Generalized high performance navigation system
First Claim
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1. A method of performing navigation, the method comprising:
- receiving a low earth orbit (LEO) signal from a LEO satellite, wherein the LEO signal comprises;
a plurality of communication channels,a plurality of communication signals provided in the communication channels,a plurality of navigation channels, anda navigation signal comprising navigation data encoded in a navigation carrier signal distributed over the navigation channels by a pseudo random noise (PRN) encoding;
decoding the navigation signal from the LEO signal;
receiving first and second ranging signals from first and second ranging sources, respectively;
receiving calibration information associated with the first and second ranging sources; and
calculating a position using the navigation signal, the first and second ranging signals, and the calibration information.
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Abstract
A generalized high performance navigation system is provided using low earth orbit (LEO) satellites. In one embodiment, a method of performing navigation includes receiving a LEO signal from a LEO satellite. The method also includes decoding a navigation signal from the LEO signal. The method further includes receiving first and second ranging signals from first and second ranging sources, respectively. In addition, the method includes determining calibration information associated with the first and second ranging sources. The method also includes calculating a position using the navigation signal, the first and second ranging signals, and the calibration information.
67 Citations
42 Claims
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1. A method of performing navigation, the method comprising:
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receiving a low earth orbit (LEO) signal from a LEO satellite, wherein the LEO signal comprises; a plurality of communication channels, a plurality of communication signals provided in the communication channels, a plurality of navigation channels, and a navigation signal comprising navigation data encoded in a navigation carrier signal distributed over the navigation channels by a pseudo random noise (PRN) encoding; decoding the navigation signal from the LEO signal; receiving first and second ranging signals from first and second ranging sources, respectively; receiving calibration information associated with the first and second ranging sources; and calculating a position using the navigation signal, the first and second ranging signals, and the calibration information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A navigation device comprising:
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an antenna adapted to receive a low earth orbit (LEO) signal from a LEO satellite, receive first and second ranging signals from first and second ranging sources, respectively, and receive calibration information associated with the first and second ranging sources, wherein the LEO signal comprises; a plurality of communication channels, a plurality of communication signals provided in the communication channels, a plurality of navigation channels, and a navigation signal comprising navigation data encoded in a navigation carrier signal distributed over the navigation channels by a pseudo random noise (PRN) encoding; a receiver processor adapted to downconvert the LEO signal for further processing; and a navigation processor adapted to; decode the navigation signal from the LEO signal, decode the calibration information from the LEO signal, and calculate a position of the navigation device using the navigation signal, the first and second ranging signals, and the calibration information. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A navigation device comprising:
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means for receiving a low earth orbit (LEO) signal from a LEO satellite, wherein the LEO signal comprises; a plurality of communication channels, a plurality of communication signals provided in the communication channels, a plurality of navigation channels, and a navigation signal comprising navigation data encoded in a navigation carrier signal distributed over the navigation channels by a pseudo random noise (PRN) encoding; means for decoding the navigation signal from the LEO signal; means for receiving first and second ranging signals from first and second ranging sources, respectively; means for receiving calibration information associated with the first and second ranging sources; means for calculating a position using the navigation signal, the first and second ranging signals, and the calibration information. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification