Study on echo simulations of spaceborne millimeter-wave cloud profile radar

Abstract

This paper studies echo simulations of spaceborne millimeter-wave cloud profiling radar (CPR). It employs the cloud reflectivity data from 94GHz CloudSat CPR to construct the real scene and the cloud scattering model. In the simulation, the radar model, the relative motion model, the cloud scattering model, the scattering particle motion model and the atmospheric propagation and attenuation model are established considering the characteristics of the millimeter-wave cloud radar. The US standard atmosphere mode is adopted to calculate the profile of atmospheric attenuations at the different heights. The System Tool Kit (STK) is used to generate the relative geometry and movement. Finally, all the aforementioned models are combined to construct the radar echoes according to the Doviak-Zrnic meteorological echo formulas. The simulation results are verified by comparing input simulation true values and experimental inversion values, and it shows a good consistence.