Flight error real-time evaluation method based on actual navigation performance

Abstract

The invention discloses a flight error real-time evaluation method based on actual navigation performance. The method comprises the steps of 1, acquiring real-time position longitude and latitude of an aircraft and longitude and latitude data of a starting point and a terminating point of an expected flight segment; 2, converting the latitude and longitude coordinates into coordinates under a Miller coordinate system; 3, calculating a projection point of the real-time position of the aircraft on the expected flight segment; 4, converting the coordinates of the projection point into latitude and longitude coordinates; 5, calculating the longitude difference and the latitude difference between the real-time position longitude and latitude of the aircraft and the coordinates of the projection point; 6, calculating an actual navigation performance value by using the latitude and longitude difference between the actual position and the expected position of the aircraft; 7, calculating a total system navigation error according to a total system navigation error calculation formula; and 8, comparing the total system navigation error with the RNP value of the flight segment where the aircraft is located to complete real-time evaluation of the flight error. The invention provides a method for real-time evaluation of flight errors in the flight simulation process. The method can be used for the problems of flight program rationality verification and the like.

Description

Technical field [0001] The present invention relates to the field of navigation performance monitoring, and is specifically based on real-time assessment method of flight error of actual navigation performance. Background technique [0002] Navigation performance (RNP Required Navigation Performance) was presented by the Fair Air Navigation System (FANS, FUTURE Air Navigation Systems), which was defined in the RNP manual issued by ICAO in 1994 in 1994. : The aircraft requires the desired navigation performance accuracy at a determined route, airspace or region. The RNP is determined by the description of navigation precision to run the required navigation performance in a certain airspace, but the RNP has related requirements for the aircraft airborne navigation equipment, but also has certain requirements for navigation system support for the corresponding RNP type airspace, RNP type It is represented by a corresponding precision value. [0003] Define different levels of RNP ty...

AI Technical Summary

Problems solved by technology

[0012] However, the current research on flight error algorithms is either limited to the theoretical research stage, or the flight data samples used in the algorithm verification stage are few, the verification of flight error data in different flight states is not considered enough, and the flight error data in the flight simulation environment is lacking. Phase of Algorithm Validation

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