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Phase interferometer based on broadband conformal antenna array and parameter estimation method thereof

A phase interferometer, conformal antenna technology, applied in the directions of antenna arrays, antennas, antenna grounding devices, etc., can solve problems such as narrow operating bandwidth, inability to determine antenna array parameters, and no formula to give the analytical relationship of antenna array parameters.

Active Publication Date: 2017-05-10
HARBIN INST OF TECH AT WEIHAI
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  • Abstract
  • Description
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Problems solved by technology

Disadvantages are: narrow working bandwidth and low direction finding accuracy
The existing interferometer design method does not have a formula to give the analytical relationship between the antenna array parameters and the direction-finding performance indicators. The design process is carried out in an iterative manner of "selection-verification", and it is impossible to directly determine the antenna array parameters according to the requirements of the indicators.

Method used

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  • Phase interferometer based on broadband conformal antenna array and parameter estimation method thereof
  • Phase interferometer based on broadband conformal antenna array and parameter estimation method thereof
  • Phase interferometer based on broadband conformal antenna array and parameter estimation method thereof

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Embodiment

[0123] The present invention designs a specific broadband Vivaldi antenna array structure device conformal to the radome, uses full-wave electromagnetic simulation software to simulate the performance of the antenna array, and performs full polarization based on the actual full-wave electromagnetic simulation data results The simulation experiment of the signal source parameter estimation algorithm verifies the feasibility and effectiveness of the algorithm proposed by the present invention.

[0124] The invention first uses CST software to simulate and design the planar Vivaldi antenna, and then conforms it to the existing missile radome to estimate the radiation performance. The thickness of the dielectric substrate selected in this report is 4.1 mm, the relative permittivity is 3.2, the thickness of the copper foil on the dielectric is 0.5 mm, and other relevant geometric parameters are: AR=90°, DSL=6mm, H=70mm, L= 40mm, LG=60mm, LTA=16m, LTC=6mm, RR=10mm, WSL=2mm, WST=11mm...

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Abstract

The invention discloses a phase interferometer based on a broadband conformal antenna array and a parameter estimation method thereof. The phase interferometer is characterized by comprising a five-unit Vivladi conformal antenna array, a streamline ceramic antenna housing and a metal connecting ring on the antenna housing, wherein the number N of antenna units of the five-unit Vivladi conformal antenna array is 5, each unit is shaped on the surface of the antenna housing, the antenna units and the antenna housing are conformal, and the units are arranged circumferentially to form a ring array. The phase interferometer is suitable for a missile-borne passive direction finding system, and the estimation algorithm for electromagnetic parameters of radiation source signals is also applicable in relevant fields of electronic reconnaissance, electronic countermeasure and the like and has more comprehensive parameter measurement performance and platform adaptability.

Description

Technical field: [0001] The invention belongs to the technical field of a broadband conformal antenna array sensor device and radiation source parameter estimation thereof, in particular to a phase interferometer based on a broadband conformal antenna array and a parameter estimation method thereof. Background technique: [0002] In passive detection systems, including electronic systems such as radio navigation, electronic reconnaissance, electronic tracking and electronic countermeasures, a very important task is to determine the position of the target. There are many methods and types of direction finding, which can be roughly divided into two categories according to the direction diagram of the antenna. One is to use a certain directionality of a simple vibrator or antenna array to find direction; the other is to use system functions to find direction, and there is no special requirement for the antenna pattern. The former can find out the minimum induction voltage of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q1/48H01Q1/50H01Q21/00G01S3/46
Inventor 宋立众何露茜周辉媛李赛王永建
Owner HARBIN INST OF TECH AT WEIHAI
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