| 摘要 |
<p>A portable locator or tracking apparatus (12) is provided for continuous location determination of subjects (16, 18) which communicates with a body-worn, non-removable tamper resistant transceiver (20) and a central data-base system (22). The portable tracking apparatus (12) has a Global Position System (GPS) receiver and inertial sensors for determining location, microprocessors for logic and mathematical algorithm processing, memory for programs and data, a wireless transceiver for communications with the body-worn device (20), a wireless transceiver for communicating with the central data-base system (22), an alpha-numeric display for displaying text messages sent to the subject (16, 18), acoustic speaker and microphone for voice and tone messages with the subjects (16, 18), electronic tamper sensors, motions sensors, attitude position sensor, batteries and external connectors for power, recharge, communications and auxiliary antennas.</p> |
