System and method for merging meteorological data predicted and measured on an aircraft
AssigneeThales
InventorsPhilippe Chaix, Alex Bourdon, Alexandre Grattard
Life of this patent
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Abstract
The invention consists in merging together the predicted and measured meteorological data to supply them to the flight prediction calculation system so as to smooth the discontinuities brought about in the prior art by the simple update which is carried out. This merging is advantageously done by linear weighting of the data, the weighting coefficient depending upon the positioning in vertical and horizontal distances between the predicted point and the aeroplane in relation to chosen thresholds.
Claims10
A system for calculating flight predictions of an aircraft, the system comprising:
- at least one sensor configured to capture first atmospheric data (WM, TM) in the vicinity of the aircraft;
- an interface to a computing capability configured to input second atmospheric data (WF, TF) at waypoints in front of the aircraft;
- and
- said computing capability being configured to merge said first and second atmospheric data into third atmospheric data (W, T) for calculating flight predictions which are substantially continuous from one leg of said flight predictions to another leg in front of the aircraft, wherein said first and second atmospheric data are merged by calculating a linear weighting of the first and second atmospheric data according to coefficient K and formulae W=WM×(1−K)+WF×K and T=TM×(1−K)+TF×K, and wherein said coefficient K is a function of values of projected horizontal X and vertical H distances between a predicted point and a position of the aircraft in relation to predetermined thresholds Da, Db, Ha, Hb.
A method for calculating flight predictions of an aircraft, the method comprising:
- capturing, at least one sensor, first atmospheric data (WM, TM) in the vicinity of the aircraft;
- inputting, using an interface to a computing capability, second atmospheric data (WF, TF) at waypoints in front of the aircraft;
- and
- merging, using said computing capability, said first and second atmospheric data into third atmospheric data (W, T) for calculating flight predictions which are substantially continuous from one leg of said flight predictions to another leg in front of the aircraft, wherein said first and second atmospheric data are merged by linear weighting of the first and second atmospheric data according to coefficient K and formulae W=WM×(1−K)+WF×K and T=TM×(1−K)+TF×K, and wherein said coefficient K is a function of values of projected horizontal X and vertical H distances between a predicted point and a position of the aircraft in relation to predetermined thresholds Da, Db, Ha, Hb.
Dependencies are inferred from the claim text.