DATA COMPRESSING METHOD, DATA PROVIDING METHOD, AND DATA COMPRESSING DEVICE
First Claim
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1. A data compressing method comprising:
- calculating prediction orbit data of a plurality of positioning satellites moving along predetermined orbits around the earth by using prediction positions of the plural positioning satellites;
calculating differences between standard orbit data as standard for the predetermined orbits around the earth and the prediction orbit data of the plural positioning satellites; and
storing the differences.
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Abstract
A data compressing method includes: calculating prediction orbit data of a plurality of positioning satellites moving along predetermined orbits around the earth by using prediction positions of the plural positioning satellites; calculating differences between standard orbit data as standard for the predetermined orbits around the earth and the prediction orbit data of the plural positioning satellites; and storing the differences.
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Citations
6 Claims
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1. A data compressing method comprising:
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calculating prediction orbit data of a plurality of positioning satellites moving along predetermined orbits around the earth by using prediction positions of the plural positioning satellites; calculating differences between standard orbit data as standard for the predetermined orbits around the earth and the prediction orbit data of the plural positioning satellites; and storing the differences. - View Dependent Claims (2, 3, 4, 5)
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6. A data compressing device, comprising:
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a prediction orbit data calculating unit which calculates prediction orbit data of a plurality of positioning satellites moving along predetermined orbits around the earth by using prediction positions of the plural positioning satellites; a difference calculating unit which calculates differences between standard orbit data as standard for the predetermined orbits around the earth and the prediction orbit data of the plural positioning satellites; and a difference storing unit which stores the differences.
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Specification