Ground-based sense-and-avoid display system (SAVDS) for unmanned aerial vehicles
First Claim
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1. A ground-based sense and avoid display system for an unmanned aerial vehicle (“
- UAV”
) comprising;
a data transfer station, comprising a ground-based radar and a first spread spectrum transceiver that receives radar data from the radar and transmits the radar data;
a data receiving ground station comprising a second spread spectrum transceiver that receives the radar data from the first transceiver, a UAV ground control station (“
GCS”
) comprising a UAV autopilot system that permits manual override, a display system for displaying at least one of a position (x,y,z) and a velocity vector for the UAV and for displaying at least one of a position and a velocity vector for at least one radar detected airborne target (“
RDAT”
), and a computer that is programmed;
(i) to execute a radar data routine that receives and processes data from the ground-based radar, identifies at least one RDAT and estimates position coordinates and velocity for the at least one RDAT for at least first and second times of estimation;
(ii) to execute a UAV computation routine that receives global positioning system (“
GPS”
) position and velocity data for the UAV from the UAV GCS and estimates position coordinates for the UAV for the at least first and second estimation times;
(iii) to execute an air traffic conflict routine that receives the estimated position and velocity coordinates for the at least one RDAT and for the UAV for the at least first and second times of the estimations, and determines if the UAV and the at least one RDAT will come within a selected threshold distance of each other within a selected time interval, determined with reference to the present time;
(iv) to execute an air traffic warning routine that issues at least one of a visually perceptible signal and an audibly perceptible signal indicating that the UAV and the at least one RDAT will come within the selected threshold distance of each other within the selected time interval; and
(v) to execute a georeferencing and interface routine that provides a geographical background map of a radar coverage area and that provides visually perceptible icons on the map representing the UAV position and the at least one RDAT position for at least one of the at least first and second estimation times.
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Abstract
The present invention is a Sense-And-Avoid Display System (SAVDS) that integrates airborne target position data from a ground-based radar with unmanned aerial vehicle (UAV) position data from the UAV ground control station (GCS). The UAV GCS receives the UAV position data from a global positioning system (GPS) element in the flight management autopilot system in the UAV. Using a high-resolution display, the SAVDS shows the GPS position of the UAV in relation to other radar-detected airborne targets operating in the same airspace. With the SAVDS co-located adjacent to the GCS computer controlling the UAV, the SAVDS instructs the UAV operator to change the heading and/or elevation of the UAV until any potential midair aircraft conflict is abated. The radar-detected airborne target data and the UAV GPS data are integrated and displayed with georeferenced background base maps that provide a visual method for tracking the UAV and for performing collision avoidance.
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Citations
3 Claims
-
1. A ground-based sense and avoid display system for an unmanned aerial vehicle (“
- UAV”
) comprising;a data transfer station, comprising a ground-based radar and a first spread spectrum transceiver that receives radar data from the radar and transmits the radar data; a data receiving ground station comprising a second spread spectrum transceiver that receives the radar data from the first transceiver, a UAV ground control station (“
GCS”
) comprising a UAV autopilot system that permits manual override, a display system for displaying at least one of a position (x,y,z) and a velocity vector for the UAV and for displaying at least one of a position and a velocity vector for at least one radar detected airborne target (“
RDAT”
), and a computer that is programmed;(i) to execute a radar data routine that receives and processes data from the ground-based radar, identifies at least one RDAT and estimates position coordinates and velocity for the at least one RDAT for at least first and second times of estimation; (ii) to execute a UAV computation routine that receives global positioning system (“
GPS”
) position and velocity data for the UAV from the UAV GCS and estimates position coordinates for the UAV for the at least first and second estimation times;(iii) to execute an air traffic conflict routine that receives the estimated position and velocity coordinates for the at least one RDAT and for the UAV for the at least first and second times of the estimations, and determines if the UAV and the at least one RDAT will come within a selected threshold distance of each other within a selected time interval, determined with reference to the present time; (iv) to execute an air traffic warning routine that issues at least one of a visually perceptible signal and an audibly perceptible signal indicating that the UAV and the at least one RDAT will come within the selected threshold distance of each other within the selected time interval; and (v) to execute a georeferencing and interface routine that provides a geographical background map of a radar coverage area and that provides visually perceptible icons on the map representing the UAV position and the at least one RDAT position for at least one of the at least first and second estimation times. - View Dependent Claims (2, 3)
- UAV”
Specification
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Current AssigneeStanley R. Herwitz
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Original AssigneeStanley R. Herwitz
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InventorsHerwitz, Stanley R.
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Primary Examiner(s)ARTHUR JEANGLAUDE, GERTRUDE
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Application NumberUS11/120,263Publication NumberTime in Patent Office861 DaysField of Search701/3, 701/120, 701/211, 701/215, 701/206, 701/207, 701/223, 701/200, 701/301, 340/901, 340/903, 340/425.5, 340/435, 340/426.19US Class Current701/301CPC Class CodesG01S 13/86 Combinations of radar syste...G01S 13/91 for traffic control G01S13/...G01S 7/003 Transmission of data betwee...G08G 5/0026 located on the groundG08G 5/0069 specially adapted for an un...
