The INMARSAT system provides priority access to satellite communications channel in emergency situations, each ______ is capable of initiating a request message with distress priority.
The maritime satellite system has three major components: ______.
The ______ is the nerve center of INMARSAT system, and it is located in the INMARSAT headquarters' building in London.
The present INMARSAT uses ______ working satellites.
Which of the following is right? ①There is a NOC in each INMARSAT ocean region;②There is a NCS in each INMARSAT ocean region; ③There is a LES in each INMARSAT ocean region.
There is actually an overlapped area of three ocean regions somewhere in the world. It is an overlap of ______ and ______.
INMARSAT is the abbreviation of ______.
In the INMARSAT sysem the service code 00 means ______.
A radio link between a transmitting earth station and a receiving earth station through one station, which comprises one up-link and down-link，is called ______.
The ground segment of INMARSAT consists of ______.
The satellites over the major ocean regions cover the globe ______.
The INMARSAT system utilizes ______ satellites positioned above four ocean regions.
The satellite and support facilities operated by INMARSAT are basedon ______ operational regions.
The satellites in the INMARSAT system virtually cover the globe as far as about75° ______ the polar regions.
There are ______ operational satellites in the INMARSAT system covering the whole globe except the polar regions.
