Generation and transmission of navigation signals
AssigneeXona Space Systems Inc.
InventorsRobert Martin Grayson, Andrew Michael Neish, Joshua Earl McGhee
Life of this patent
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Abstract
A navigation processing system includes at least one processor configured to execute operational instructions that cause the at least one processor to perform operations that include generating navigation data. A data stream is generated based on the navigation data and a data channel spreading sequence. A pilot stream is generated based on a pilot channel spreading sequence. A navigation signal is generated based on applying a bandwidth-efficient modulation scheme to the data stream and the pilot stream. The navigation is signal is broadcast via a navigation signal transmitter for receipt by at least one client device.
Claims20
A satellite comprising:
- at least one processor configured to execute operational instructions that cause the at least one processor to perform operations that include:
- generating navigation data based on orbital state data;
- generating a low band data stream and a high band data stream based on the navigation data and a data channel spreading sequence;
- generating a low band pilot stream and a high band pilot stream based on a pilot channel spreading sequence;
- and
- generating a low band navigation signal based on cross-correlating the low band data stream and the low band pilot stream in accordance with a bandwidth-efficient modulation scheme;
- and
- generating a high band navigation signal based on cross-correlating the high band data stream and the high band pilot stream in accordance with the bandwidth-efficient modulation scheme;
- and
- a navigation signal transmitter configured to broadcast the low band navigation signal and the high band navigation signal for receipt by at least one client device, the low band navigation signal and the high band navigation signal facilitating the at least one client device to determine state data of the at least one client device.
A navigation processing system comprising:
- at least one processor configured to execute operational instructions that cause the at least one processor to perform operations that include:
- generating navigation data;
- generating a data stream based on the navigation data and a data channel spreading sequence;
- generating a pilot stream based on a pilot channel spreading sequence;
- and
- generating a navigation signal based on applying a bandwidth-efficient modulation scheme to the data stream and the pilot stream;
- and
- a navigation signal transmitter configured to broadcast the navigation signal for receipt by at least one client device, the navigation signal facilitating the at least one client device to determine state data of the at least one client device.
A method comprising:
- generating orbital state data for a satellite;
- generating navigation data based on the orbital state data;
- generating a data stream based on the navigation data and a data channel spreading sequence;
- generating a pilot stream based on a pilot channel spreading sequence;
- and
- generating a navigation signal by cross-correlating the data stream and the pilot stream in accordance with a bandwidth-efficient modulation scheme;
- and
- broadcasting the navigation signal for receipt by at least one client device, the navigation signal facilitating the at least one client device to determine state data of the at least one client device.
Dependencies are inferred from the claim text.