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Single dipole polarization sensitive rotation array DOA and polarization parameter joint estimation method

A polarization-sensitive and polarization-parameter technology, which is applied in the field of polarization-sensitive array signal processing, can solve problems such as increased channel inconsistency, increased system cost, and increased number of channels, achieving low cost and reduced scale

Inactive Publication Date: 2017-07-28
HARBIN ENG UNIV
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Problems solved by technology

However, in practical engineering applications, the increase in the number of array elements will also bring about the problem of increased channel inconsistency
And the increase in the number of array elements means the increase in the number of channels in the system, as well as the increase in the scale of the receiving system and signal processing system, which greatly increases the cost of the system

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  • Single dipole polarization sensitive rotation array DOA and polarization parameter joint estimation method
  • Single dipole polarization sensitive rotation array DOA and polarization parameter joint estimation method
  • Single dipole polarization sensitive rotation array DOA and polarization parameter joint estimation method

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Embodiment Construction

[0024] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0025] combine Figure 1-4 , a polarization-sensitive rotating array composed of two single-dipole antennas of the present invention includes two single-dipole antenna array elements conformal to the edge of the antenna dish, and the antenna dish rotates at a certain speed R (r / s) Uniform rotation, characterized in that the antenna disk is located in the xoy plane, and the single dipole antenna array element 1 and array element 2 are respectively placed on the positive semi-axis and negative semi-axis of the x-axis, and the distance from the coordinate origin is d. During the rotation of the antenna disk, the plane where the antenna disk is located is kept perpendicular to the rotation axis at all times; in order to ensure the stability of the sampling data, during the rotation of the array, the time delay Δτ between the selected two consecutive array elements is...

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Abstract

The invention is to provide a single dipole polarization sensitive rotation array DOA and polarization parameter joint estimation method. The method is characterized by, to begin with, carrying out mathematical modeling on an array receiving signal of a polarization sensitive rotation array; and then, modifying an expression of a steering vector in a spectral function of a MUSIC algorithm, thereby realizing joint estimation of incident signal DOA and polarization parameters by utilizing the MUSIC algorithm. The rotation array not only can be constructed by utilizing the single dipole polarization sensitive rotation array, but also can be constructed by utilizing any polarization sensitive antenna unit or combination, and has high portability. The array can effectively reduce the number of channels of the system, and greatly reduces cost of the system; and with fewer array elements, the problem of channel inconsistency due to larger number of array elements can be prevented effectively.

Description

technical field [0001] The invention relates to an array signal processing method, in particular to a polarization-sensitive array signal processing method. Background technique [0002] The joint estimation of DOA and polarization parameters based on polarization-sensitive arrays is an important research direction of array signal processing, and its main task is to estimate the incident direction and polarization state of signals received by polarization-sensitive arrays. Compared with the scalar-based array, the polarization-sensitive array can be sensitive to the DOA and polarization information of the incident signal at the same time, which increases the amount of available information and can effectively improve system performance. Therefore, how to use the polarization-sensitive array to estimate the DOA and polarization parameters of the incident signal is the basis for applying the polarization-sensitive array to the actual direction-finding system. [0003] The cho...

Claims

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Application Information

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IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 司伟建黄小梅吴娜曲志昱张春杰候长波
Owner HARBIN ENG UNIV
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