Calculation of Doppler spectrum for simultaneous time varying conditions

In this work, the estimation of Doppler spectrum for simultaneous time varying conditions is analyzed. Based on the application of discretized radar cross section equations in a finite element approach, an in-house 3D code has been implemented in order to analyze the Doppler spectrum of objects with linear as well as rotation movement. Simulation results for the case of a helicopter with blade movement as well as rectilinear displacement are presented, where the combined effect on the resulting Doppler spectrum can be described.