TECHNOLOGY IN THE MARITIME DOMAIN. POSITION, TIME, VELOCITY, AND NAVIGATION

The Air Force space squadrons controlling the orbit of global positioning system (GPS) satellites during combat operations during Operation IRAQI FREEDOM were able to improve the navigation accuracy to approximately ______________ meters on a planned basis.

2.2

The global positioning system (GPS) navigational solution depends on having a number of satellites in view from any position on Earth. Based upon this requirement, many satellites have been placed in orbit. Currently, there are approximately ______________ GPS satellites in orbit.

28

The space based navigational system used by U.S. forces for position and timing reference is the global positioning system (GPS). This system relies upon the receipt of signals from at least ______________ satellites simultaneously.

4

Virtually all DOD ______________ are equipped with a global positioning system (GPS) receiver. A. aircraft B. ships C. combat vehicles D. indirect-fire weapon systems

A. aircraft B. ships C. combat vehicles D. indirect-fire weapon systems

Global positioning system (GPS) is extremely useful in air operations. Accurate position, velocity, and time enhances ______________

A. airdrop, air refueling, reconnaissance, and low-level navigation B. search and rescue C. target location, bombing, and weapon delivery D. terminal approach and recovery

Significant advantages offered by global positioning system (GPS) to operational forces are ______________.

ACCURACY, ACCESSIBILITY, AND COVERAGE

NAVSTAR global positioning system (GPS) provides the primary space-based source for U.S. and allied:

ALL THE ANSWERS ARE CORRECT

Space-based position, velocity, time, and navigation systems support strategic, operational, and tactical missions by providing highly accurate:

ALL THE ANSWERS ARE CORRECT

Global positioning system (GPS) is the fundamental system that allows all U.S. forces to establish a ______________, where all forces are geographically referenced correctly and precisely synchronized operations are possible.

COMMOND GRID

Global positioning system (GPS) ______________.

PLAYS A KEY ROLE IN ALMOST ALL MILITARY MISSIONS

The global positioning system (GPS) constellation provides continuous global service. The type of ______________ used and the number and ______________ of the satellites in view determine ______________.

RECIEVER/GEOMETRIC CONFIGURATIONS/ ACCURACY

Although highly accurate navigational information from the GPS constellation is exploitable by adversary forces, it is unlikely the military would alter GPS signal availability to them because ______________.

SIGNAL INTERRUPTION WILL AFFECT THE TREMENDOUS CIVIL DEPENDENCE UPON GPS

Because of ______________ of satellites in the global positioning system (GPS) constellation, a single satellite failure ______________ cause significant degradation of the system

THE NUMBER AND ORBIT LOCATION / WILL NOT

The default navigation grid used by global positioning system (GPS) is the World Geodetic System 1984 (WGS-84).

TRUE

The use of nulling antennas/ filters, and the correct placement of GPS receivers on various platforms all improve jamming resistance

TRUE

Use of hand-held receivers diminishes capabilities. Units relying on hand-held global positioning system (GPS) receivers in areas of ______________ may have diminished GPS capabilities.

DENSE VEGETATION OR SLEEP TERRAIN

Global positioning system (GPS) navigation signals are affected by ionospheric scintillation. Scintillation occurs more often

IN THE MID-LATITUDES (40-60 DEGREES LATITUDE (NORTH OR SOUTH))

Global positioning system (GPS) navigation signals are affected by ionospheric scintillation. Scintillation is a local effect that has daily and seasonal variations. The effects are worse at ______________ and will usually taper off by ______________.

LOCAL SUNSET/ LOCAL MIDNIGHT