调频广播测距方法探讨

Discussion on ranging methods based on FM broadcasting signals

针对目前电波传播模型对调频广播信号不适应的问题,研究在复杂环境下FM信号的传播模型以及测距方法:通过对现有传播模型的分析,对多方向FM信号进行系统辨识,首先得到一个较为合理的FM信号传播模型,并在此基础上分析得出在一定的距离范围内,FM信号的传播损耗和距离存在稳定的函数关系。研究结果可为基于FM信号的定位导航、频谱检测与管理、FM无源雷达和网络建设等提供相关研究提供参考。

Aimming at the problem that the current radio wave propagation model is not adapt to FM broadcasting signals, this paper studied on the propagation model and ranging method of FM broadcasting signals under complex environment： the existing propagation models were analyzed for the system identification of multi-direction FM broadcasting signals, and a reasonable propagation model of FM broadcasting signals was got, then it could be shown that within a certain distance the propagation loss of FM signal and the distance have a stable function relationship. The result could provide a reference for the related research on navigation and positioning, the spectrum detection and management, the passive radar and network construction of FM broadcasting signals.