摘要
无源定位技术相对于有源定位技术具有作用距离远、反隐能力强的优越性,是现代一体化防空系统、隐身目标远程预警系统的重要组成部分。对于有规律的机械扫描雷达,如圆扫、扇扫,其波束扫过不同侦察站形成的波束时间差称为波束时差。研究了波束时差结合单站测向的定位体制,对算法原理、推导、误差分析、仿真测试进行了全方位的描述。相比于三站波束时差定位和时差定位,该算法对整个系统要求较低,易于工程化实现。通过对定位算法进行仿真得到GDOP(Geometric Dilution of Precision)图,并对运动目标进行了场景模拟。仿真实验表明,该定位体制相较交叉定位具有较高的定位精度,通过波束时差与现有定位体制的结合,为工程应用及定位体制的改进奠定了基础。
Compared with active positioning technology,passive positioning technology has the advantages of long operating distance and strong anti-stealth ability.It is an important part of modern integrated air defense system and long-range warning system for stealth targets.For regular mechanical scanning radar,such as circular scan and sector scan,the beam time difference formed by the beam scanning through different reconnaissance stations is called beam time difference.The positioning system of beam time difference combined with single station direction finding is studied.The algorithm principle,derivation,error analysis and simulation test are described.Compared with three station beam time difference location and time difference location,this algorithm has lower requirements on the whole system and is easy to be implemented in engineering.Geometric dispersion of precision(GDOP)map is obtained by simulation of the positioning algorithm,and scene simulation is performed for moving targets.The simulation results show that the positioning system has higher positioning accuracy than cross positioning.Through the combination of beam time difference and existing positioning system,a foundation for engineering application and improvement of positioning system are laid.
作者
余昊
王尚平
张东
YU Hao;WANG Shangping;ZHANG Dong(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China)
出处
《电子信息对抗技术》
北大核心
2023年第3期14-18,共5页
Electronic Information Warfare Technology
关键词
时差定位
无源定位
波束时差
单站测向
场景仿真
time difference location
passive location
beam time difference
direction finding
scene simulation
