| 摘要 |
A technique for reducing altitude error involves determining a corrected altitude for an aircraft using forecast atmospheric pressure data available, for example, from a weather forecasting service. The forecast atmospheric pressure data includes, for a number of points in time and for a number of geographic locations, a set of pressure levels and corresponding altitude values. Altitude correction data is periodically calculated from the forecast atmospheric pressure data for each of a number of geographic grid points. Upon receiving aircraft position information and an aircraft altitude measurement for an aircraft, one or more of the geographic grid points corresponding to the aircraft position are identified, and a corrected altitude of the aircraft is determined based on the altitude correction data of the one or more geographic grid points. ALTITUDE CORRECTION 114 FORECAST ATMOSPHERE DATA GENERATOR PROCESSOR PRESSURE DATA (RUC HGT) 1/0 INTERFACE - -16 112 STORAGE AIRCRAFT 124 |
