LOW EARTH ORBIT SATELLITE PROVIDING NAVIGATION SIGNALS
First Claim
1. A method of providing a low earth orbit (LEO) signal from a LEO satellite, the method comprising:
- providing a plurality of transmit channels over a plurality of transmit slots, wherein the transmit channels comprise a set of communication channels and a set of navigation channels;
generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal;
applying the first PRN ranging overlay to a first set of the navigation channels;
combining the communication channels and the navigation channels into a LEO signal; and
broadcasting the LEO signal from the LEO satellite.
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Accused Products
Abstract
Low earth orbit (LEO) satellites are used to provide navigation signals. In one embodiment, a method of providing a LEO signal from a LEO satellite includes providing a plurality of transmit channels over a plurality of transmit slots. The transmit channels comprise a set of communication channels and a set of navigation channels. The method also includes generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal. The method further includes applying the first PRN ranging overlay to a first set of the navigation channels. In addition, the method includes combining the communication channels and the navigation channels into a LEO signal. The method also includes broadcasting the LEO signal from the LEO satellite.
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Citations
25 Claims
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1. A method of providing a low earth orbit (LEO) signal from a LEO satellite, the method comprising:
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providing a plurality of transmit channels over a plurality of transmit slots, wherein the transmit channels comprise a set of communication channels and a set of navigation channels;
generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal;
applying the first PRN ranging overlay to a first set of the navigation channels;
combining the communication channels and the navigation channels into a LEO signal; and
broadcasting the LEO signal from the LEO satellite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A low earth orbit (LEO) satellite comprising:
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an antenna adapted to broadcast a LEO signal from the LEO satellite; and
a processor adapted to;
provide a plurality of transmit channels over a plurality of transmit slots, wherein the transmit channels comprise a set of communication channels and a set of navigation channels, generate a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal, apply the first PRN ranging overlay to a first set of the navigation channels, and combine the communication channels and the navigation channels into the LEO signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A low earth orbit (LEO) satellite comprising:
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means for providing a plurality of transmit channels over a plurality of transmit slots, wherein the transmit channels comprise a set of communication channels and a set of navigation channels;
means for generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal;
means for applying the first PRN ranging overlay to a first set of the navigation channels;
means for combining the communication channels and the navigation channels into a LEO signal; and
means for broadcasting the LEO signal from the LEO satellite.
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Specification