Multi-source heterogeneous flight accident track data fusion method

Abstract

The invention discloses a multi-source heterogeneous flight accident track data fusion method, relates to a flight accident data processing method and belongs to the technical field of data processing. The multi-source heterogeneous flight accident track data fusion method comprises the steps of firstly performing unified time reference correction on various data sources, then recognizing and eliminating abnormal flight data by using a wavelet algorithm, then performing data supplement on sparse flight parameter data by using a least square algorithm and flight dynamics model data, and finally performing heterogeneous fusion on a variety of heterogeneous flight data based on probabilistic graphical model method so as to generate a final flight accident track. Under the unified probabilistic framework, comprehensive data fusion is performed on the flight accident track by using different configurations and different sources of flight data and flight dynamics models of the corresponding aircraft models, and the estimation accuracy and the update frequency of the flight accident track are improved.

Description

Technical field [0001] The invention discloses a multi-source heterogeneous flight accident track data fusion method, relates to a method for processing flight accident data, and belongs to the technical field of data processing. Background technique [0002] For the analysis of the causes of aviation accidents, data such as flight data recorder (FDR), fast storage recorder (QAR), cabin sound recorder (CVR), air traffic control (ATC) radar, etc., these data have different forms, FDR and QAR The data is usually decoded into ASCII data form, CVR is sound information, and ATC radar data is video information. The physical properties, measurement range and accuracy between them are different, and traditional data fusion methods such as Kalman filtering cannot be used directly. For fusion, there is currently no unified mathematical tool and method for information fusion of heterogeneous data, and only analysis and algorithm design can be carried out for specific problems. And because ...

AI Technical Summary

Problems solved by technology

[0004] The invention purpose of the present invention is to aim at the deficiency of above-mentioned background technology, provides a kind of multi-source heterogeneous flight accident track data fusion method, has realized the unification of multi-source data frequency and data format, has solved the heterogeneity of flight accident data, Missing, sparse, abnormal and asynchronous technical problems that lead to inaccurate flight accident trajectory data

Images