Method and apparatus for providing an integrated communications, navigation and surveillance satellite system
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Abstract
A system provides integrated communications, navigation and surveillance capabilities. A plurality of satellites broadcast multiple navigation signals and is capable of two-way communication. At least one monitoring station is capable of receiving the navigation signals broadcast by the satellites and of determining its position based upon the received navigation signals. The monitoring station communicates its computed position to a processing apparatus so that an integrity of the system can be ascertained.
30 Citations
41 Claims
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1-16. -16. (canceled)
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17. A system for providing integrated communications and navigation information, the system comprising:
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a plurality of satellites networked together, each of said satellites broadcasting navigation signals and being capable of two way communication; and
at least one monitoring station for receiving said navigation signals broadcast by said satellites, said at least one monitoring station computing its position based on said navigation signals and transmitting said computed position to at least one of said satellites and to a processing apparatus so that an integrity of said navigation signals can be checked. - View Dependent Claims (18, 19, 20, 28, 29, 30, 31, 40)
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21-23. -23. (canceled)
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24. A system for monitoring position locating information and providing feedback regarding an integrity of the position locating information, the system comprising:
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a plurality of satellites in communication with one another, each of said satellites broadcasting position locating information and having bi-directional communication capability;
at least one monitoring station at a known position and in direct communication with at least one of said satellites for receiving said position locating information, wherein said monitoring station extrapolates position information from said position locating information, transmits said position information to at least one of said satellites and a processing apparatus, and said processing apparatus uses said transmitted position information and said known position of said at least one monitoring station to verify an integrity of said position locating information being broadcast by said satellites. - View Dependent Claims (25, 26, 32, 41)
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27. (canceled)
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33. A method of checking an integrity of an integrated communication and navigation system, the method comprising:
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(a) broadcasting navigation signals from a plurality of satellites in communication with one another;
(b) computing a position of a monitoring station based upon said navigation signals received by said monitoring station;
(c) reporting said computed position to a processing apparatus via a communication signal sent to said satellites; and
(d) ascertaining an integrity of said navigation signals with said processing apparatus based upon said computed position and a known position of said monitoring station. - View Dependent Claims (36, 37, 38)
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34-35. -35. (canceled)
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39. (canceled)
Specification