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A Feature Recognition Method for Circular Circling in Trajectories

A feature recognition and circular technology, applied in scene recognition, character and pattern recognition, instruments, etc., can solve the problems of increasing the workload of air traffic controllers, affecting flight efficiency and flight regularity, so as to avoid manual recording and improve Operational efficiency and workload reduction effects

Active Publication Date: 2022-05-17
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The circling and waiting procedure ensures flight safety, but at the same time it also delays the air traffic process, affecting flight efficiency and flight regularity
The air traffic control units in all regions have carried out the recording work of circling and waiting events, which has increased the workload of air traffic controllers

Method used

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  • A Feature Recognition Method for Circular Circling in Trajectories
  • A Feature Recognition Method for Circular Circling in Trajectories
  • A Feature Recognition Method for Circular Circling in Trajectories

Examples

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with accompanying drawings and embodiments.

[0058] Specific steps are as follows:

[0059] 1. Input track

[0060] Enter the real trajectory data of a domestic flight arriving on August 17, 2019.

[0061] The trajectory approaches from northeast to southwest, including straight flight, left turn, right turn and a circular circle. It has various flight characteristics and is general, such as figure 2 as shown ( figure 2 The abscissa represents longitude, and the ordinate represents latitude). The trajectory data is shown in Table 1:

[0062] Table 1 Trajectory data

[0063]

[0064]

[0065]

[0066]

[0067] Note: The format of the recording time is year yyyy month mm day dd hour hh minute mm second ss, usually every 8-10 seconds.

[0068] 2. Setting parameters

[0069] 1. Threshold for entering a turn: It can be seen from Table 1 that when the aircraft is flying in a straight line...

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Abstract

The invention discloses a feature recognition method for circular circles in a track. According to the air traffic trajectory data of civil aviation aircraft recorded by air traffic control secondary radar, the method analyzes the heading information of each trajectory in turn, and proposes a method for automatically identifying the circular circling feature in the trajectory. The recognized circular circling features include: circling start track, circling end track, circling waiting time and circling circle number. Compared with the existing method, the present invention has two advantages: first, by adjusting four self-defined parameters, the method is applicable to the situation of low-quality data such as noise tracks and recording errors in the trajectory, and has strong robustness; second, This method realizes the automatic recognition of circular circling features in trajectory data, avoids manual recording in traditional methods, effectively reduces the workload of air traffic controllers, and improves operational efficiency.

Description

technical field [0001] The invention relates to data mining in traffic management in civil aviation, in particular to a feature recognition method for circular circles in a trajectory. Background technique [0002] In air traffic control work, in order to ensure sufficient separation between the front and rear civil aviation aircraft, the controller often directs the following aircraft to circle and wait. Specific reasons for circling and waiting generally include flow control, airports, fuel dumps, weather, airspace, military activities, and special circumstances. One of the common hovering waits is the circular hovering. [0003] In the mass surveillance trajectory data of civil aviation aircraft, the number of circling and waiting trajectories is very small, and compared with the general trajectory which is usually composed of straight lines and turns, the characteristics are significantly different, which belongs to abnormal trajectories. However, the research on abnor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/422G06V20/00
CPCG06V20/13G06V10/40G06V10/422
Inventor 孙石磊王超
Owner CIVIL AVIATION UNIV OF CHINA
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