Alrashid Cyber Mall, is Designed and hosted by Nova Stars Informations Services, Memeber of The Saudi Network, Trade and business informations and links to Saudi Arabia, Arabian gulf and middle east area.

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Other Positioning Systems Disadvantages

 

 

Disadvantages of Other Positioning Systems

Landmarks: Only work in local area. Subject to movement or destruction by environmental factors.
Dead Reckoning: Very complicated. Accuracy depends on measurement tools which are usually relatively crude. Errors accumulate quickly.
Celestial: Complicated. Only works at night in good weather. Limited precision.
OMEGA: Based on relatively few radio direction beacons. Accuracy limited and subject to radio interference.
LORAN: Limited coverage (mostly coastal). Accuracy variable, affected by geographic situation. Easy to jam or disturb.
SatNav: Based on low-frequency doppler measurements so it's sensitive to small movements at receiver. Few satellites so updates are infrequent.
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