| 摘要 |
Systems for tracking, containing, and controlling moving objects such as vehicles, boats, airplanes, animals, and people use wireless RF or microwave signals(125) to calculate position within a predefined boundary. The system has antennas(l 15) in a location, and has processing for determining location either on a device on the mobile device(120) or at a base station(l 10). The boundary can be arbitrary and can be learned during a set-up process.
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