Simulation Approach for Spatio-temporal Two-dimensional Ground Clutter Based on DEM Data

This paper proposes a simulation approach of spatiotemporal two-dimensional characteristics for ground clutter data is proposed based on Digital Elevation Model (DEM) data and multi-channel airborne phased array radar. Firstly, the topographic factors are calculated by DEM data, combining with geomorphological classification. Then, the radar equation and analytical geometry are utilized to calculate the clutter power and scattering cross section of each classified cell. Secondly, the transmit and receive antenna patterns along with clutter correlation sequences are determined, resulting in the generation of multi-channel spatio-temporal two-dimensional ground clutter data. In addition to the distance-doppler power spectrum validation method, the spatio-temporal power spectrum validation method is combined with the real scene, to verify and analyze the simulation results. The results demonstrate that the constructed clutter model using this method is consistent with the actual scenarios encountered by airborne radar.