METHOD AND APPARATUS FOR GENERATING AND DISTRIBUTING SATELLITE TRACKING INFORMATION
First Claim
8-1. The apparatus of claim 11, wherein the orbit model comprises at least one of:
- square root of a semi-major axis, eccentricity, amplitude of a sine harmonic correction term to an orbit radius, amplitude cosine harmonic correction term to an orbit radius, mean motion difference, mean anomaly at a reference time, amplitude of a cosine harmonic correction to an argument of latitude, amplitude of a sine harmonic correction to the argument of latitude, amplitude of a cosine harmonic correction to an argument of inclination, amplitude of a sine harmonic correction to the argument of inclination, longitudinal of an ascending node of an orbit plane at a weekly epoch, inclination angle at a reference time, rate of inclination angle, and rate of right ascension and argument of perigee.
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Abstract
A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-positioning-system satellite, computing an orbit model using the initial model parameters, wherein a duration of the orbit model is longer than a duration of the satellite-tracking data, comparing, for an overlapping period of time, the orbit model to the satellite-tracking data; and adjusting the orbit model to match the satellite tracking data for the overlapping period of time so as to form an adjusted orbit model. The adjusted orbit model comprises the long-term-satellite-tracking data.
37 Citations
20 Claims
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8-1. The apparatus of claim 11, wherein the orbit model comprises at least one of:
- square root of a semi-major axis, eccentricity, amplitude of a sine harmonic correction term to an orbit radius, amplitude cosine harmonic correction term to an orbit radius, mean motion difference, mean anomaly at a reference time, amplitude of a cosine harmonic correction to an argument of latitude, amplitude of a sine harmonic correction to the argument of latitude, amplitude of a cosine harmonic correction to an argument of inclination, amplitude of a sine harmonic correction to the argument of inclination, longitudinal of an ascending node of an orbit plane at a weekly epoch, inclination angle at a reference time, rate of inclination angle, and rate of right ascension and argument of perigee.
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11. A apparatus for creating long term satellite tracking data, the apparatus comprising:
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memory having stored therein executable instructions; a processor operable to execute the executable instructions to; a) extract from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-positioning-system satellite; b) compute an orbit model using the initial model parameters, wherein a duration of the orbit model is longer than a duration of the satellite-tracking data; c) compare, for an overlapping period of time, the orbit model to the satellite-tracking data; and d) adjust the orbit model to match the satellite tracking data for the overlapping period of time so as to form an adjusted orbit model, wherein the adjusted orbit model comprises the long term satellite tracking data. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 19, 20)
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Specification