Monitoring system for a doppler transceiver

Doppler transceiver, comprising:

• a transmitter unit and a receiver unit which utilize a signal path, said transmitter unit includes at least one antenna, and, said receiver unit includes at least one antenna;
• a mixer unit;
• a modulation unit integrated between said at least one antenna of said transmitter unit and said at least one antenna of said receiver unit, said modulation unit is coupled to at least one antenna of said transmitter unit and said at least one antenna of said receiver unit;
• a processing unit triggering and controlling said modulation unit by a link independent of said signal path.

Method for monitoring the integrity of a Doppler transceiver, said Doppler transceiver includes a transmitter unit, a receiver unit, at least one mixer unit, a processing unit, and, a signal transmitted from said transmitter unit, comprising the steps of:

• transmitting, partially, said transmitted signal to a modulation unit;
• triggering, using said processing unit, said modulation unit and modulating said transmitted signal according to defined parameters;
• transmitting said modulated signal back to said receiver unit;
• mixing said received signal and said transmitted signal in said mixer unit to obtain an IF signal;
• and,
• processing said IF signal in said processing unit and comparing said IF signal to an expected value to determine when said transceiver system is functioning correctly.