APPARATUS FOR IMPROVED INTEGRITY OF WIDE AREA DIFFERENTIAL SATELLITE NAVIGATION SYSTEMS
First Claim
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1. A ground based augmentation system (GBAS) network, comprising:
- a navigation satellite;
an interconnecting system communication network;
at least a first GBAS and a second GBAS, each GBAS comprising;
a GBAS receiver that is configured to receive navigation satellite data from the navigation satellite and covert it into GBAS raw augmentation data;
a GBAS processor that is configured to receive GBAS raw augmentation data from the GBAS receiver and to format it into formatted GBAS differential correction and integrity data; and
a GBAS transmitter configured to send GBAS differential correction and integrity data to the interconnecting system communication network;
the GBAS processor of the first GBAS being configured to receive GBAS differential correction and integrity data produced by the second GBAS and to include this data in its own formatted GBAS differential correction and integrity data.
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Abstract
An arrangement and appertaining method utilizing the arrangement provides a cost effective way to implement an accurate and cost effective satellite positioning differential augmentation system. This hybrid system integrates a network of Ground Based Augmentation Systems (GBAS) with a Satellite Based Augmentation System (SBAS), permitting the high integrity features of the GBAS to be utilized with the much broader coverage area of the SBAS system without requiring significant expenditures that would be required for upgrading either of the systems independently.
35 Citations
14 Claims
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1. A ground based augmentation system (GBAS) network, comprising:
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a navigation satellite;
an interconnecting system communication network;
at least a first GBAS and a second GBAS, each GBAS comprising;
a GBAS receiver that is configured to receive navigation satellite data from the navigation satellite and covert it into GBAS raw augmentation data;
a GBAS processor that is configured to receive GBAS raw augmentation data from the GBAS receiver and to format it into formatted GBAS differential correction and integrity data; and
a GBAS transmitter configured to send GBAS differential correction and integrity data to the interconnecting system communication network;
the GBAS processor of the first GBAS being configured to receive GBAS differential correction and integrity data produced by the second GBAS and to include this data in its own formatted GBAS differential correction and integrity data.
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2. An integrated satellite based augmentation system (SBAS)—
- GBAS comprising;
a navigation satellite;
an interconnecting system communication network;
one or more GBASs, each GBAS comprising;
a GBAS receiver that is configured to receive navigation satellite data from the navigation satellite and covert it into GBAS raw augmentation data;
a GBAS processor that is configured to receive GBAS raw augmentation data from the receiver and to format it into formatted GBAS differential correction and integrity data; and
a GBAS transmitter configured to send GBAS differential correction and integrity data to the interconnecting system communication network;
the integrated SBAS-GBAS system further comprising;
an SBAS, comprising;
an SBAS satellite that is configured to transmit SBAS correction and integrity data to a user;
an SBAS receiver that is configured to receive navigation satellite data from the navigation satellite and convert it into SBAS augmentation data;
an SBAS master station that is configured to receive the SBAS augmentation data from the receiver, to receive GBAS differential correction and integrity data from the interconnecting system communication network, and to transmit processed SBAS correction and integrity data that includes the received GBAS differential correction and integrity data to the SBAS satellite. - View Dependent Claims (3)
- GBAS comprising;
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4. An integrated SBAS—
- GBAS system comprising;
a navigation satellite;
an interconnecting system communication network;
one or more GBASs, each GBAS comprising;
a receiver that is configured to receive navigation satellite data from the navigation satellite over a navigation satellite to GBAS receiver communication path and convert the navigation satellite data into GBAS raw augmentation data;
a processor that is configured to receive GBAS raw augmentation data over a receiver to processor communication path, the processor comprising;
a network input connected to a GBAS to interconnecting system communication network communication path that is configured to receive formatted integrated system data from the communication network;
a receiver input connected to a GBAS receiver to GBAS processor communications path that is configured to receive the raw augmentation data from the receiver;
an augmentation data database;
a Local Area Augmentation System (LAAS) message receiver that is configured to receive the formatted integrated system data from the network input, convert the integrated system data, and store it in the augmentation data database;
a GBAS receiver augmentation data receiver that is configured to receive the raw augmentation data from the receiver input, convert the raw augmentation data, and store it in the augmentation data database;
an integrity monitor checker that is configured to read data from the augmentation data database;
a receiver status database that is configured to store receiver status data;
