针对多径衰落信道下BOC(二进制偏移载波)信号的捕获问题，通过对多径衰落信道建模，运用目前较优越的捕获算法对各信道下的捕获性能进行比较。结合莱斯因子K、多径径数L以及多径延迟，分析了多径衰落信道对BOC信号捕获产生的影响。理论分析和仿真结果表明，K值越大，捕获函数峰值越大，捕获性能越好；L值越小，出现副峰越少，捕获性能越好。

This paper discusses the acquisition of BOC signals in multipath fading channels. It first compares the acquisition performances in various channels using the currently superior acquisition algorithm on the basis of the models of multipath fading channels. Then it analyzes the impacts of the channels on the acquisition performances in connection with Rice factor K, multipath routing number L and multipath delay. Theoretical analysis and simulation results show that the larger the Rice factor K, the larger the acquisition function peak value and the better the acquisition performance, while the smaller the multipath routing number L, the less the side peaks and the better the acquisition performance.