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  2. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    The navigation message contains corrections for these errors and estimates of the accuracy of the atomic clock. However, they are based on observations and may not indicate the clock's current state. These problems tend to be very small, but may add up to a few meters (tens of feet) of inaccuracy. [7]

  3. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    In 1960, the Air Force proposed a radio-navigation system called MOSAIC (MObile System for Accurate ICBM Control) that was essentially a 3-D LORAN System. A follow-on study, Project 57, was performed in 1963 and it was "in this study that the GPS concept was born".

  4. Localizer performance with vertical guidance - Wikipedia

    en.wikipedia.org/wiki/Localizer_Performance_with...

    Examples of receivers providing LPV capability include (from Garmin) the GTN 7xx & 6xx, GNS 480, GNS 430W & 530W, and the post 2007 Garmin G1000 with GIA 63W. Various FMS models, GNSS receivers and FMS upgrades are available from Rockwell Collins (e.g. [3]).

  5. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    Vehicle navigation on a personal navigation assistant Garmin eTrex10 edition handheld. A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS).

  6. Dilution of precision (navigation) - Wikipedia

    en.wikipedia.org/wiki/Dilution_of_precision...

    At this confidence level, positional measurements are considered accurate enough to meet all but the most sensitive applications. 2–5 Good Represents a level that marks the minimum appropriate for making accurate decisions. Positional measurements could be used to make reliable in-route navigation suggestions to the user. 5–10 Moderate

  7. Differential GPS - Wikipedia

    en.wikipedia.org/wiki/Differential_GPS

    This presented a problem for civilian users who relied upon ground-based radio navigation systems such as LORAN, VOR and NDB systems costing millions of dollars each year to maintain. The advent of a global navigation satellite system (GNSS) could provide greatly improved accuracy and performance at a fraction of the cost. The accuracy inherent ...

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