Title :
A Position Domain Relative RAIM Method
Author_Institution :
CAASD, MITRE Corp., McLean, VA, USA
fDate :
1/1/2011 12:00:00 AM
Abstract :
The GNSS Evolutionary Architecture Study (GEAS) Panel has been evaluating future GNSS-based architectures to provide worldwide instrument approach guidance known as LPV-200 in the 2025 to 2030 time frame. One of the architectures being considered by GEAS is based on a new concept called relative receiver autonomous integrity monitoring (RRAIM). In this architecture RRAIM is implemented in aircraft and is used in conjunction with a system like the satellite-based augmentation system (SBAS), possibly with a reduced number of ground reference stations or an integrity-assured GPS III system that meets all LPV-200 requirements except for the integrity time-to-alert (TTA) requirement. RRAIM fills the time gap between the required TTA and the TTA assured by GPS III (or SBAS augmentation) by propagating the most recent integrity-assured position solution to the current time using accumulated carrier phase single differences of range measurements. RRAIM gives significantly higher service availability than can be obtained with stand-alone absolute RAIM (ARAIM). This paper develops a position domain RRAIM method with an optimization scheme that further improves LPV-200 service availability.
Keywords :
Global Positioning System; aircraft instrumentation; distance measurement; optimisation; radio receivers; GEAS panel; GNSS evolutionary architecture study; LPV-200; RRAIM architecture; SBAS; TTA; aircraft; ground reference station; integrity-assured GPS III system; optimization; position domain relative RAIM method; range measurement; relative receiver autonomous integrity monitoring; satellite-based augmentation system; Availability; Equations; Monitoring; Phase measurement; Position measurement; Satellite broadcasting; Satellites;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2011.5705661