Cell Phone Radar - Concept of Operation --------------------------------------- The basic concept behind how the revolutionary Cell Phone Radar, CELLDAR(TM), system operates is described below. Using Cell Phone Transmissions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The Cell Phone Radar system is a passive system, working by using existing transmissions made by digital cell phone base stations. When a target object enters the detection region, these cell phone transmissions are reflected by it and are detected at one or more Cell Phone Radar systems. Acoustic Sensors Augment Detection ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In addition to the reflected cell phone base station transmissions, the Cell Phone Radar also has acoustic sensors to detect noise emissions from the target object. This provides additional information to assist in the positioning of the target object. Processing Cell Phone Radar Data ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The data collected by the Cell Phone Radar systems is then sent back in real-time to a Central Control System via a communications network. Here the data is processed to determine the position and speed of the target object.