A Method of Radio Monitoring and Direction Finding

A technology of radio monitoring and radio signals, which is applied in radio wave measurement systems, orientators for determining directions, measuring devices, etc., and can solve problems such as unused radio direction finding fields, low antenna gain, and high requirements for component consistency

Active Publication Date: 2018-06-19
CHENG DU DIAN ZHEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. Although the minimum signal method has high direction finding accuracy, the direction finding sensitivity is not high
Because the pattern of a directional antenna changes steeply around the angle of minimum gain, but the antenna gain is low here
[0007] 3. The existing amplitude comparison method, the amplitude comparison is realized by the circuit, has high requirements for the consistency of the components, is difficult to debug, and can only perform real-time direction finding
But so far it has not been used in the field of radio direction finding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As a preferred embodiment of the present invention, this embodiment discloses:

[0037] A method for radio monitoring direction finding, comprising the steps of:

[0038] Receive radio signals through at least three directional antennas with known directional characteristics and fixed directions;

[0039] Receive radio signals through the monitoring and receiving equipment connected to the directional antenna one by one, and process the amplitude-frequency characteristics of the received radio signals into discrete scanning data, frequency scanning spectrum data, FFT spectrum data or digital scanning spectrum data;

[0040] Optimal modeling is carried out by a microprocessor, the azimuth of the radio signal is used as the decision variable, and the cumulative amount of the deviation between the measured signal strength of a specific frequency at different azimuths and the signal strength calculated according to the antenna direction characteristics is used as the object...

Embodiment 2

[0046] As another preferred embodiment of the present invention, this embodiment discloses:

[0047] A method for radio monitoring direction finding, comprising the steps of:

[0048] Receive radio signals through at least three directional antennas with known directional characteristics and fixed directions;

[0049] Receive radio signals through the monitoring and receiving equipment connected to the directional antenna one by one, and process the amplitude-frequency characteristics of the received radio signals into discrete scanning data, frequency scanning spectrum data, FFT spectrum data or digital scanning spectrum data;

[0050] Optimal modeling is carried out by a microprocessor, the azimuth of the radio signal is used as the decision variable, and the cumulative amount of the deviation between the measured signal strength of a specific frequency at different azimuths and the signal strength calculated according to the antenna direction characteristics is used as the ...

Embodiment 3

[0058] As another preferred embodiment of the present invention, this embodiment discloses:

[0059] A method for radio monitoring direction finding, comprising the steps of:

[0060] Receive radio signals through at least three directional antennas with known directional characteristics and fixed directions;

[0061] Receive radio signals through the monitoring and receiving equipment connected to the directional antenna one by one, and process the amplitude-frequency characteristics of the received radio signals into discrete scanning data, frequency scanning spectrum data, FFT spectrum data or digital scanning spectrum data;

[0062] Optimal modeling is carried out by a microprocessor, the azimuth of the radio signal is used as the decision variable, and the cumulative amount of the deviation between the measured signal strength of a specific frequency at different azimuths and the signal strength calculated according to the antenna direction characteristics is used as the ...

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PUM

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Abstract

The invention, which relates to the technical field of the radio monitoring direction finding, discloses a radio monitoring direction-finding method. A plurality of directional antennas having known direction characteristics are used for receiving radio signals and processing the received radio signals; data processing is carried out by using an optimization method; and radio direction finding and spectrum occupation situation monitoring of multiple frequencies and even lots of frequencies can be realized. The invention aims at providing an amplitude direction-finding system and method, wherein the system and method have advantages of high sensitivity and precision and fast speed and the component consistency requirement is low; and real-time monitoring on a radio signal can be realized. Therefore, real-time direction finding can be realized; and post direction finding can be carried out by using stored data. Radio frequency-spectrum monitoring and radio direction finding of lots of frequencies can be realized simultaneously by using one set of radio testing systems; and compared with the traditional way using two sets of devices to realize the two kinds of functions, the provided method enables the radio monitoring technology equipment cost to be saved. Accurate measurement of the signal intensity can be realized by multiple antennas; and the omnidirectional antenna is saved.

Description

technical field [0001] The invention relates to the technical field of radio monitoring and direction finding, and more specifically relates to a method for radio monitoring and direction finding. Background technique [0002] On the one hand, the development of society promotes the rapid development of the radio industry. As an important technical means for radio monitoring, technical investigation and electronic countermeasures, radio direction finding technology has attracted more and more attention from the industry. According to different direction finding principles, direction finding systems can be divided into amplitude method, phase method, Doppler method, time difference method and spatial spectrum estimation method, etc. [0003] The amplitude direction finding system is widely used in the field of radio direction finding because of its simple structure and stable performance. The amplitude method can be subdivided into the maximum signal method (also known as th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S3/36G01S3/48
CPCG01S3/36G01S3/48
Inventor 邱承跃白宇军
Owner CHENG DU DIAN ZHEN TECH
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