Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com