An apparatus and method for varying the sampling frequency of a Doppler effect device, based on environmental conditions, is described comprising: (i) a transmitter for transmitting energy into a protected area; (ii) a receiver for receiving energy reflected from the protected area and for transforming...http://www.google.fr/patents/US5684458?utm_source=gb-gplus-shareBrevet US5684458 - Microwave sensor with adjustable sampling frequency based on environmental conditions
Microwave sensor with adjustable sampling frequency based on environmental ...
