An enhanced method for the estimation of a Doppler frequency

The enhanced method for the estimation of a Doppler frequency which is dealt with aims at achieving a real time measure of the movements of a vehicule, given an onboard configuration of microwave Radar sensors. The prime idea is that the Doppler frequency can be assimilated to the mean instantaneous frequency of the signal. Then this frequency is estimated using the first moment of a quadratic time-frequency distribution. The enhancing process of the method is involved both in a specific preprocessing of the distribution so as to capture a reliable signal information, and in a weighted rejection of the higher variance components, likely to be meaningless. Simulations, as well as preliminary real tests, show probative results.