Impact of multipath in a hybrid TDoA/DoA sparse radiolocalization framework

In this paper, we analyze a sparse framework for hybrid radiolocalization of multiple emitters in the presence of a simple multipath channel. The scenario under consideration includes multiple non-collaborative targets and multiple sensors with flexible TDoA/DoA capabilities. Scatterers surrounding the target nodes and the sensor nodes are assumed. The localization is performed as a joint block-sparse recovery problem. Partial combinations of hetereogeneous measurements provided by the sensors are performed in the fusion center. This approach has proven to provide a similar performance when compared to the fully joint recovery approach, decreasing the computational complexity of the algorithm. In this paper, our aim is to analyze the impact of simple multipath and some of the channel physical parameters, as the radio of the clusters and the number of scatterers, in the performance of the algorithms.