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Method for identifying A/C mode response signals of airborne transponder

An identification method and a technology for responding to signals, which are applied in the field of digital reality, can solve the problems of complex monitoring scenarios and the inability of monitoring methods to adapt to the monitoring of busy airport scenes, and achieve the effect of improving signal identification efficiency and positioning accuracy, large application prospects and use value

Active Publication Date: 2012-07-04
WISESOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the scene monitoring of busy airports, due to the existence of various moving targets such as airplanes, shuttle buses, luggage carts, and staff, the monitoring scene is more complicated, and some areas have monitoring blind spots due to buildings and other reasons. Conventional monitoring methods Unsuitable for scene surveillance at busy airports

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  • Method for identifying A/C mode response signals of airborne transponder
  • Method for identifying A/C mode response signals of airborne transponder
  • Method for identifying A/C mode response signals of airborne transponder

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Embodiment Construction

[0023] Airborne reply A / C pulse coding rules:

[0024] The technical solution of the invention is to analyze the physical meaning of the A-mode code and the C-mode height sent by the transponder, and apply clear identification rules to classify, so as to obtain the final identification classification. The basic content used for identification is described in detail below.

[0025] The Mode A code and Mode C altitude pulse sequence sent by the airborne transponder are as follows: figure 1 shown.

[0026] All information pulses are contained between the F1 pulse and the F2 pulse. F1 and F2 are called frame pulses. The SPI pulse is located 4.35 microseconds after the F2 pulse. It only appears in the A mode code. The pilot can set whether the transponder is Send this pulse. The width of each information pulse in the frame pulse is 0.45 microseconds, and the rising edges of two consecutive pulses are separated by 1.45 microseconds. The frame pulse must be present in every reply...

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Abstract

The invention discloses a method and technology for identifying A / C mode response codes transmitted by an airborne transponder, and the technology has an important application value in the fields of civil aviation multi-point positioning, monitoring and the like. The A / C mode response messages transmitted by the airborne transponder are in the same format. Based on encoding rules of the A / C mode response signals and physical significances of application, the invention provides a pertinent identification method to solve the problems of the identification of A / C mode response codes and improves the operating accuracy and reliability of the multi-point positioning system.

Description

technical field [0001] The present invention relates to the positioning and monitoring technology in the air monitoring system of civil aviation airports, air routes / routes, in particular to the core technology in the field of passive monitoring by using the A / C mode response signal of the airborne transponder, such as realizing the multi-point positioning of the airport scene monitoring In the monitoring system, its central processing station needs to complete the identification of the airborne A / C / S mode response signal sent by each receiving station, and realize the method of time difference calculation and target positioning by the identified signal. Background technique [0002] In the air surveillance of civil aviation airports, air routes / routes, active surveillance is mainly achieved by ground-based secondary air traffic control radar surveillance systems or air-based satellite surveillance and communication systems. However, for the scene monitoring of busy airports...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/91G01S13/74
Inventor 王运锋潘卫军
Owner WISESOFT CO LTD