METHOD AND APPARATUS FOR LOCATING MOBILE RECEIVERS USING A WIDE AREA REFERENCE NETWORK FOR PROPAGATING EPHEMERIS
First Claim
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1. A method of distributing satellite-navigation data, comprising:
- processing satellite signals at each of a plurality of reference stations to receive a respective plurality of satellite-navigation-data streams;
forming packets in response to said plurality of satellite-navigation-data streams to generate a plurality of packetized satellite-navigation-data streams;
sending each of said plurality of packetized-satellite-navigation-data streams to a processing system;
removing, at said processing system, duplicate packets within said plurality of packetized satellite-navigation-data streams to generate a combined packet stream; and
sending said combined packet stream into a communication network.
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Abstract
A method and apparatus for distribution and delivery of global positioning system (GPS) satellite telemetry data using a communication link between a central site and a mobile GPS receiver. The central site is coupled to a network of reference satellite receivers that send telemetry data from all satellites to the central site. The mobile GPS receiver uses the delivered telemetry data to aid its acquisition of the GPS satellite signal. The availability of the satellite telemetry data enhances the mobile receiver'"'"'s signal reception sensitivity.
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Citations
20 Claims
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1. A method of distributing satellite-navigation data, comprising:
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processing satellite signals at each of a plurality of reference stations to receive a respective plurality of satellite-navigation-data streams; forming packets in response to said plurality of satellite-navigation-data streams to generate a plurality of packetized satellite-navigation-data streams; sending each of said plurality of packetized-satellite-navigation-data streams to a processing system; removing, at said processing system, duplicate packets within said plurality of packetized satellite-navigation-data streams to generate a combined packet stream; and sending said combined packet stream into a communication network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for distributing satellite-navigation data, comprising:
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a plurality of reference stations operable to process satellite signals to receive a respective plurality of satellite-navigation-data streams, and to form packets in response to said plurality of satellite-navigation-data streams so as to generate a plurality of packetized-satellite-navigation-data streams; and a processing system operable to receive each of said plurality of packetized-satellite-navigation-data streams, to remove duplicate satellite-navigation-data streams within said plurality of packetized satellite-navigation-data streams so as to generate a combined packet stream, and to send said combined packet stream into a communication network. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for distributing satellite-navigation data, comprising:
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means for processing satellite signals at each of a plurality of reference stations to receive a respective plurality of satellite-navigation-data streams; means for forming packets in response to said plurality of satellite-navigation-data streams to generate a plurality of packetized satellite-navigation-data streams; means for sending each of said plurality of packetized satellite-navigation-data streams to a processing system; means for removing, at said processing system, duplicate packets within said plurality of packetized satellite-navigation-data streams to generate a combined packet stream; and means for sending said combined packet stream into a communication network.
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Specification