Doppler radar and postprocessing techniques for small area surveillance

In this paper the use of Doppler signatures for human motion detection is presented. This can be of interest during search and rescue missions where visibility can be poor or even absent. Human movements give rise to specific Doppler frequencies. Their corresponding speeds can be exploited for recognition and can be visualized by means of reassigned spectrograms. A simulation tool is developed and validated by measurements. Scenarios with increasing complexity are treated.