ADS-B data transmission method based on BLE

A data transmission method and ADS-B technology, applied in the field of ADS-B data transmission based on BLE, can solve the problems of high use cost, inability to fully utilize ADS-B information, and huge information display equipment, so as to reduce the use cost and The effect of power consumption

Pending Publication Date: 2020-02-11
BEIHANG (SICHUAN) WESTERN INT INNOVATION PORT TECH CO LTD
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Problems solved by technology

[0004] In the traditional ADS-B system, after the information is transmitted to the ground station, it is handed over to the ground station for display or other follow-up processing. The information display equipment is huge and the cost of use is high, making it impossible to lay on a large area, and the ADS-B information cannot be fully use

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  • ADS-B data transmission method based on BLE

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Embodiment Construction

[0019] The specific technical solutions of the present invention are described in conjunction with the examples.

[0020] The length of different types of ADS-B messages that need to be transmitted is 20-30 bytes. In view of the existing typical BLE transparent transmission scheme, a single frame of data can only transmit a maximum of 20 bytes. Define the BLE data frame The structure is shown in Table 1. By setting the frame data receiving module, frame data buffer module, message synchronization detection module and message decoding module, different types of ADS-B messages can be received and processed in real time.

[0021] Table 1: BLE data frame structure

[0022] data item Header Length No. type Data CheckSum type of data Uint16 Uint16 Uint8 Uint8 Data Uint16 length 2 2 1 1 Length-8 2

[0023] According to the GATT protocol, this method uses the GATT_Notification method to send data, and sets a verification mechanis...

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Abstract

The invention provides an ADS-B data transmission method based on BLE, and the method comprises the following steps that 1, a message receiving module sets a buffer pool, and splices transparent transmission data, not greater than 20 bytes, of each frame received from an ADS-B information module to the tail part according to a receiving sequence; 2, the initial state of the message synchronizationdetection module is statu0, and corresponding operation is carried out according to different states after single-frame data is received; and 3, the message data obtained in the step 2 is verified, if the verification is successful, the message data is submitted to a message decoding module for decoding, otherwise, a message number which fails to be verified to the forwarding device is fed back,and the message is resent. By adopting the ADS-B data transmission method based on BLE, ADS-B data information is transmitted through the BLE, and the BLE is widely popularized in mobile phone terminals containing iOS or Android systems, so that the method can be widely applied to typical scenes such as aircraft information display in mobile phone Apps and distributed collection of the ADS-B datainformation.

Description

technical field [0001] The method relates to the technical field of data transmission, in particular to a BLE-based ADS-B data transmission method. Background technique [0002] ADS-B system is an information system integrating communication and monitoring, which consists of three parts: information source, information transmission channel, and information processing and display. The main information of ADS-B is the aircraft's 4-dimensional position information (longitude, latitude, altitude and time) and other possible additional information (conflict warning information, pilot input information, track angle, route inflection point, etc.) and aircraft identification information and category information. In addition, some other additional information may also be included, such as heading, airspeed, wind speed, wind direction, and the temperature outside the aircraft. [0003] The information transmission channel of ADS-B is in the form of ADS-B message, broadcasted through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/80H04W28/06
CPCH04W4/80H04W28/065H04W28/06
Inventor 张学军黄如杨镇宇张维东
Owner BEIHANG (SICHUAN) WESTERN INT INNOVATION PORT TECH CO LTD
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