Optimal Amplitude Radio Direction Finding Method

A radio direction finding and optimization technology, which is applied to direction finders using radio waves, radio wave direction/deviation determination systems, etc., can solve the problems of low direction finding sensitivity, low antenna gain, and steep changes, etc., to achieve measurement The effect of high direction accuracy, high direction finding sensitivity, and low consistency requirements

A radio direction finding and optimization technology, which is applied to direction finders using radio waves, radio wave direction/deviation determination systems, etc., can solve the problems of low direction finding sensitivity, low antenna gain, and steep changes, etc., to achieve measurement The effect of high direction accuracy, high direction finding sensitivity, and low consistency requirements

CN106199502BActive Publication Date: 2018-07-27CHENG DU DIAN ZHEN TECH
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] As a preferred embodiment of the present invention, this embodiment discloses:

[0027] Optimizing the radio direction finding method of ratio amplitude, comprising the following steps:

[0028] Data acquisition step: use a directional antenna with known directional characteristics and a directional antenna to test at no less than 3 obviously different azimuth angles to obtain antenna azimuth angles and corresponding signal strength data;

[0029] Modeling steps: Optimizing modeling, taking the radio signal azimuth as the decision variable, taking the cumulative amount of the deviation between the measured signal strength at a specific frequency and a specific instantaneous probability at different azimuths and the signal strength calculated according to the antenna direction characteristics As the objective function, an unconstrained nonlinear programming model is established;

[0030] Calculation steps of direction finding: calculate by optimization algorithm, solve ...

Embodiment 2

[0032] As another preferred embodiment of the present invention, this embodiment discloses:

[0033] Optimizing the radio direction finding method of ratio amplitude, comprising the following steps:

[0034] Data acquisition step: use a directional antenna with known directional characteristics and a directional antenna to test at no less than 3 obviously different azimuth angles to obtain antenna azimuth angles and corresponding signal strength data;

[0035]Modeling steps: Optimizing modeling, taking the radio signal azimuth as the decision variable, taking the cumulative amount of the deviation between the measured signal strength at a specific frequency and a specific instantaneous probability at different azimuths and the signal strength calculated according to the antenna direction characteristics As the objective function, an unconstrained nonlinear programming model is established;

[0036] Calculation steps of direction finding: calculate through the optimization alg...

Embodiment 3

[0040] As another preferred embodiment of the present invention, this embodiment discloses:

[0041] Optimizing the radio direction finding method of ratio amplitude, comprising the following steps:

[0042] Data acquisition step: use a directional antenna with known directional characteristics and a directional antenna to test at no less than 3 obviously different azimuth angles to obtain antenna azimuth angles and corresponding signal strength data;

[0043] Modeling steps: Optimizing modeling, taking the radio signal azimuth as the decision variable, taking the cumulative amount of the deviation between the measured signal strength at a specific frequency and a specific instantaneous probability at different azimuths and the signal strength calculated according to the antenna direction characteristics As the objective function, an unconstrained nonlinear programming model is established;

[0044] Calculation steps of direction finding: calculate through the optimization al...

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Abstract

The invention discloses an optimization amplitude comparison radio direction finding method and relates to the technical field of radio direction finding. According to the optimization amplitude comparison radio direction finding method, a directional antenna of which a direction characteristic is known is used for receiving radio signals at azimuth angles that are markedly different, the radio signals that are received are subjected to processing operation, and an optimization method is used for direction finding. A fixed antenna of a digital fluorescence frequency spectrum is used for radio direction finding in a pioneering manner, and problems of rapid direction finding of transient signals and co-frequency signals can be solved. An aim of the invention is to find a method for realizing synchronous broadband and multi-frequency direction finding as well as fluorescence frequency spectrum direction finding, wherein the method is high in sensitivity, high in accuracy and low in requirements for consistency of parts.

Description

technical field [0001] The invention relates to the technical field of radio direction finding, and more specifically relates to a radio direction finding method with optimized amplitude ratio. 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 the l...

Claims

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Application Information

Patent Timeline
27 Jul 2018
Publication
CN106199502B
IPC
G01S3/14
CPC
G01S3/14
Inventors
邱承跃; 白宇军