作者: Keith Chisholm Brown
DOI:
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摘要: There is disclosed a locating or surveillance system for monitoring the instantaneous position of mobile object, such as truck, at central base station. The comprises receiving (10, 11) to be located station, navigation unit (12) on oject and operable automatically determine object by reference orbiting satellites land based transmissions beacons, radio telephone type transmitter (16) connected (12), being transmit signals which will received station are indicative determined (12).