Microwave sensors work best on targets moving through the detection zone:
A.
Laterally in relation to the sensor
B.
At high speed
C.
Toward or away from the sensor
D.
At low speed
The Answer Is:
A
This question includes an explanation.
Explanation:
Comprehensive Detailed Explanation:
Microwave sensors, which work by emitting electromagnetic waves and detecting changes in the reflected signal, are most effective when a target moves laterally (side-to-side) across the detection zone. This movement creates the greatest frequency shift (Doppler effect), making it easier for the sensor to detect motion.
Movement directly toward or away (C) causes minimal frequency change and can go undetected.
Speed (B or D) matters, but direction relative to the sensor is the key factor for detection efficiency.
[References:, PSP Study Guide – Intrusion Detection Technologies, POA Manual – Sensor Applications and Placement, ]
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