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ADS-B (Automatic Dependent Surveillance-Broadcast) data fusion method and system

An ADS-B, data technology, applied in transmission systems, traffic control systems, radio transmission systems, etc., can solve the problems of data item differences, increase the complexity of ADS-B data, and affect the transmission speed of ADS-B data. Integrate the real effect of data items

Active Publication Date: 2015-09-30
CHENGDU CIVIL AVIATION AIR TRAFFIC CONTROL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. ADS-B data of the same aircraft may be received from several ADS-B ground stations
[0007] 2. Data broadcast by the same aircraft at the same time may be received at different time points from different ADS-B ground stations
[0008] 3. The data about the same aircraft received from different ADS-B ground stations at the same time may not be the broadcast data at the same time
[0009] 4. Receive data about the same aircraft at the same time from different ADS-B ground stations. Most of the data items in these data are broadcast by the aircraft. Under normal circumstances, each ADS-B ground station encapsulates the value are consistent; however, a small number of data items such as time are generated and encapsulated by the ground station, so these data items may have some differences
[0010] The above situations may cause duplicate and outdated data in the ADS-B packet data set, which not only affects the transmission speed of ADS-B data, but also increases the complexity of users using ADS-B data

Method used

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  • ADS-B (Automatic Dependent Surveillance-Broadcast) data fusion method and system
  • ADS-B (Automatic Dependent Surveillance-Broadcast) data fusion method and system
  • ADS-B (Automatic Dependent Surveillance-Broadcast) data fusion method and system

Examples

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Embodiment 1

[0047] Such as figure 1 As shown, the present embodiment provides a method for ADS-B data fusion including:

[0048] S0, obtain specific data received in a new round, that is, obtain all data about a specific target from the data received in a new round, and the source of the data comes from at least one ADS-B ground receiving station; the data may include information about a specific target Time scale, latitude and longitude, and the latitude and longitude information in the data can be mapped to distance information. Wherein, the specific target here refers to any target among all the targets that can be received by the ADS-B ground receiving station. For the convenience of expression, this embodiment assumes that the specific target is A.

[0049] Preferably, the target refers to the aircraft, and the aircraft generates accurate positioning information according to the airborne navigation equipment and the GNSS (global satellite navigation system, the abbreviation of Globa...

Embodiment 2

[0099] On the basis of the foregoing embodiments, this embodiment further optimizes the data fusion process, specifically, as Figure 8 As shown, steps are added relative to Embodiment 1:

[0100] S35, judging whether the data group g (or group g) is empty, if yes, execute step S31, if not, execute step S36.

[0101] S36. Initialize the fusion data (fused data), and all data items are empty; use the data items existing in the data to assign the data items corresponding to the fusion data.

[0102] S37. Determine whether the fusion data is complete, if it is complete, and the fusion data (fused data) is the final fusion data, then execute S41; otherwise, execute S38.

[0103] S38. Determine whether there is other data in the packet g, if not, execute S41; otherwise, execute S39.

[0104] S39. Remove a piece of data from the group g. For the convenience of expression, it is assumed to be a; execute S40.

[0105] S40, the fusion data inherits from data a the missing items of t...

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Abstract

The invention provides an ADS-B (Automatic Dependent Surveillance-Broadcast) data fusion method and system. The method comprises steps as follows: 1, all ADS-B data related to a specified target are acquired; 2, all data of the specified target are grouped according to preset attribute; 3, grouped data sets obtained after grouping are sequenced according to data groups; 4, whether data meeting requirements of the specified target are contained in a current data group in the grouped data sets obtained after grouping is judged sequentially, if yes, the step 5 is executed, and otherwise, whether required data are contained in the next data set in the grouped data sets is judged; 5, fusedata of the specified target are output from the current data set. Therefore, ADS-B data can be rapidly fused in the grouped data sets.

Description

technical field [0001] The invention relates to the technical field of air traffic control, in particular to an ADS-B data fusion method and system thereof. Background technique [0002] With the continuous development of my country's air transport industry and the increasing flight traffic, traditional surveillance facilities and technologies cannot meet the needs of the rapid development of air traffic control due to their defects such as low accuracy, narrow coverage, high operating costs, and insufficient security. . Automatic Dependent Surveillance-Broadcast (ADS-B) has outstanding advantages in terms of accuracy, reliability, integrity and operating costs due to its high data update rate and rich information on board and in the air. Become an important part of the new navigation system. [0003] Because the ADS-B system is superior to the traditional radar technology, the ADS-B technology has become a recognized technology trend at home and abroad, and the research on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185G08G5/00
CPCG08G5/0013H04B7/18506
Inventor 何金凤邱俊周自力李锐
Owner CHENGDU CIVIL AVIATION AIR TRAFFIC CONTROL SCI & TECH
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