METHODS AND SYSTEMS FOR RADAR AIDED AIRCRAFT POSITIONING FOR APPROACHES AND LANDINGS
First Claim
1. A method for radar aided positioning of an air vehicle for approach and landing, said method comprising:
- integrating global navigation satellite system (GNSS) data and inertial data to calculate a position of the air vehicle;
scanning the environment forward of the air vehicle with a radar;
accessing a database of terrain features and their radar signatures;
matching features in the radar scan data to the radar signatures in the database to determine an actual position of the air vehicle; and
synthesizing glide slope and localizer signals for the approach and landing based on the determined actual position.
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Abstract
A method for radar aided positioning of an air vehicle for approach and landing is described. The method includes integrating global navigation satellite system (GNSS) data and inertial data to calculate a position of the air vehicle, scanning the environment forward of the air vehicle with a radar, and accessing a database of terrain features and their radar signatures. The method further includes matching features in the radar scan data to the radar signatures in the database to determine an actual position of the air vehicle and synthesizing glide slope and localizer signals for the approach and landing based on the determined actual position.
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Citations
21 Claims
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1. A method for radar aided positioning of an air vehicle for approach and landing, said method comprising:
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integrating global navigation satellite system (GNSS) data and inertial data to calculate a position of the air vehicle; scanning the environment forward of the air vehicle with a radar; accessing a database of terrain features and their radar signatures; matching features in the radar scan data to the radar signatures in the database to determine an actual position of the air vehicle; and synthesizing glide slope and localizer signals for the approach and landing based on the determined actual position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An approach and landing system for an air vehicle comprising:
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an inertial data source configured to provide a position of the air vehicle; a radar system configured to scan the environment forward of the air vehicle; a database of terrain features including a location for each terrain feature stored in said database; and a processing device, said processing device programmed to match terrain features from a radar scan of the forward environment with terrain features in said database to monitor and refine the position of the air vehicle received from said inertial data source, said processing device is programmed to synthesize at least one of a glide slope signal and a localizer signal for the approach and landing based on the refined air vehicle position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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13. (canceled)
Specification