an LAAS message formatter that is configured to accept information from at least one of the augmentation data database, the integrity monitor checker and the GBAS receiver status database, and is configured to create at least one of LAAS messages for output;
a network output that is configured to accept LAAS messages from the LAAS message formatter and output them to the GBAS to interconnecting system communication network communication path;
a transmitter/user output that is configured to accept LAAS messages from the LAAS message formatter and output them to at least one of a local transmitter and user;
the integrated SBAS-GBAS system further comprising;
an SBAS, comprising;
an SBAS satellite that transmits SBAS correction and integrity data to a user over an SBAS satellite to SBAS user communication path;
a receiver that is configured to receive navigation satellite data from the navigation satellite over a navigation satellite to SBAS receiver communication path and convert the navigation satellite data into SBAS augmentation data;
a master station that is configured to receive the SBAS augmentation data from the receiver over an SBAS receiver to SBAS master station communication path, the master station further comprising;
a network input connected to an SBAS to interconnecting system communication network communication path that is configured to receive formatted integrated system data from the communication network;
a receiver input connected to an SBAS receiver to SBAS master station communications path that is configured to receive SBAS augmentation data from the receiver;
an augmentation data database;
an SBAS LAAS message receiver that is configured to receive the formatted integrated system data from the network input, convert the integrated system data, and store it in the augmentation data database;
an SBAS receiver augmentation data receiver that is configured to receive the SBAS augmentation data from the receiver input, convert the SBAS augmentation data, and store it in the augmentation data database;
an SBAS integrity processor that is configured to receive the SBAS augmentation data that is stored in the augmentation data database and configured to process integrity data;
a correction processor that is configured to receive augmentation data from the augmentation database and the integrity data and produce SBAS correction and integrity data;
an output that is configured to accept the SBAS correction and integrity data from the correction processor and output them to the SBAS satellite via the SBAS master station to SBAS satellite communication path.
- GBAS system comprising;
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5. A method for operating a networked GBAS system, comprising:
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receiving navigation satellite data by a first GBAS;
formatting navigation satellite data by the first GBAS into formatted GBAS differential correction and integrity data;
transmitting the formatted GBAS differential correction and integrity data to an interconnecting system communication network;
receiving the formatted GBAS differential correction and integrity data from the interconnecting system communication network by a second GBAS;
formatting navigation satellite data by the second GBAS into further formatted GBAS differential correction and integrity data, utilizing the received formatted GBAS differential correction and integrity data from the first GBAS; and
transmitting the further formatted GBAS differential correction and integrity data to at least one of the interconnecting system communication network and a GBAS user. - View Dependent Claims (6, 7, 8)
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9. A method for transmitting SBAS correction and integrity data to an SBAS satellite, comprising:
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producing, by a GBAS processor, formatted integrated system data comprising GBAS raw augmentation data;
receiving, by an SBAS master station, SBAS augmentation data from an SBAS receiver and the formatted integrated system correction and integrity data from a communication network;
formatting, by the SBAS master station, SBAS correction and integrity data using the SBAS augmentation data and the GBAS differential correction and integrity data; and
transmitting the SBAS correction and integrity data to an SBAS satellite by the SBAS master station.
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10. A method for operating an integrated SBAS-GBAS system that comprises
a GBAS and an SBAS, the method comprising: -
receiving navigation satellite data by a GBAS receiver and an SBAS receiver;
formatting GBAS raw augmentation data from the navigation satellite data by the GBAS receiver;
transmitting, by the GBAS receiver, GBAS raw augmentation data to a GBAS processor;
formatting GBAS raw augmentation data into formatted GBAS differential correction and integrity data by the GBAS processor;
transmitting the formatted GBAS differential correction and integrity data to an interconnecting system communication network;
formatting SBAS augmentation data from the navigation satellite data by the SBAS receiver;
transmitting, by the SBAS receiver, SBAS augmentation data to an SBAS master station;
receiving, by the SBAS master station, formatted GBAS differential correction and integrity data from the interconnecting system communication network;
formatting, by the SBAS master station, SBAS correction and integrity data using the SBAS augmentation data and the GBAS differential correction and integrity data; and
transmitting the SBAS correction and integrity data to an SBAS satellite by the SBAS master station. - View Dependent Claims (11, 12, 13, 14)
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Specification