基于信标导引的目标方位估计方法

A Target Bearing Estimation Method Based On Beacon Guidance

摘要:

基于准确测量目标方位进而快速实施救援的需要，采用无线信标、电子磁罗盘和卫导组合技术，设计了一种集发射端信标信号全向发射、接收端信标信号定向接收、数字化声谱处理、干扰野值剔除、信标方位精确测量、信标距离概略估计等功能于一体的户外搜救导引系统。并研究分析了一种基于信标导引的目标方位估计方法，该方法通过接收远程、配属在合作目标端信标发射的声波脉冲信号并进行FFT变换，进而通过分析频谱的特征参数来对目标的方位进行准确测量，对目标的距离进行概略估计；测试结果表明该方法比较适合郊区和城市等户外环境中对合作目标进行快速探测搜救和远程监视的需要。

Abstract:

Based on the need of accurately measuring the orientation of the target and quickly implementing rescue, the combined technology of radio beacon, electronic magnetic compass and satellite navigation is adopted, an outdoor search and rescue guidance system is designed, which integrates the functions of omni-directional transmitting of beacon signal at transmitter, directional receiving of beacon signal at receiver, digital acoustic spectrum processing, jamming outliers elimination, precise bearing measurement of beacon, and rough estimation of beacon distance. A method of target position estimation based on beacon guidance is studied and analyzed. The method receives the acoustic pulse signal transmitted by the beacon at the cooperative target and performs FFT transform, by analyzing the characteristic parameters of the spectrum, the azimuth of the target can be measured accurately and the distance of the target can be estimated roughly, the need for rapid detection, search and rescue, and remote surveillance of cooperative targets.