Abstract:

In order to analyze the generating mechanism of turbulent flow of airborne radar and the variational laws with dimension and without dimension, the three dimensional zero mean Gaussian noises are produced by using the threedimensional symmetric characteristics of fast Fourier transform (FFT). Combined with the Von Karman model the space threedimensional turbulent flow model is produced and the airborne radar turbulence signal processing algorithm is presented. The turbulence scale and turbulence intensity are considered in turbulent flow simulation. The simulation results show that the threedimensional turbulent flow is suitable for the actual situation, which can meet the actual flight realtime simulation. In addition, the variational law of turbulence with dimension is basically identical with one which is without dimension, but its amplitude of fluctation is larger than the latter.