A GNSS interference source location method based on multi-node AGC
A positioning method and technology for interference sources, applied in the field of satellite navigation, can solve the problems of increasing the realization cost and cost of the positioning system, and achieve the effect of reducing the realization cost and cost, the realization cost is high, and the performance requirements are reduced
Active Publication Date: 2021-01-01
NAT UNIV OF DEFENSE TECH
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Both of these methods require network nodes to use professional high-end satellite navigation receivers, which increases the implementation cost and cost of the entire positioning system
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[0039]The technical scheme of the present invention will be further shown and explained below in conjunction with the accompanying drawings of the specification.
[0040]figure 1 It is a flowchart of a GNSS interference source location method based on multi-node AGC provided by the present invention. As shown in the figure, it includes the following steps:
[0041]Step S1, each network node monitors its own GNSS positioning result and AGC gain value in real time, and sends it to the server through the communication link
[0042]There are a total of N network nodes in the set position system, of which M network nodes can be positioned normally. The positioning results and AGC gain values of these M network nodes are respectively (xm,ym) And gm(m=1, 2,...,M). These monitoring results are sent to the server in real time via the communication link.
[0043]Step S2, the server estimates the received signal strength of each network node according to the AGC gain value
[0044]Taking network node m as ...
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The invention provides a GNSS (Global Navigation Satellite System) interference source positioning method based on multi-node AGC (Automatic Gain Control). The GNSS interference source positioning method comprises the following steps: firstly, monitoring respective GNSS positioning results and AGC gain values in real time through each network node in an interference source positioning system basedon a sensor network; sending the respective GNSS positioning results and AGC gain values of all the network nodes which can be normally positioned in the positioning system through a communication link; then estimating receiving signal strength of the network nodes corresponding to all the AGC gain values by a server according to the received AGC gain values; selecting L network nodes with the greatest receiving signal strength from all the network nodes, which can be normally positioned, through the server and constructing an interference source positioning equation group; finally, solving an interference source position through the server by adopting a Newton iteration method. According to the GNSS interference source positioning method provided by the invention, an interference sourceis positioned through an AGC monitoring result and a positioning result of each network node, the requirements on performance of the network nodes are reduced and the implementation cost and cost of the whole positioning system are reduced.
Description
Technical field[0001]The invention relates to the technical field of satellite navigation, in particular to a method for locating interference sources in a satellite navigation system, and more specifically to a GNSS interference source locating method based on a multi-node AGC (Automatic Gain Control, gain control system).Background technique[0002]Global Navigation Satellite System (GNSS) is the general term for various satellite navigation systems and their enhancement systems, including the GPS system in the United States, the GLONASS system in Russia, the Galileo system in Europe, and the Beidou system in my country, etc. . GNSS has the ability to provide accurate positioning, speed measurement and timing services for any person or object at any time, and has become an important spatial information infrastructure. Once GNSS is interfered, it will have a serious impact on many industries that rely on GNSS and are closely related to the national economy and people's livelihood. Wi...
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IPC IPC(8): G01S19/21G01S19/01
CPCG01S19/015G01S19/21
Inventor 陈飞强徐博楼生强倪少杰陈雷左勇孙鹏跃耿正霖谢郁辰
Owner NAT UNIV OF DEFENSE TECH