Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2006-09-07
2008-10-14
Phan, Dao L (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357490
Reexamination Certificate
active
07436354
ABSTRACT:
The present invention relates to providing navigation guidance for mobile users, using Global Navigation Satellite Systems (GNSSs) for applications where the user position needs to be determined in real time while meeting the navigation requirements, especially integrity requirement, for the given application. The present invention assists in providing guidance with a high availability of integrity function by trading accuracy for integrity for two different types of navigation applications. A first type of application requires a capability of detecting an occurrence of multiple satellite signal faults; the first embodiment of the invention provides this capability with a high availability of integrity, using two or more independent GNSSs. A second type of application requires a capability of detecting an occurrence of a single satellite signal fault; the second embodiment of the invention provides this capability with a high availability of integrity, using any one or a combination of GNSSs. The detecting and deriving of both methods are (i) in position domain and (ii) determinative of mobile user safety.
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Lee, Dr. Young Chang, “A New Improved RAIM Method Based on the Optimally Weighted Average Solution (OWAS) Under the Assumption of a Single Fault,” Proceedings of the Institute of Navigation 2006 National Technical Meeting (ION NTM 2006), Jan. 19, 2006, (13 pages), Monterey, California, United States.
Phan Dao L
Sterne Kessler Goldstein & Fox PLLC
The MITRE Corporation
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