A Multi-source Heterogeneous Flight Accident Track Data Fusion Method

A multi-source heterogeneous data and flight accident technology, applied in the field of flight accident data processing, can solve the problems of flight accident data heterogeneity, asynchrony, abnormality, etc.

Active Publication Date: 2020-04-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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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

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  • A Multi-source Heterogeneous Flight Accident Track Data Fusion Method
  • A Multi-source Heterogeneous Flight Accident Track Data Fusion Method
  • A Multi-source Heterogeneous Flight Accident Track Data Fusion Method

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Embodiment Construction

[0016] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0017] In the implementation process of multi-source data fusion, such as figure 1 As shown, there are several main steps required. Firstly, a unified time reference correction is performed on various data sources to ensure that various data are synchronized at each time sampling point; then, abnormal state data is performed on FDR data or QAR data. Then, use the flight dynamics model FDM of the corresponding aircraft type to trim the FDR data and the QAR data interruption position, and carry out necessary data supplementation. If the sampling points of some parameters of the FDR are too sparse, the Interpolation and FDM weighted average methods can be used to generate new data points; finally, the supplementary data and heterogeneous data such as CVR and ATC radar video data are heterogeneously fused to generate the final flight state estimator. T...

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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. Firstly, a unified time reference correction is performed on various data sources, and then the wavelet algorithm is used. Identify and eliminate abnormal flight data, and then use the least squares algorithm and flight dynamics model data to supplement the sparse flight parameter data. Finally, based on the probability graph model method, various heterogeneous flight data are heterogeneously fused to generate the final flight accident track. Under the uniform probability framework, the present invention uses flight data of different configurations and different sources, as well as the flight dynamics model of the corresponding model, to carry out comprehensive data fusion on the flight accident track, so as to improve the estimation accuracy and update of the flight accident track. frequency.

Description

technical field [0001] 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. Background technique [0002] For the analysis of the cause of aviation accidents, data such as flight data recorder (FDR), quick 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 are different between them, and traditional data fusion methods such as Kalman filtering cannot be directly used For fusion, there is currently no unified mathematical tool and method for information fusion of heterogeneous data, only for analysis and algorithm design for specific problems. And because many aviation accid...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06F30/15G06F30/20
CPCG06F30/15G06F30/20G06F18/25
Inventor 吴东苏李斌顾宏斌俞力玲钟民主
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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