CommSense: Radar system using existing communication infrastructure to sense the environment

The effort to use existing communication systems as radars and vice versa has been there since the last great war. The current work describes a new way to use the existing communication systems to sense the change in the environment. This kind of radar, named as CommSens by the author, can be used in tasks like crop growth monitoring, disaster monitoring, sea state monitoring etc. The key to this technology lies in the use of pilot signal in the communication signal frames to monitor the channel and thereby estimate the change in the channel state.