A new approach to Doppler filter adaptation in radar systems

This paper presents one way to adaptation of Doppler radar filters. Doppler filters use window function in order to estimate the target velocity. The window function length can be adapted depending on estimated target acceleration and estimated signal to noise ratio in the system. Kalman filter is used for estimation of target acceleration. Signal to noise ratio is estimated using a procedure based on parametric methods of spectral analysis. A new adaptive Doppler-Kalman structure has been presented and efficiency of approach to target velocity estimation is proven by computer simulations.