Adaptive Doppler Filters Using Simultaneous Estimation of Target Acceleration and Signal to Noise Ratio

In order to obtain target velocity in radar systemswe use Doppler filters. For good target velocity estimation, itis necessary to apply adaptive length window functions. Theoptimum length is primarily influenced by the targetdynamics, expressed in its acceleration, and the signal tonoise ratio of the obtained echo. Using criterion of minimalcumulative error of estimation it have been made many look-up tables with optimum window length for a chosen windowfunction. In order to use these look-up tables it is needed toestimate target acceleration and signal to noise ratio insystem. For the target acceleration estimation it is usedKalman filter and signal to noise ratio is estimated in timedomain using a very simple procedure. At the end it is shownhow an adaptation of the length of used window functioneffect the quality of the velocity estimation. Adaptivni Dopplerovi filtri zasnovani na proceniubrzanja cilja i odnosa signal/šum Papić, V., Đurović, Ž., Kovačević, B.