Signal verification
AssigneeSTMicroelectronics (Research & Development) Limited
InventorPeter Bagnall
Life of this patent
Estimating the term…
Abstract
A first position of a satellite is calculated at a first time in dependence on received orbit data corresponding to an orbit path of the satellite. Anan orbit path of the satellite is modeled from the first position at the first time to a second time to determine a second position of the satellite at the second time. A third position of the satellite is then calculated at the second time in dependence on the received orbit data. The second position and third position are compared to determine a validity of the orbit data.
Claims25
A method comprising:
- calculating a first position of a satellite at a first time in dependence on received orbit data corresponding to an orbit path of the satellite;
- modeling an orbit path of the satellite from the first position at the first time to a second time to determine a second position of the satellite at the second time;
- calculate a third position of the satellite at the second time in dependence on the received orbit data;
- and
- comparing said second position and said third position to determine a validity of the orbit data.
A computer readable medium including computer instructions for
- calculating a first position of a satellite at a first time in dependence on received orbit data corresponding to an orbit path of the satellite;
- modeling an orbit path of the satellite from the first position at the first time to a second time to determine a second position of the satellite at the second time;
- calculating a third position of the satellite at the second time in dependence on the received orbit data;
- and
- comparing said second position and said third position to determine a validity of the orbit data.
An apparatus comprising:
- a processor configured to:
- calculate a first position of a satellite at a first time in dependence on received orbit data corresponding to an orbit path of the satellite;
- model an orbit path of the satellite from the first position at the first time to a second time to determine a second position of the satellite at the second time;
- calculate a third position of the satellite at the second time in dependence on the received orbit data;
- and
- compare said second position and said third position to determine a validity of the orbit data.
An apparatus comprising:
- a processor configured to:
- receive an indication of a validity of orbit data;
- determine a validity of positional information associated with said orbit data based on said indication.
An apparatus comprising:
- processing means for calculating a first position of a satellite at a first time in dependence on received orbit data corresponding to an orbit path of the satellite, modeling an orbit path of the satellite from the first position at the first time to a second time to determine a second position of the satellite at the second time, calculating a third position of the satellite at the second time in dependence on the received orbit data and comparing said second position and said third position to determine a validity of the orbit data.
Dependencies are inferred from the claim text.