Systems and methods for updating HIL and HFOM integrity components when not extrapolating position data
AssigneeHoneywell International Inc.
InventorsBarry D. Webb, John Savoy
Life of this patent
Estimating the term…
Abstract
Systems and methods for reporting position and associated integrity during times when extrapolation is not taking place as accurately as possible. In one example, a processing device deactivates extrapolation of global positioning system (GPS) position information based on a predefined condition, receives ground speed information, and HFOM and HIL values from a global position system (GPS); calculates inflated HFOM and HIL values based on the received HFOM and HIL values and the ground speed and generates an automatic dependent surveillance-broadcast (ADS-B) OUT signal based on the calculated inflated HFOM and HIL values. A transmitter coupled to the processing device transmits the generated ADS-B OUT signal.
Claims20
A method comprising:
- deactivating, by a processing device, in response to a predefined condition, a process of performing extrapolation of position information based on the predefined condition by a position source system, without deactivating the position source system;
- receiving, by the processing device, ground speed information, and horizontal integrity level (HIL) and horizontal figure of merit (HFOM) values from the position source system;
- calculating, by the processing device, after deactivating the process of performing extrapolation of position information, inflated HFOM and HIL values based on the received HFOM and HIL values and the ground speed information;
- and
- generating, by the processing device, an automatic dependent surveillance-broadcast (ADS-B) Out signal based on the calculated inflated HFOM and HIL values.
A system comprising:
- a means for deactivating, in response to a predefined condition, a process of performing extrapolation of position information based on the predefined condition by a position source system, without deactivating the position source system;
- a means for receiving ground speed information, and horizontal integrity level (HIL) and horizontal figure of merit (HFOM) values from the position source system;
- a means for calculating, after the means for deactivating deactivates the process of performing extrapolation of position information by the position source system, inflated HFOM and HIL values based on the received HFOM and HIL values and the ground speed;
- and
- a means for generating an automatic dependent surveillance-broadcast (ADS-B) Out signal based on the calculated inflated HFOM and HIL values.
A system located in a vehicle, the system comprising:
- a positioning system configured to provide ground speed information and horizontal integrity level (HIL) and horizontal figure of merit (HFOM) values;
- a processing device configured to:
- deactivate, in response to a predefined condition, a process of performing extrapolation of position information based on the predefined condition by a positioning system, without deactivating the positioning system;
- receive ground speed information and horizontal integrity level (HIL) and horizontal figure of merit (HFOM) values from the positioning system;
- after deactivating the process of performing extrapolation of position information by the positioning system, calculate inflated HFOM and HIL values based on the received HFOM and HIL values and the ground speed;
- and
- generate an automatic dependent surveillance-broadcast (ADS-B) Out signal based on the calculated inflated HFOM and HIL values.
Dependencies are inferred from the claim text.