Locating satellites
First Claim
1. A method of locating the position of a satellite in a satellite positioning system, the method comprising:
- receiving, at a terminal, satellite positioning data for at least one specified time period over a communications channel;
storing, at the terminal, the satellite positioning data for the at least one specified time period; and
responsive to an event at a later time, calculating, at the terminal, the satellite position at the later time based on the satellite positioning data for the at least one specified time period.
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Accused Products
Abstract
A system and method of locating the position of a satellite or a user using a satellite positioning system. The system and method includes receiving, at a terminal, satellite positioning data for at least one specified time period over a communications channel. In addition, the system includes storing, at the terminal, the satellite positioning data for the at least one specified time period. Responsive to an event at a later time, the system generally calculates, at the terminal, the satellite position at the later time based only on the satellite positioning data for the at least one specified time period.
38 Citations
20 Claims
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1. A method of locating the position of a satellite in a satellite positioning system, the method comprising:
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receiving, at a terminal, satellite positioning data for at least one specified time period over a communications channel; storing, at the terminal, the satellite positioning data for the at least one specified time period; and responsive to an event at a later time, calculating, at the terminal, the satellite position at the later time based on the satellite positioning data for the at least one specified time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A terminal to locate the position of a satellite in a satellite positioning system, the terminal comprising:
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a receiver to receive satellite positioning data for at least one specified time period over a communications channel; a memory to store the satellite positioning data for the at least one specified time period; and a circuit to calculate, responsive to an event at a later time, the satellite position at the further time based only on the satellite positioning data for the at least one specified time period. - View Dependent Claims (13, 14, 15)
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16. A method of determining the local position of a user of a terminal at the request of the user, comprising:
calculating, at the terminal, the position of a satellite in a satellite positioning system at a time of the request based only on satellite positioning data previously received at the terminal for at least one specified time period over a communications channel and stored at the terminal. - View Dependent Claims (17, 18, 19, 20)
Specification