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Full-polarized interferometer based on spatial sampling antenna array and parameter estimation method of interferometer

An antenna array and space sampling technology, which is used in instruments, radio wave measurement systems, direction-determining direction guides, etc., and can solve the problems of low direction-finding accuracy and narrow working bandwidth.

Active Publication Date: 2017-03-08
HARBIN INST OF TECH AT WEIHAI
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Problems solved by technology

Disadvantages are: narrow working bandwidth and low direction finding accuracy

Method used

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  • Full-polarized interferometer based on spatial sampling antenna array and parameter estimation method of interferometer
  • Full-polarized interferometer based on spatial sampling antenna array and parameter estimation method of interferometer
  • Full-polarized interferometer based on spatial sampling antenna array and parameter estimation method of interferometer

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Embodiment

[0094] The present invention adopts an interferometer direction-finding device arranged in a circular array and radially oriented for spatial sampling, and uses full-wave electromagnetic simulation software to simulate the performance of the antenna array. Based on the actual full-wave electromagnetic simulation data results, the The simulation experiment of the fully polarized signal source parameter estimation algorithm verifies the feasibility and effectiveness of the algorithm proposed by the present invention.

[0095] exist Figure 4 In the shown three-dimensional electromagnetic simulation model, port 1 to port 6 are defined, wherein port 1 and port 2 are Vivaldi antenna elements respectively, and port 3 to port 6 are logarithmic periodic antenna elements. The width of the logarithmic periodic antenna unit is about 66 mm, the overall height is about 67 mm, and the number of vibrators is 17. The vibrator with a meandering line structure is used in the low frequency band,...

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Abstract

The invention relates to the fields of a broadband full-polarized antenna array sensor device and a direction finding technology thereof, and especially to a full-polarized interferometer based on spatial sampling antenna array and a parameter estimation method of the interferometer, and the interferometer is used radio systems as radars and communication. The interferometer is characterized by using a six-unit ultra-wide-band linear polarization antenna array, two types of ultra-wide-band linear polarization antennas, namely ultra-wide-band log-periodic antennas and ultra-wide-band Vivaldi antennas are included, and the ultra-wide-band log-periodic antennas correspond radiation of a current source and the ultra-wide-band Vivaldi antennas correspond to radiation of a magnetic current source to reduce electromagnetic coupling among the units; and the amount of antenna units is 6, each antenna unit is of a linear-polarization antenna form, the units form a ring array, the six units of linear-polarization antennas are arranged in the radial manner according to a circular center, and the antenna units have spatial orientations different from one another. The interferometer and the parameter estimation method are suitable for spaceborne, airborne, missile-borne and other radio direction-finding systems, parameter measuring functions are more comprehensive, and the platform adaptability is higher.

Description

Technical field: [0001] The present invention relates to the technical field of broadband fully polarized antenna array sensor device and its direction finding, in particular to a fully polarized interferometer based on space sampling antenna array and its parameter estimation method which can be used in radio systems such as radar and communication . Background technique: [0002] Radio direction finding plays an important role in both military and civilian fields. In the military field, reconnaissance and positioning of radio radiation sources such as radar, communication, and measurement and control in military facilities such as ports, airports, warships, and missile launch sites is of great value for the implementation of targeted electronic interference and military strikes; in the civilian field, it can It plays an important role in traffic control, life rescue, radio spectrum management, monitoring of animal migration characteristics, etc. Phase interferometer dire...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/48
CPCG01S3/48
Inventor 宋立众周辉媛李赛何露茜王永建
Owner HARBIN INST OF TECH AT WEIHAI
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