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Short-wave radio direction finding system and method based on irregular antenna array structure

A radio direction finding and antenna array technology, which is used in radio wave direction/bias determination systems, direction finders using radio waves, etc. question

Active Publication Date: 2018-11-30
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under complex terrain conditions such as mountains and hills, the short-wave radio direction-finding system cannot be deployed because it does not meet the site requirements for deploying antenna arrays, which limits the monitoring range of the short-wave radio direction-finding system

Method used

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  • Short-wave radio direction finding system and method based on irregular antenna array structure
  • Short-wave radio direction finding system and method based on irregular antenna array structure
  • Short-wave radio direction finding system and method based on irregular antenna array structure

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Embodiment 1

[0071] The embodiment of the present invention provides a short-wave radio direction-finding system and method with an irregular antenna array structure, which reduces the site requirements for deploying the antenna array and increases the monitoring range of the short-wave radio direction-finding system.

[0072] An aspect of the embodiments of the present invention provides a short-wave radio direction finding system with an irregular antenna array structure.

[0073] A schematic diagram of a short-wave radio direction-finding system with an irregular antenna array structure provided by an embodiment of the present invention is as follows figure 1 As shown, the system includes: an irregular antenna array and a direction-finding receiver, and the direction-finding receiver is connected with the irregular antenna array by cables.

[0074] The details of each section of the system are as follows:

[0075] (1) Irregular antenna array

[0076] An irregular antenna array, includ...

Embodiment 2

[0128] This embodiment provides a short-wave radio direction-finding system and method with an irregular antenna array structure. The overall structural diagram of the system is shown in figure 1 As shown, the system collects arriving signals through irregular antenna arrays, and transmits the arriving signals to the spatial spectrum calculation and processing module for processing.

[0129] According to specific terrain conditions, the irregular antenna array proposed in this embodiment can be deployed arbitrarily in a given three-dimensional space, such as figure 2 shown. In actual implementation, the position selection of the antenna unit can be determined according to the specific site conditions to achieve irregular deployment. Therefore, for the irregular antenna array proposed in this embodiment, the array structure is no longer specified by the designer, but randomly formed according to the terrain conditions of the deployment site.

[0130] The short-wave radio dir...

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Abstract

The embodiment of the invention provides a short-wave radio direction finding system and method based on an irregular antenna array structure. The system includes an irregular antenna array and a direction finding receiver, wherein the irregular antenna array includes M antenna units, is deployed at any location in a three-dimensional space, receives arrival signals, and transmits the arrival signals received by the M antenna units to the direction finding receiver for processing; and a signal sampling module of the direction finding receiver obtains an irregular antenna array signal in the form of a vector, transmits the signal to a spatial spectrum calculation processing module, obtains a noise subspace base vector through the irregular antenna array signal, and then constructs an irregular rotation vector for the given azimuth angle theta and pitch angle phi, and performs angle searching to obtain estimation results of the azimuth angles and the pitch angles of the arrival signals.The invention proposes an improved spatial spectrum algorithm suitable for the irregular antenna array, the arbitrary deployment of the antenna array is allowed, the height of different antenna unitsis also considered, and the performance of the algorithm is improved.

Description

technical field [0001] The invention relates to the technical field of radio monitoring, in particular to a short-wave radio direction finding system and method with an irregular antenna array structure. Background technique [0002] Direction finding and positioning for short-wave radio signals are important contents of radio monitoring and have important civilian and military values. With the increasing importance of marine resources, the monitoring of short-wave signals has become very important and urgent. [0003] The existing short-wave radio direction-finding technologies all use antenna arrays to measure the azimuth of incoming waves. According to the different technical systems adopted, the existing radio direction finding technology can be divided into two categories: traditional radio direction finding and space spectrum direction finding: traditional radio direction finding and space spectrum direction finding. [0004] The traditional radio direction finding s...

Claims

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Application Information

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IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 刘寅生李景春段洪涛李蓉范振雄鲍尧王文帅丛风光纽丽荣叶晓明
Owner BEIJING JIAOTONG UNIV
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