Method and apparatus for generating and distributing satellite tracking information in a compact format
First Claim
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1. A method of creating and distributing compact satellite orbit models comprising:
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Abstract
A method and apparatus for creating and distributing satellite tracking data in a compact format to a remote receiver. At least a portion of the satellite tracking data is extracted from memory and is formatted into a compact format. The compact formatted data is transmitted to the remote receiver via a distribution network. Once this data is received at the remote receiver it is reformatted into a format prescribed by the remote receiver
155 Citations
49 Claims
- 1. A method of creating and distributing compact satellite orbit models comprising:
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16. A method of creating and distributing a compact orbit model, the method comprising:
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receiving satellite signals measurement data from at least one a receiving station, the measurement data being based on satellite signals received by the receiving station; extracting at least a portion of the satellite tracking data from the satellite signal, where saidmeasurement data, wherein the portion of the satellite tracking data comprises a first number of orbit terms that define a first orbit model, the orbit terms comprising harmonic and non-harmonic parameters; formatting said the portion of the satellite tracking data to form formatted data having a second number of orbit terms that define a second orbit model, where said wherein the first number of orbit terms is greater than said the second number of orbit terms, the second number of orbit terms excluding the harmonic parameters; transmitting the formatted data to a remote receiver; and at the remote receiver, expanding, by the remote receiver, the formatted data to have the first number of orbit terms, and using the expanded data to determine a location of the remote receiver. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of creating a compact orbit model, the method comprising:
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receiving, by a global positioning system (GPS) receiver, satellite tracking information from one or more satellites; providingtransmitting, to a server, a satellite orbit model having a first set of termssatellite ephemeris parameters determined from the satellite tracking information, the first set of ephemeris parameters comprising harmonic parameters and non-harmonic parameters; adjusting, by the server, the first set of terms satellite ephemeris parameters to produce a the compact orbit model having a second set of terms where satellite ephemeris parameters, wherein a number of terms parameters in the first set of terms of satellite ephemeris parameters is greater than a number of terms parameters in said the second set of satellite ephemeries parametersof terms, the second set of satellite ephemeris parameters excluding the harmonic parameters; and transmitting the compact orbit model to a remote receiver configured to determine a location of the remote receiver, wherein the remote receiver is configured to expand the compact orbit model, and wherein the location is based on the expanded compact orbit model. - View Dependent Claims (27, 28)
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29. Apparatus An apparatus for creating and distributing compact satellite orbit models, the apparatus comprising:
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at least onea satellite signal receiver for receiving satellite signals from at least onea satellite; means for collecting measurement data from the satellite signals received by the satellite signal receiver and extracting at least a portion of the satellite tracking data from said the measurement data to represent satellite signal, representing said the portion of the satellite tracking data in a first format that includes a first set of terms that define a first form of an orbit model, the first set of terms comprising harmonic and non-harmonic parameters; means for reformatting the first form of the orbit model to generate a second format including a second set of terms that define a second form of the orbit model, the second form excluding the harmonic parameters; a transmitter for transmitting the formatted portion of the satellite tracking data in the second format to a remote receiver; and atwherein the remote receiver, representing said formattedrepresents the portion of the satellite tracking data in a secondthe second format back into the first format supported by the remote receiver, and wherein the remote receiver is configured to use the first format to determine a location of the remote receiver. - View Dependent Claims (30, 31, 32, 33)
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34. A method of creating and distributing compact satellite orbit models, the method comprising:
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receiving, from at least one receiving station, measuring data from satellite signals received by the at least one receiving station; extracting a portion of satellite tracking data from the measurement data; representing the extracted portion of satellite tracking data as a compact satellite orbit model having a first format, wherein the compact satellite orbit model is a subset of satellite ephemeris parameters, wherein the satellite ephemeris parameters includes harmonic and non-harmonic parameters, and wherein the representing the extracted portion of satellite tracking data as the compact satellite orbit model comprises excluding the harmonic parameters; transmitting the compact satellite orbit model having the first format to a remote receiver; representing, by the remote receiver, the compact satellite orbit model having the first format in a second satellite orbit model having a second format supported by the remote receiver, wherein the second satellite orbit model includes the satellite ephemeris parameters; and using the second satellite orbit model to determine a location of the remote receiver. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An apparatus for creating and distributing compact satellite orbit models, the apparatus comprising:
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a satellite signal receiver for receiving satellite signals from a satellite; means for collecting measurement data from the satellite signals received by the satellite signal receiver and extracting a portion of satellite tracking data from the measurement data to represent the portion of the satellite tracking data as a compact satellite orbit model having a first format, wherein the compact satellite orbit model is a subset of satellite ephemeris paramaters including harmonic and non-harmonic parameters, and wherein the compact satellite orbit model excludes the harmonic paramerers; a transmitter for transmitting the compact satellite orbit model to a remote receiver; and wherein the remote receiver represents the compact satellite orbit model in a second satellite orbit model having a second format supported by the remote receiver and determines a location of the remote receiver using the second satellite orbit model, wherein the second satellite orbit model includes the satellite ephemeris parameters. - View Dependent Claims (48, 49)
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Specification