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Variable time sliding window calculation method

A technology of sliding window and calculation method, applied in the field of civil aviation ship information, can solve the problem of data deduplication, and achieve the effect of improving the success rate of receiving and preventing single-point receiving failures.

Inactive Publication Date: 2019-04-12
青岛民航凯亚系统集成有限公司
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the above problems of high cost and insufficient accuracy, the present invention provides a variable time sliding window algorithm, which is used to solve problems such as data fusion, data deduplication, and large data batch reading and writing caused by means of multi-point reception.

Method used

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  • Variable time sliding window calculation method

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Embodiment

[0034] 1 On the central station server: run five processes: Pre_Process process, Slidewin_Receive process, Slidewin_Check process, Slidewin_DBsync process, Slidewin_Logsync process, define three timers: Slidewin_Timer, DBsync_Timer, Logsync_Timer.

[0035] 2 The Pre_Process process is responsible for executing data reception and "message preprocessing strategy", which can include the following preprocessing strategies:

[0036] (1) Perform CRC check on the ADS-B / AIS message, discard the message if the check fails, and continue processing if the check succeeds.

[0037] (2) Preprocess the message time field. If the time expires, the message will be discarded, otherwise continue processing.

[0038] (3) Execute other preprocessing strategies.

[0039] 3 The Slidewin_Receive process is responsible for data fusion and data deduplication.

[0040] After the message is successfully processed by the Pre_Process process, it is forwarded to the Slidewin_Receive process.

[0041] Whe...

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Abstract

The invention provides a variable time sliding window calculation method. The variable time sliding window refers to a first in first out queue in the computer memory, and the queue is stored in a variable time period; a message received from a receiving station defines three timers on a central station server, namely Slidewin-Timer, DBsync-Timer, and Logsync-Timer; by controlling the triggering mode of the three timers, the problems such as data fusion, data de-duplication, and big data batch reading and writing caused by multi-point reception and the like are solved.

Description

technical field [0001] The invention relates to the field of civil aviation ship information, in particular to a calculation method of a variable time sliding window. Background technique [0002] Traditional navigation control mainly uses primary radar to monitor ships, but there are problems such as not being able to provide target ship identification, not being able to provide target ship navigation status information, being easily disturbed by sea waves and heavy rain, high equipment cost, and monitoring blind spots. Traditional air traffic control mainly uses secondary radar to monitor aircraft, which has problems such as small amount of target information, untimely update of information, high equipment cost, and monitoring blind spots. [0003] In the new navigation control, in order to overcome various problems existing in traditional aviation control and navigation control, ADS-B technology is used to monitor aircraft, and AIS technology is used to monitor ships. In...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/863G08G3/00G08G5/00
CPCG08G3/00G08G5/0095H04L1/0061H04L47/625
Inventor 刘晓疆陈涛陈晓刘青李坤张新华杨泉林
Owner 青岛民航凯亚系统集成有限公司
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