METHOD AND APPARATUS FOR COMMANDING AND CONTROLLING A REMOTE SYSTEM USING DISTRICT LOWER ORBIT SATELLITE COMMUNICATION

摘要

And a programmable transceiver unit for providing a bi-directional communication path between the control center 4 and the remote user 10 at a frequency of 1 GHz or less through the earth low earth orbit satellite 8, Method and apparatus for providing commands and control. The transceiver device comprises a transceiver for communicating with the earth low earth orbit satellite 8; An antenna coupled to the transceiver; And at least one interface capable of communicating with at least one external device (14) located on the remote user side, the transceiver device comprising a signal transmitted to the transceiver via a terrestrial low earth orbit satellite, an internal program of the transceiver, To the satellite 8 in response to an alert or exception status signal generated by the external device 14.