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Secondary radar improving aerial safety by extended range ads-b detection

A technology of ADS-B and secondary radar, which is applied in the field of civil and military air traffic control, and can solve unavoidable problems

Pending Publication Date: 2022-02-01
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, even if the first reply is received via the SUM pattern, the second reply will inevitably be received via the CONT pattern, therefore, ultimately in terms of the ADS-B receive chain integrated into the architecture of the secondary radar , limited to the extent of the CONT pattern

Method used

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  • Secondary radar improving aerial safety by extended range ads-b detection
  • Secondary radar improving aerial safety by extended range ads-b detection
  • Secondary radar improving aerial safety by extended range ads-b detection

Examples

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Embodiment Construction

[0048] figure 1 The steps for implementing the invention are shown. This implementation requires at least two steps. For this implementation, the present invention provides for the presence of an ADS-B detection function integrated into the secondary radar structure 101 including:

[0049] - Continuous detection 102 must be performed with very high sensitivity via the CONT_Front and CONT_Back pattern;

[0050] - But in addition, optionally, successive complementary detections via the pattern of the main lobe (detection 103 via the SUM pattern and detection 104 via the DIFF pattern) with a lower sensitivity of about 15 dB in order to link the CONT direction Antenna gain of the graphs (CONT_Front and CONT_Back) such that a gain gap occupying about 5° is inserted in the CONT graph on the antenna axis.

[0051] figure 2 and image 3 The antenna patterns involved are shown, at the receiving end at 1090MHz. figure 2 SUM, DIFF and CONT antenna patterns are shown for antennas ...

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Abstract

The invention relates to a secondary radar improving aerial safety by extended range ADS-B detection. The secondary radar includes an antenna having a radiation pattern forming a sum channel, designated SUM, a radiation pattern forming a difference channel, designated DIFF, and a pattern forming a control channel, designated CONT, the targets are located by implementing the following steps: detecting ADS-B squitters received via the CONT channel (102), via the SUM channel (103) and via the DIFF channel (104); measuring at least the power of the squitters and their azimuth (110) with respect to the radar; the location of a target transmitting ADS-B squitters being computed by exploiting at least the detection of one ADS-B squitter, in light of the latitudinal and longitudinal position of the radar and of the azimuthal measurement with respect to the radar, the position cell, designated the CPR cell, coded in the squitter being selected via the azimuthal measurement.

Description

technical field [0001] The present invention relates to the field of civil and military air traffic control (ATC). Background technique [0002] At present, air traffic control is mainly based on secondary radar, and its detection reliability is widely recognized. Secondary radar ensures synchronous monitoring of aircraft through SSR and Mode S protocols. In addition, the extended ADS-B message (ADS-B is an acronym for Automatic Dependent Surveillance-Broadcast (Automatic Dependent Surveillance-Broadcast)) aimed at collision prevention (TCAS: Traffic Alert and Collision Avoidance System) when implemented on an aircraft ( Messages are position information delivered by aircraft; they are not triggered in response to radar interrogation signals, but are sent automatically from aircraft transmitters) asynchronous reception is used by ground ATC to provide part of an interactive surveillance system. [0003] This surveillance can be combined with IFF (Identify Friend or Foe) typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/75G01S13/91
CPCG08G5/045G01S13/751G01S13/91G01S13/765G01S17/933G01S13/762G01S13/782G01S13/781G01S13/0218G01S13/767G01S7/021G01S13/933G08G5/04G08G5/0013G01S7/403G08G5/0008G08G5/0078
Inventor 菲利普·比约让-玛丽·潘尼尔
Owner THALES SA
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