Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris
First Claim
Patent Images
1. A method for locating position comprising:
- receiving satellite telemetry data from all of the satellites in a global positioning system constellation of satellites using a network of tracking stations, where the network includes enough tracking stations to observe only a portion of an orbital sphere for the global positioning system constellation, the portion selected to include all of the orbits of the satellites;
communicating the received satellite telemetry data to a central processing site;
propagating selected satellite telemetry data to a mobile receiver; and
acquiring at least one satellite signal at said mobile receiver using said selected satellite telemetry data.
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Abstract
An 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.
6 Citations
23 Claims
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1. A method for locating position comprising:
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receiving satellite telemetry data from all of the satellites in a global positioning system constellation of satellites using a network of tracking stations, where the network includes enough tracking stations to observe only a portion of an orbital sphere for the global positioning system constellation, the portion selected to include all of the orbits of the satellites;
communicating the received satellite telemetry data to a central processing site;
propagating selected satellite telemetry data to a mobile receiver; and
acquiring at least one satellite signal at said mobile receiver using said selected satellite telemetry data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 19, 20, 21)
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13. Apparatus for locating a position of a mobile receiver comprising:
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a network of satellite signal receivers for receiving satellite signals from all satellites in a constellation of global positioning satellites, where the network includes enough satellite signal receivers to observe only a portion of an orbital sphere for the constellation of global positioning satellites, the portion selected to include all of the orbits of the satellites;
a communications network, coupled to each of said satellite signal receivers in said plurality of satellite signal receivers;
a satellite data processor, coupled to said communications network; and
a mobile receiver, coupled to said satellite data processor.
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18. Apparatus for providing satellite data to a mobile receiver comprising:
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a network of tracking stations for receiving telemetry data from satellites in a constellation, where the network includes enough tracking stations to observe only a portion of an orbital sphere for the constellation, the portion selected to include all of the orbits of the satellites; and
a communication network for propagating the telemetry data from all the satellites to a data processor.
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22. A method for locating position comprising:
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receiving satellite telemetry data from all of the satellites in a global positioning system constellation of satellites using a plurality of tracking stations, where the plurality of tracking stations are positioned to observe only a portion of an orbital sphere for the global positioning system constellation, the portion selected to include all of the orbits of the satellites;
communicating the received satellite telemetry data to a central processing site;
propagating selected satellite telemetry data to a mobile receiver; and
acquiring at least one satellite signal at said mobile receiver using said selected satellite telemetry data. - View Dependent Claims (23)
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Specification