1-Critically discuss the intrusion vectors of the following detectors:?
a. Microwave beam
b. Passive Infrared
c. Active Infrared
d. Balanced Reed Switch
e. Ladar
125 words for this Q

Threat detection sensors are designed to detect an object moving through a space or point. Such intrusion vectors can be categorised from a zero (0) dimension to four (4) dimensions. Critically discuss each dimension from a sensor perspective, suggesting a typical type of sensor. ?