Method, apparatus, system, and computer software program product for determining position integrity in a system having a global navigation satellite system (GNSS) component

The present invention relates to navigational systems and, more particularly, to a method, apparatus, system, and computer software program product for determining position integrity in a navigational system having a Global Navigation Satellite System (GNSS) component. A method is provided for deter...

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Bibliographische Detailangaben
1. Verfasser: Maynard, James H
Format: Patent
Sprache:eng
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Zusammenfassung:The present invention relates to navigational systems and, more particularly, to a method, apparatus, system, and computer software program product for determining position integrity in a navigational system having a Global Navigation Satellite System (GNSS) component. A method is provided for determining position integrity in a system having a Global Navigation Satellite System (GNSS) component, such as, for example, a Global Positioning System (GPS) device. For successive alarm limits, with each alarm limit corresponding to a position integrity level, it is determined whether valid position integrity information is available. At the alarm limit at which valid position integrity information is first available, a corresponding position integrity level is determined. If no valid position integrity information is available for any of the alarm limits, a default position integrity level is then designated. An associated apparatus, system, and computer software program product are also provided.