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US 2010/0164800 A1Published application
Satellite orbit data compressing method, satellite orbit data providing method, satellite orbit data decompressing method, and data compressing device
AssigneeSeiko Epson Corporation
InventorKenji Onda
Life of this patent
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Abstract
A satellite orbit data compressing method includes: determining a compression method of a parameter value on the basis of a variation tendency of the parameter value in an orbit model approximating a satellite orbit; and calculating a compressed parameter value by reducing a bit sequence representing the parameter value using the determined compression method.
Claims6
A satellite orbit data compression method comprising:
- determining a compression method of a parameter value on the basis of a variation tendency of the parameter value in an orbit model approximating a satellite orbit;
- and
- calculating a compressed parameter value by reducing a bit sequence representing the parameter value using the determined compression method.
A satellite orbit data providing method comprising:
- determining a compression method of a parameter value on the basis of a variation tendency of the parameter value in an orbit model approximating a satellite orbit;
- calculating a compressed parameter value by reducing a bit sequence representing the parameter value using the determined compression method;
- and
- providing satellite orbit data including the calculated compressed parameter value to a position calculating device along with identification information of the compression method.
1 more element
A data compressing device comprising:
- a determination unit determining a compression method of a parameter value on the basis of a variation tendency of the parameter value in an orbit model approximating a satellite orbit;
- and
- a calculation unit calculating a compressed parameter value by reducing a bit sequence representing the parameter value using the determined compression method.
Dependencies are inferred from the claim text.