定位精度进行分析;仿真结果显示,在一般条件下,对100公里远的目标上述定位方式分别最高可获得920m和2km的定位精度。基于MATLAB软件完成了基于BDS的弹载无源探测仿真软件系统,通过该软件在给定条件下对弹载无源探测系统进行仿真实验,结果表明,弹载无源探测系统以BDS信号作为机会辐射源对目标进行探测与定位是可行的。
[Abstract]:The passive detection technology based on opportunistic emitter has innate anti-radiation missile, anti-stealth, anti-low-altitude penetration and anti-electronic interference, so it has great application value in modern battlefield. Passive detection technology based on opportunity emitter is rarely reported. This paper mainly studies the key problems of this technology from three aspects: the selection of opportunity emitter, the suppression of clutter interference and the location of target. The following are summarized as follows: (1) the existing passive detection system models are studied in depth. Combined with the high altitude and high speed motion of the projectile platform, the single work spans a wide range of areas, and the working place is not fixed. Taking large vessels on the sea as an example, The passive detection model of projectile based on opportunity emitter is established, and the key technical contents of this paper are determined. (2) aiming at the selection of opportunity emitter, the selection principle is established: wide coverage, large radiation energy, good waveform characteristics; Based on the above principle, the BDS signal with global coverage is selected as the emitter source, and the ship target at a distance of 100km is detected by 0.5232s integral. And good resolution is obtained. (3) clutter interference suppression for missile passive detection system. A direct wave interference suppression method based on signal reconstruction and a sea clutter suppression method based on singular value decomposition are proposed. The direct wave interference signal is successfully suppressed when the SNR of the direct wave is -1dB, and the latter performs the suppression of sea clutter by the singular value decomposition of the Hankel matrix constructed by the target signal, tracking and returning to zero. (4) aiming at passive location of projectile, this paper puts forward a positioning method, which is based on three-send single receiving TDOA location, with single send and single receiving DOA-TDOA as auxiliary positioning. The positioning accuracy of two kinds of positioning methods is analyzed by using GDOP, and the simulation results show that the positioning accuracy of the two positioning methods is analyzed, and the simulation results show that the positioning accuracy of the two kinds of positioning methods is analyzed. Under general conditions, the positioning accuracy of 920m and 2km can be obtained respectively for the target with 100km distance. Based on MATLAB software, the simulation software system of missile passive detection based on BDS is completed. The simulation experiment of passive detection system is carried out under given conditions. The results show that, It is feasible to detect and locate targets with BDS signal as an opportunity emitter in missile passive detection system.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN957.51
本文编号：2253582
[Abstract]:The passive detection technology based on opportunistic emitter has innate anti-radiation missile, anti-stealth, anti-low-altitude penetration and anti-electronic interference, so it has great application value in modern battlefield. Passive detection technology based on opportunity emitter is rarely reported. This paper mainly studies the key problems of this technology from three aspects: the selection of opportunity emitter, the suppression of clutter interference and the location of target. The following are summarized as follows: (1) the existing passive detection system models are studied in depth. Combined with the high altitude and high speed motion of the projectile platform, the single work spans a wide range of areas, and the working place is not fixed. Taking large vessels on the sea as an example, The passive detection model of projectile based on opportunity emitter is established, and the key technical contents of this paper are determined. (2) aiming at the selection of opportunity emitter, the selection principle is established: wide coverage, large radiation energy, good waveform characteristics; Based on the above principle, the BDS signal with global coverage is selected as the emitter source, and the ship target at a distance of 100km is detected by 0.5232s integral. And good resolution is obtained. (3) clutter interference suppression for missile passive detection system. A direct wave interference suppression method based on signal reconstruction and a sea clutter suppression method based on singular value decomposition are proposed. The direct wave interference signal is successfully suppressed when the SNR of the direct wave is -1dB, and the latter performs the suppression of sea clutter by the singular value decomposition of the Hankel matrix constructed by the target signal, tracking and returning to zero. (4) aiming at passive location of projectile, this paper puts forward a positioning method, which is based on three-send single receiving TDOA location, with single send and single receiving DOA-TDOA as auxiliary positioning. The positioning accuracy of two kinds of positioning methods is analyzed by using GDOP, and the simulation results show that the positioning accuracy of the two positioning methods is analyzed, and the simulation results show that the positioning accuracy of the two kinds of positioning methods is analyzed. Under general conditions, the positioning accuracy of 920m and 2km can be obtained respectively for the target with 100km distance. Based on MATLAB software, the simulation software system of missile passive detection based on BDS is completed. The simulation experiment of passive detection system is carried out under given conditions. The results show that, It is feasible to detect and locate targets with BDS signal as an opportunity emitter in missile passive detection system.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN957.51
【参考文献】
相关期刊论文 前10条
1 吕小永;王俊;焦雪;;外辐射源雷达中基于八单元均匀圆阵天线的测角方法[J];电子学报;2015年10期
2 万显荣;梁龙;但阳鹏;饶云华;;移动平台外辐射源雷达实验研究[J];电波科学学报;2015年02期
3 卢开旺;杨杰;张良俊;;GSM辐射源雷达直达波信号提取技术[J];兵工学报;2014年02期
4 王志纲;董鹏曙;吴琼;;飞艇载无源雷达的外辐射源选择[J];雷达科学与技术;2014年01期
5 万显荣;;基于低频段数字广播电视信号的外辐射源雷达发展现状与趋势[J];雷达学报;2012年02期
6 ;Study of SAR imaging with COMPASS signal[J];Science China(Physics,Mechanics & Astronomy);2011年06期
7 范梅梅;丁小峰;廖东平;赵莹;;基于机会辐射源的被动雷达系统研究现状[J];电光与控制;2010年10期
8 范梅梅;廖东平;丁小峰;;基于北斗卫星信号的无源雷达可行性研究[J];信号处理;2010年04期
9 王腾朝;杨靖雯;赵杭生;马登军;;“沉默哨兵”系统及其核心技术[J];军事通信技术;2009年04期
10 徐世友;陈曾平;;机会照射源雷达系统中外辐射源的选择[J];现代雷达;2007年10期
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