Simulation for Doppler signal Periodogram Spectral estimation methods

With the rapid development of modern intelligent traffic, the speed-testing radar becomes a kind of essential equipment, which measures speed through the acquisition of the moving target signal frequency deviation according to Doppler principles. Traditional method uses analog filtering, whose measurement accuracy is low and the measured speed is slow. Obviously, it´s difficult to meet the need of the modern intelligent transportation management. Speed radar signal processing generally uses the power spectrum estimation method. Periodogram Spectral estimation (using Hamming window periodogram method) considers for different signal to noise ratio of the data spectral estimation, and finally receives the largest frequency error to meet the system requirements for measurement accuracy.