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Radiation source positioning device and method based on UAV (Unmanned Aerial Vehicle) platform loaded with co-prime linear array

A positioning method and unmanned aerial vehicle technology, applied in positioning, measuring devices, radio wave measurement systems, etc., can solve the problems of unable to adapt to the coverage area, unable to receive radio interference signals, and decreased accuracy of direction finding and positioning

Inactive Publication Date: 2019-10-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the search for interference sources mostly uses directional antennas, relying on fixed monitoring stations, mobile monitoring vehicles and other monitoring modes for investigation, which lacks flexibility, and its direction finding and positioning accuracy will be greatly reduced when encountering buildings or complex geographical environments. When the monitoring platform is located at a low position, it cannot even receive radio interference signals, and its coverage area cannot adapt to the development of modern communication services. Therefore, it is urgent to solve the radio monitoring work in such a complex electromagnetic environment

Method used

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  • Radiation source positioning device and method based on UAV (Unmanned Aerial Vehicle) platform loaded with co-prime linear array
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  • Radiation source positioning device and method based on UAV (Unmanned Aerial Vehicle) platform loaded with co-prime linear array

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Embodiment Construction

[0066] The present invention is described in further detail now in conjunction with accompanying drawing.

[0067] Symbol means: (·) T with(·) H Indicate matrix transpose and conjugate transpose respectively, uppercase letter X indicates matrix, lowercase letter x indicates vector, ||·|| 1 and||·|| 2 Respectively represent l 1 and l 2 Norm, E(·) is the statistical expectation operator, Indicates the Khatri-Rao product, Indicates the Kronecker product, angle(·) indicates the phase angle, I M Represents an identity matrix whose dimension is M×M.

[0068] The radiation source positioning device based on the unmanned aerial vehicle platform loaded with coprime linear arrays of the present invention is mainly divided into two parts, namely the unmanned aerial vehicle platform and the ground analysis terminal. The basic structure is an unmanned aerial vehicle, which is the main carrier and supporting platform of the device.

[0069] The UAV platform is highly integrated w...

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Abstract

The invention discloses a radiation source positioning device and method based on a UAV (Unmanned Aerial Vehicle) platform loaded with a co-prime linear array. The invention relies on the UAV platform, fully combines the advantages of air detection maneuverability and high precision of array positioning, integrates the air search and positioning functions, utilizes a spectrum monitoring module tocollect the spectrum data in real time, performs signal processing on the received data of the loaded array, and combines the high-precision co-prime array spatial spectrum estimation algorithm to quickly search and accurately locate the incoming wave direction of the radiation source. The invention provides a new idea for the radiation source direction finding based on the air platform, can realize the high-precision positioning of the radiation source by using the UAV combined with the co-prime array, and aims to break through the limitations of the conventional radiation source searching and positioning method and overcome the key technologies thereof, so as to assist with radio monitoring and interference investigation.

Description

technical field [0001] The invention belongs to the technical field of direction finding of wireless radiation sources, and in particular relates to a radiation source positioning device and method based on an unmanned aerial vehicle platform loaded with coprime linear arrays. Background technique [0002] With the rapid development and diversified applications of wireless transmission and wireless communication technology, higher requirements are put forward for radio monitoring work. Illegal radio will affect the lives of the people, threaten the safety of civil aviation flight, aggravate electromagnetic pollution, and even endanger national security. At present, the search for interference sources mostly uses directional antennas, relying on fixed monitoring stations, mobile monitoring vehicles and other monitoring modes for investigation, which lacks flexibility, and its direction finding and positioning accuracy will be greatly reduced when encountering buildings or com...

Claims

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Application Information

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IPC IPC(8): G01S5/06
CPCG01S5/06
Inventor 沈金清张小飞吴伟何益汪云飞戴祥瑞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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