论文部分内容阅读
研究了UWB信号在室内环境下的传播特性,针对密集多经现象对于UWB信号探测产生的影响,文章提出了一种基于MUSIC的到达角估计方法,并分析了不同信道条件下,估计准确性和分辨力性能变化的原因。仿真结果表明,当信噪比超过一定门限时,估计性能可以趋近CRLB。这种方法通过一定信噪比的代价,降低了多径效应产生的估计影响,对于有较高精度要求的探测定位,具有一定的参考价值。
The propagation characteristics of UWB signal in indoor environment are studied. In view of the influence of dense multiples phenomenon on UWB signal detection, an estimation method of arrival angle based on MUSIC is proposed. The estimation accuracy of UWB signal under different channel conditions is analyzed. The reason for the change in resolution performance. The simulation results show that when the signal-to-noise ratio exceeds a certain threshold, the estimated performance can approach CRLB. This method reduces the estimated impact caused by multipath effects by the cost of a certain signal-to-noise ratio, which is of certain reference value for the probe positioning with higher accuracy requirements.