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A closer look at security radar

2021.04.13

Radar stands for “radio detection and ranging.” Applications range from aviation to weather to physical security, where adoption is on the increase. This note provides a comprehensive view of the technology.

What is radar and its advantages
Radar was first invented in the 1940s. The technology shoots a signal to an object and processes the bounced-back signal to determine the distance and velocity of the object. In comparison to other security systems, radar technology has certain advantages, which are summarized as follows.

Versus thermal imaging
Radar compensates for the shortcomings in thermal imaging. “Thermal imaging relies on heat measurements; therefore intruders can be masked by walking near to walls or stone structures that retain heat”,Thermal imaging systems only measure temperature, not distance to the object being measured, and can therefore suffer from false alarms.

Versus video surveillance
Unlike video surveillance, radar entails the transmitting and receiving of radar signals. "Monitoring a specified area can be achieved by transmitting radio waves and detecting the waves that bounce off objects in the field of detection with a receiver. This allows the radar device to detect motion regardless of the light conditions. This is something most visual cameras would struggle with,"

Versus motion sensors
Radar offers advantages over passive infrared-based motion sensors as well. "In intrusion detection, radar is definitely a good choice. It reacts very sensitively on motion, and advanced sensors deliver range and angle information as well so false alarms triggered by bushes in the wind or objects outside the area of interest can be neglected,"

What applications is radar suitable for
1.Wide open space
2.Velocity/distance detection
3.Personal safety

About Us

Shenzhen Alean Security Equipment Co., Ltd. has been a leading manufacturer in security field of China. Our product range includes IR perimeter barrier, smart home alarm system, and burglar alarm products, the products & company are certified by CE,RoHS,CCC and ISO9001:2015.

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