Narrow-band electromagnetic radiation source target positioning method

An electromagnetic radiation source and target positioning technology, applied in positioning, radio wave measurement systems, measuring devices, etc., can solve problems such as poor positioning accuracy, achieve high positioning accuracy, high-precision positioning, and reduce volume and cost.

Pending Publication Date: 2019-11-12
10TH RES INST OF CETC
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention aims at the defects of poor positioning accuracy of narrow signal bandwidth electromagnetic radiation sources by space-based and space-based electromagnetic environment monitoring platforms, and provides a method with high positioning accuracy, high stability, and less resource consumption, which can simplify the target positioning of electromagnetic radiation sources for detection equipment method

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  • Narrow-band electromagnetic radiation source target positioning method

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Embodiment Construction

[0017] refer to figure 1 . According to the present invention, an electromagnetic environment monitoring system is composed of two monitoring platforms A and B, and both monitoring platforms A and B use electromagnetic signal receiving antennas to capture radiation signals from ground targets, and perform analog frequency conversion on the signals through their respective radio frequency channels , filter, and amplify the output to the respective acquisition modules, and perform analog-to-digital AD sampling and digital frequency conversion on the single-channel analog signal output by the receiving channel; the AD sampling data is digitally channelized in the FPGA to preprocess and output baseband IQ data; monitoring platform A The IQ data collected by the monitoring platform B and the monitoring platform B are summarized in the monitoring platform B, and the correlation processing is carried out; after the correlation is completed, the signal frequency difference is measured...

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Abstract

The invention discloses a narrow-band electromagnetic radiation source target positioning method, and aims to provide, for electromagnetic environment monitoring equipment, an electromagnetic radiation source positioning method which can simplify detection equipment, is small in positioning errors, is high in stability, and is less in resource consumption. The method of the invention is realized through the following technical solution: in an electromagnetic environment monitoring system formed by more than two electromagnetic environment monitoring platforms, collection modules carry out AD sampling and digital frequency conversion on analog signals which are of an electromagnetic radiation source target and are output by receiving modules; digital channelization pre-processing is carriedout in an FPGA to output base-band IQ data; frequency difference of reaching the two platforms by signals of the electromagnetic radiation source target is measured; searching geography space grid points are divided on the basis of a region where the electromagnetic radiation source is possibly located; a correlation degree of the electromagnetic radiation source at each possible grid point is calculated through frequency difference accumulation of multiple measurement; and a grid point corresponding to a maximum searching correlation degree value is used as an electromagnetic radiation source position for output, and high-precision positioning of an electromagnetic radiation source is realized.

Description

technical field [0001] The invention relates to a method for geographically positioning the electromagnetic radiation signal based on the frequency difference of the electromagnetic radiation signal for the ground electromagnetic radiation signal. Background technique [0002] With the development of science and technology, people have found that the relationship between human beings and the electromagnetic environment is very close, and human beings have to live in a certain intensity of electromagnetic field. Electromagnetic radiation refers to the flow of energy propagating through space in the form of electromagnetic waves, and is limited to non-ionizing radiation. Electromagnetic radiation sources refer to various antennas, wiring, structural parts, components, components, etc. that generate electromagnetic waves. According to the reasons for their generation, they can be divided into two categories: natural generation and artificial generation. According to the differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/04
CPCG01S5/04
Inventor 张宇阳
Owner 10TH RES INST OF CETC
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