一种基于压缩感知的同频多辐射源数量估计及定位方法

A Number Estimation and Location Method of Multiple Radiation Sources Based on Compressive Sensing

本文提出了一种基于压缩感知的多辐射源数量估计及定位方法,能够较为准确地对未知的多个无线电辐射源的数量估计并定位.方法通过移动监测,在区域内部分位置上获取场强值.在对场强值进行预处理后,利用目标源的空间稀疏性,结合传播模型及压缩感知方法进行粗定位,用较少场强值重构计算出区域内未知同频辐射源数量.在此基础上进行二次定位确定辐射源的位置,提高了定位的准确度.通过对算法进行仿真与实验验证,证明了本文方法的有效性.

A location method based on compressive sensing about multi radiation source is proposed,which can accurately estimate the number of the unknown multiple radiation sources and locate them.In this method,the field strength values are obtained in the partial position of the determined region by mobile monitoring.Due to the spatial sparsity of the target source,the compressive sensing method combined with the propagation model is used for coarse location after the preprocessing of the field strength value.In this way,the number of unknown radiation sources in the region is reconstructed with less field strength values.On this basis,in order to improve the positioning accuracy,genetic algorithm is used to locate the position of the radiation source in second positioning.Through the simulation and experimental verification of the algorithm,it is proved that the method is effective.