Editing Security alarm (section)

===Compact surveillance radar===
[[Compact surveillance radar]] emits microwaves from a transmitter and detects any reflected microwaves. They are similar to microwave detectors but can detect the precise location and a GPS coordinate of intruders in areas extending over hundreds of acres. It has the capability of measuring the range, angle, velocity, direction, and size of the target.  This target information is typically displayed on a map, user interface or situational awareness software that defines geographical alert zones or geofences with different types of actions initiated depending on time of day and other factors. CSR is commonly used to protect outside the fence line of critical facilities such as [[electrical substation]]s, power plants, dams, and bridges.