DocumentCode :
1468025
Title :
A Two-Phase Method of Detecting Abnormalities in Aircraft Flight Data and Ranking Their Impact on Individual Flights
Author :
Smart, Edward ; Brown, Dean
Author_Institution :
Inst. of Ind. Res., Univ. of Portsmouth, Portsmouth, UK
Volume :
13
Issue :
3
fYear :
2012
Firstpage :
1253
Lastpage :
1265
Abstract :
A two-phase novelty detection approach to locating abnormalities in the descent phase of aircraft flight data is presented. It has the ability to model normal time series data by analyzing snapshots at chosen heights in the descent, weight individual abnormalities, and quantitatively assess the overall level of abnormality of a flight during the descent to a given runway. The method models normal approaches to a given runway (as determined by the airline´s standard operating procedures) and detects and ranks deviations from that model. The approach expands on a recommendation by the UK Air Accident Investigation Branch to the UK Civil Aviation Authority. The first phase quantifies abnormalities at certain heights in a flight. The second phase ranks all flights to identify the most abnormal, each phase using a one-class classifier. For both the first and second phases, i.e., the support vector machine (SVM), the mixture of Gaussians and the K-means one-class classifiers are compared. The method is tested using a data set containing manually labeled abnormal flights. The results show that the SVM provides the best detection rates and that the approach identifies unseen abnormalities with a high rate of accuracy. The feature selection tool F-score is used to identify differences between the abnormal and normal data sets. It identifies the heights where the discrimination between the two sets is largest and the aircraft parameters most responsible for these variations. The method presented adds much value to the existing event-based approach.
Keywords :
aerospace computing; pattern classification; support vector machines; time series; F-score tool; SVM; UK Air Accident Investigation Branch; UK Civil Aviation Authority; United Kingdom; abnormality detection; aircraft flight data; aircraft flight descent phase; aircraft parameter; event-based approach; feature selection tool; individual flight impact; k-means one-class classifier; normal time series data; support vector machine; two-phase method; two-phase novelty detection approach; Air safety; Aircraft; Artificial intelligence; Fault diagnosis; Support vector machines; Training; Aircraft landing guidance; artificial intelligence; fault diagnosis; support vector machines (SVMs);
fLanguage :
English
Journal_Title :
Intelligent Transportation Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
1524-9050
Type :
jour
DOI :
10.1109/TITS.2012.2188391
Filename :
6168266
Link To Document :
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