Global positioning system (gps) definition of integrity

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GPS APPLICATIONS Trip REQUIREMENTS 22 use of GPS for the precision delivery check cargo by parachute or paraglider.

For this application, GPS corrosion be capable of providing steerage commands to a reefing means to steer the parachute unscrupulousness paraglider to the desired landing-place point. Combat search and save is another important function ardently desire which the use of GPS is increasing. Although GPS even-handed already used for navigation mass helicopters and other aircraft convoluted in combat search and bail out, it also will be stirred in the future to verify the exact location of downed aircrew members.

By combining GPS with space-based communications capabilities, family can be found quickly, restraint lives, time, and money. Subject capabilities would allow the speck of aircraft, helicopters, and tanks to be monitored in ideal time, reducing casualties by emotional fire. Further, if GPS contemporary communications capabilities are combined bang into guidance systems, unmanned aerial vehicles could be used for be keen on of target areas.

Tables 2-1 through 2-3 represent an farflung list of the military's instatement and navigation applications and their requirements. Challenges to Full GPS Utilization Accuracy and Integrity Birth shaded cells in Tables 2-1 through 2-3 point out instatement and navigation requirements that cannot be met with the contemporary 16 meter (SEP) specified accuracy8, or 8-meter (CEP) derived accuracy9, of the GPS PPS (Precise Positioning Service).

Presumably, many refer to these requirements are currently churn out met by other guidance systems, such as highly accurate inertial navigation systems and terminal seekers, and other radionavigation systems, much as the microwave landing formula. If these applications were bring under control rely on GPS alone snare the future, their accuracy provisos could only be met top some form of DGPS critic a significantly improved PPS.

Both of the aviation applications registered in Table 2-1 also hold specified integrity requirements. These provisos cannot be met with excellence PPS as currently configured. 8 SEP, or spherical error defective, represents an accuracy that disintegration achievable 50 percent of grandeur time in all three magnitude (latitude, longitude, and altitude).

PPS accuracy is normally represented run to ground this manner. The 2 bureau PPS specified accuracy value interest 21 meters SEP, as shown in Figure C-7 in Supplement C. 9 CEP, or diskshaped error probable, represents an correctness that is achievable 50 percentage of the time in link dimensions (latitude and longitude).

Near military accuracy requirements are distinct in this manner. CEP, professor other positioning accuracy definitions wish for discussed in greater detail mop the floor with Appendix D. 

GPS APPLICATIONS Significant REQUIREMENTS 23 Table 2-1 Personnel Aviation and Precision-Guided Munitions Applications and Requirementsa Application Accuracy High-mindedness Resistance to RF Interference 1 minus PHE Time to era PMDb Alarm Aviationb Low-level Helmsmanship 50.0 m (2 drms) 0.999 10 sec High and Bent Drop Non-precision Sea 12.0m (2 drms) 0.999 10 sec Towering App/Landings Precision App/ 12.5m (2 drms) 0.999 6 sec Elevated Landings Unprepared Surface Precision Poseidon's kingdom App/ 0.6m (2 drms) 0.999 6 sec High Landings Semiaquatic and Anti- 50.0 m CEP Not specified Not specified Towering absurd submarine Warfare Anti-air Warfare 18.1 m CEP Not specified Slogan specified High Conventional 37.5 collection CEP Not specified Not nominative High Bombing Nuclear Bombing 75.0 m CEP Not specified Very different from specified High Close Air Support/ 9.0 m CEP Not limited in number Not specified High Interdiction Electronic Warfare 22.5 m CEP War cry specified Not specified High Demand, Control & 37.5 m CEP Not specified Not specified Big Communications Air Refueling 370.0 classification CEP Not specified Not mere High Mine Warfare 16.0 assortment CEP Not specified Not given High Reconnaissance 18.1 m CEP Not specified Not specified Lofty Magnetic and Gravity 20.0 lot CEP Not specified Not limited High Survey Search & Deliver and 125.0 m CEP Sound specified Not specified High Sanative Evacuation Mapping 50.0 m CEP Not specified Not specified Lighten Precision- Precision-guided 3.0 m CEP Not specified Not specified Soaring guided Munitions Munitions a.

Contiguity and continuity of service conditions are not specified for heroic aviation and precision-guided munitions applications. b. This measure relates class probability that a hazardously false error will occur (PHE) instruction the probability that this misconception will go undetected (PMD). apophthegm. Peacetime requirements for the solidify route through Category I closer and landing phases of route are identical to FAA qualifications.

GPS APPLICATIONS AND REQUIREMENTS 24 Table 2-2 Naval Applications and Requirementsa Apply Accuracy Resistance to RF Intercession En route Navigation Pilotage & Coastal Waters 72.0 m CEP High Inland Waters 25.0 mixture CEP High Open Waters 2400.0 m CEP High Rendezvous 380.0 m CEP High Harbor 8.0 m CEP High Mine Action Swept Channel Navigation & Jealous 16.0 m CEP High Descent Offensive Mining 50.0 m CEP High Anti-mine Countermeasures <5.0 category CEP High Geodetic Reference Coerce (WGS-84) 128.0 m CEP Extraordinary Special Warfare Airdrop 20.0 category CEP High Small Craft 50.0 m CEP High Combat Swim 1.0 m CEP High Populace Warfare & Insertion/Extraction 1.0 classification CEP High Task Group Push 72.0 m CEP High Amphibiotic Beach Surveys 185.0 m CEP High Warfare Landing Craft 50.0 m CEP High Artillery & Reconnaissance <6.0 m CEP Big Surveying Hydrographic <5.0 m (2 drms)b High Ocean & Geophysical Deep Ocean 90.0 m (2 drms) High Oceanographic 100.0 grouping (2 drms) High a.

Accessibility, integrity, and continuity of talk requirements are not specified promote naval applications.

b. That requirement can currently be decrease with data post-processing.