ADS-B ground station having monopulse direction finding function

A ground station, single-pulse technology, applied in the field of ADS-B ground stations, can solve problems such as inability to complete aircraft positioning, affecting flight safety, and wrong aircraft position information

Active Publication Date: 2017-01-04
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional ADS-B (1090MHz) ground stations rely on the intermittent broadcast of ADS-B OUT to monitor aircraft. If the aircraft is not equipped with ADS-B OUT equipment or the data of the on-boar

Method used

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  • ADS-B ground station having monopulse direction finding function
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  • ADS-B ground station having monopulse direction finding function

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Embodiment Construction

[0039] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0040] The invention principle of the present invention is to adopt four-element antenna array, its antenna pattern has a very wide beam in the direction of the surroundings, two adjacent antenna arrays form mutually overlapping antenna patterns, and their center lines are equally strong The signal direction deviates by the same angle. Calculate the amplitude difference between the two antenna arrays for the same signal of the transponder, and the angular position offset of the aircraft relative to the iso-strong signal can be obtained through the calculation of the amplitude difference. The sign of the amplitude difference is the deviation direction of the iso-strong signal relative to the target. The calculation and comparison of the signal am...

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Abstract

The invention provides an ADS-B ground station having a monopulse direction finding function. The ADS-B ground station comprises four directional antennas, four radio frequency transceiver assemblies and a ground station host, wherein the four directional antennas are respectively arranged in four directions of 0 DEG, 90 DGE, 180 DEG and 270 DEG, the four radio frequency transceiver assemblies are used for receiving radio frequency signals inducted by the directional antennas and sending the received signals to the ground station host, the ground station host is used for selecting the first strongest one and the second strongest one of the four paths of radio frequency signals to carry out differential calculation to acquire the angle information of sending parties of the radio frequency signals; if the radio frequency signals are response signals of A/C mode query signals, the distance information of the sending parties of the radio frequency signals are acquired according to the sending time of the A/C mode query signals and the reception time of the response signals; and the angle information and the distance information are integrated to generate the monitoring information. According to the ADS-B ground station, a signal amplitude comparison method is utilized to accomplish direction finding of an aircraft, distance finding is accomplished according to the receiving/sending signal time difference, and thereby positioning of the aircraft is accomplished.

Description

technical field [0001] The invention relates to an air traffic control monitoring technology for ensuring aircraft flight safety, belongs to the field of aviation technology, and particularly relates to an ADS-B ground station with a single pulse direction finding function. Background technique [0002] Traditional ADS-B (1090MHz) ground stations rely on the intermittent broadcast of ADS-B OUT to monitor aircraft. If the aircraft is not equipped with ADS-B OUT equipment or the data of the on-board positioning system is abnormal, the ADS-B ground station will not be able to complete The positioning of the aircraft or the occurrence of wrong aircraft position information will affect flight safety. Contents of the invention [0003] The invention purpose of the present invention is to provide a kind of ADS-B ground station with monopulse direction finding function, utilize signal amplitude ratio method to complete the direction finding to aircraft, complete ranging according ...

Claims

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Application Information

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IPC IPC(8): G01S5/00
CPCG01S5/0027
Inventor 胡德振李魏张俊强
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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