| 主权项 |
1. A recovery system with repeating communication capabilities for facilitating recovery of a vehicle equipped with a locating unit, the system comprising:
a central station configured to send a first message;
at least a first communication tower including a first remote transmitting unit, wherein, responsive to the first message from the central station, the first remote transmitting unit transmits a second message to activate the locating unit in the vehicle; andat least a second communication tower including a second remote transmitting unit, the second remote transmitting unit including:
a receiver which receives the second message for activating the locating unit of the vehicle from the first remote transmitting unit in the at least first communication tower,a controller configured to process the second message, anda transmitter, responsive to the second message, for transmitting a third message to activate the locating unit in the vehicle,wherein the controller is programmed to:
transmit the third message only upon receipt of two or more instances of the second message,transmit the third message only for a predetermined time period, andignore any second message received by the receiver having a signal strength below a predetermined signal strength. |
