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System for detecting personal GNSS jammers

一种信号干扰、干扰信号的技术，应用在无线电波测量系统、对通信的干扰、卫星无线电信标定位系统等方向，能够解决解决方案不合适、移动接收器实现复杂性等问题

Inactive Publication Date: 2018-09-04
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One solution to the above-mentioned problem consists in incorporating anti-jamming measures or jammer detection measures in all GNSS receivers intended for road use, however due to substantial impact in terms of implementation complexity on mobile receivers such a solution scheme seems to be inappropriate

Method used

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  • System for detecting personal GNSS jammers
  • System for detecting personal GNSS jammers

Examples

Experimental program
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Embodiment Construction

[0024] figure 1 The principle of the system for detecting GNSS jammers according to the invention is shown in diagram form. Vehicles VEH traveling along the road are equipped with GNSS signal receivers RSG, such as GPS, GALILEO or GLONASS receivers. The driver of the vehicle VEH tries to prevent the receiver RSG from receiving GNSS signals in order to avoid being geolocated. For this, he or she uses a personal jammer BRP capable of sending a jamming signal superimposed on the GNSS signal so that the GNSS signal cannot be used by the receiver RSG.

[0025] However, the jamming signal transmitted by the personal jammer BRP may have such a range that the jamming signal interferes with the reception of GNSS signals beyond the surroundings of the vehicle.

[0026] The object of the present invention is to detect and identify a vehicle VEH that transmits a jamming signal. To achieve this purpose, the invention proposes a system SDBR for detecting jammers placed in piles located n...

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Abstract

System for detecting GNSS signal jammers, which is intended to be positioned on a roadside, the system comprises a first device (MSG) for receiving a GNSS signal; a second device (DBR) that is configured to measure at least one characteristic of a received GNSS signal and to detect, on the basis of said at least one characteristic, interference in said GNSS signal caused by a jamming signal; a third device (FLASH) for triggering the capture of an image of the road if said GNSS signal is subject to interference caused by a jamming signal, the first device (MSG) being configured to receive, viaa radio link, a sequence of a satellite radio navigation signal received by a vehicle (VEH) and retransmitted by said vehicle (VEH) to the system (SBDR) via the radio link.

Description

technical field [0001] The present invention relates to the field of systems for detecting GNSS jammers, in other words systems whose purpose is to detect the transmission of jamming signals intended to interfere with the reception of satellite radionavigation signals (GNSS signals). Background technique [0002] More specifically, the invention relates to detecting personal GNSS jammers used by car drivers and truck drivers that prevent geolocation of their vehicles. Specifically, some professional (for example, a truck or taxi driver, or the driver of a transport vehicle) is required to install on the vehicle a device that geolocates the vehicle based on the received GNSS signals and then places the vehicle The location is sent to the remote server. Although geolocation of the vehicle is necessary during working hours, some drivers use personal GNSS signal jammers to prevent geolocation of their vehicles outside of working hours. [0003] GNSS signal jammers send signals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21
CPCG01S19/21G01S19/14G01S7/022H04K3/90H04K3/22
Inventor M·雷沃尔J-G·布莱特
Owner THALES SA