TECHNOLOGY IN THE MARITIME DOMAIN, SATELLITE COMMUNICATIONS Flashcards

 

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Requirements for SATCOM service worldwide significantly exceed the capacity of current MILSATCOM systems.

TRUE

Satellite communications are often the only means of providing critical beyond line of sight communications.

TRUE

Wideband satellite communications support ______________.

ALL THE ANSWERS ARE CORRECT

It is impossible for a unit to lose their primary communication link with the military strategic and tactical relay system (MILSTAR) satellite network.

FALSE

Since most communications satellites are in geosynchronous orbit, the region of the world which receives least coverage is the ______________ region.

POLAR

MILSTAR stands for

MILITARY STRATEGIC AND TACTICAL RELAY SYSTEM SATELLITE NETWORK

Protected satellite communications permits the use of smaller antennas that increase its mobility, enabling wider use of submarine, airborne, and other mobile terminals

TRUE

Satellite Communications:

COLLECTIVELY PROVIDE AN ESSENTIAL ELEMENT OF NATIONAL AND DEPARTNMENT OF DEFENSE (DOD) COMMUNICATIONS WORLDWIDE.
PERMIT INFORMATION TO TRANSFER FROM THE HIGHEST LEVELS OF GOVERNMENT TO THE THEATER TACTICAL LEVEL FOR ALL MATTERS TO INCLUDE OPERATIONS, LOGISTICS, INTELLIGENCE, PERSONNEL, AND DIPLOMACYL

The communication bands in which the military operates satellite communication systems are

UHF, SHF, EHF, COMMERCIAL

Heavy solar activity ______________.

CAN DISRUPT SATELLITE COMMUNICATIONS FOR SHORT PERIODS OF TIME, CAUSING COMMUNICATIONS OUTAGES IN EXTREME CASES

Narrowband Satellite Communications supports ______________ data rates for both mobile and fixed users by providing access on a single dedicated channel or on a demand assigned multiple access channels.

SECURE VOICE AND DATA TRANSMISSION AT RELATIVELY LOW

All radio receivers, including satellite systems, are susceptible to jamming and interference.

TRUE

Satellite communications provide ______________ coverage enabling military leaders to maintain ______________ and convey their intent to the operational commander.

NEAR-GLOCAL / STRATEGIC SITUATIONAL AWARENESS

SATCOM in the Ku- and Ka- bands, as well as EHF systems, are particularly affected by rain (the higher the frequency, the greater the effect). Rain not only degrades the signal but, if heavy enough, can cause a complete outage

TRUE

Significant advantages of satellite communication systems over terrestrial communication systems are

GLOBAL COVERAGE, SECURITY, FLEXIBILITY

Military units must be able to communicate over long distances with

ALL THE ANSWERS ARE CORRECT

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