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An Antenna Pointing Sensing Method Based on the Correlation Information of Cooperative Source Electromagnetic Wave Spatial Structure

A space structure and antenna pointing technology, applied in direction finders using radio waves, electrical digital data processing, special data processing applications, etc., can solve problems that affect popularization and application, large volume, and complex systems, and achieve cost reduction Effect

Active Publication Date: 2017-04-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The disadvantages are large volume, low precision, complex system and slow speed, which affect the popularization and application of this technology

Method used

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  • An Antenna Pointing Sensing Method Based on the Correlation Information of Cooperative Source Electromagnetic Wave Spatial Structure
  • An Antenna Pointing Sensing Method Based on the Correlation Information of Cooperative Source Electromagnetic Wave Spatial Structure
  • An Antenna Pointing Sensing Method Based on the Correlation Information of Cooperative Source Electromagnetic Wave Spatial Structure

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Embodiment Construction

[0024] The principle of the present invention will be described below.

[0025] The invention originates from the idea of ​​MIMO, that is, comprehensively utilizes the synergistic effect of multiple transmitting sources and receiving elements in space, time, frequency and polarization domains to optimize system performance.

[0026] First, the electromagnetic vector sensor receiving signal model is introduced. The receiving antenna is installed on the motion platform, which is a receiving unit of the electromagnetic vector sensor. The nth electromagnetic wave signal along -u n Direction propagation, such as figure 1 As shown in (a), n=0,1,2,...,N-1. Parameters for the direction of arrival of electromagnetic waves in space Indicates that θ n represents the elevation angle, Indicates the azimuth angle, -π / 2≤θ n ≤π / 2, but figure 1 (a) vector Using the polarization ellipse descriptor (γ n , η n ) represents the polarization properties of electromagnetic waves, suc...

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Abstract

The invention discloses a cooperation source electromagnetic wave space structure correlation information-based antenna pointing direction induction method and belongs to the fields of electromagnetic wave navigation and signal parameter estimation. The method comprises the steps of firstly determining a correlation matrix between each cooperation source wave structure vector and a signal source electromagnetic wave space structure; then receiving phase shift key control signals in the cooperation source by 1 antenna unit in a polarized sensitive electromagnetic vector sector so as to obtain the polarized oval dip angle of each signal; solving the included angle between each signal arrival vector and the antenna pointing direction according to the signal source electromagnetic wave space structure correlation matrix and the polarized oval dip angles thereof; converting an antenna pointing vector under a receiver coordinate system into a reference source wave structure coordinate system according to the polarized oval dip angle of each signal and the included angle between each signal arrival vector and the antenna pointing direction, and then converting into a geological coordinate system, thus finishing the sensing of the antenna pointing direction of the receiver. The cooperation source electromagnetic wave space structure correlation information-based antenna pointing direction induction method can replace sensors such as a magnetic heading sensor, a gravity direction sensor and a north seeker, and can also be applied to the heading / gesture measuring of a motion platform.

Description

technical field [0001] The invention relates to a method for sensing spatial parameters of a signal source, in particular to a method for sensing antenna pointing of a receiver based on the correlation information of the spatial structure of cooperative source electromagnetic waves, belonging to the fields of navigation and signal parameter estimation. Background technique [0002] Magnetic heading sensors are susceptible to interference, have low precision, and are limited in applicable environments. The measurement speed of the north finder is slow, and the structure of the north finder used on the moving platform is complex, involving inertial navigation sensors. Gravity sensors for motion platforms also involve inertial navigation sensors. Most of the heading and attitude information of the motion platform are obtained from the inertial navigation sensor and other information fusion. The currently used motion platform heading and attitude information system has a compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G01S3/02
Inventor 陈广东孙红梅陈智王雪孟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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