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A polarization calibration device and radar scattering polarization measurement system

A calibration and low-scattering technology, applied in the field of communication, can solve the problem of inconvenient adjustment of the roll angle of dihedral reflectors, and achieve the effect of convenient adjustment and low scattering effect

Active Publication Date: 2020-07-03
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a solution to the problem of inconvenient adjustment of the roll angle of the dihedral reflector when measuring the radar scattering characteristics.

Method used

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  • A polarization calibration device and radar scattering polarization measurement system
  • A polarization calibration device and radar scattering polarization measurement system
  • A polarization calibration device and radar scattering polarization measurement system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, a polarization calibration device provided by an embodiment of the present invention includes:

[0050] Low scattering carrier 101, dihedral reflector body 102 and rotating mechanism 103; wherein,

[0051] The bottom surface of the low-scattering carrier 101 is provided with a concave cavity 1011;

[0052] The concave cavity 1011 is used to connect with the support column of the external rotating platform;

[0053] The front end of the low-scattering carrier 101 is fixedly connected to the fixing part 1031 of the rotating mechanism 103;

[0054] The back side of the dihedral reflector body 102 is fixedly connected to the rotating part 1032 of the rotating mechanism 103;

[0055] The dihedral reflector body 102 can be rotated around the center line of the dihedral reflector body 102 under the action of external force, and the rotated dihedral reflector body 102 can make the rotating part 1032 and Relative rotation occurs between the fixed p...

Embodiment 2

[0058] Such as figure 2 As shown, a polarization calibration device provided by an embodiment of the present invention includes:

[0059] Low scattering carrier 101, dihedral reflector body 102, fixed part 1031 and rotating part 10332; wherein,

[0060] The bottom surface of the low-scattering carrier 101 is provided with a concave cavity 1011;

[0061] The concave cavity 1011 is used to connect with the support column of the external rotating platform;

[0062]The front end of the low-scattering carrier 101 is fixedly connected to the fixing part 1031;

[0063] The back of the dihedral reflector body 102 is fixedly connected with the rotating part 1032;

[0064] The dihedral reflector body 102 can be rotated around the center line of the dihedral reflector body 102 under the action of external force, and the rotated dihedral reflector body 102 can make the rotating part 1032 and Relative rotation occurs between the fixed part 1031, and when the external force disappears,...

Embodiment 3

[0066] The third embodiment is basically the same as the first embodiment, and the similarities will not be described again. The difference lies in:

[0067] The fixing part 1031 includes a cylindrical shaft, and the rotating part 1032 includes a hollow tube; or, the fixing part 1031 includes a hollow tube, and the rotating part 1032 includes a cylindrical shaft;

[0068] The dihedral corner reflector body 102 can rotate around the center line of the dihedral corner reflector body 102 under the action of external force, so that the cylindrical rotating shaft rotates in the hollow tube.

[0069] In the second embodiment, the rotating mechanism is composed of a hollow circular tube and a cylindrical rotating shaft, and the cylindrical rotating shaft is located in the hollow circular tube, and the low-scattering carrier and the dihedral reflector body can be realized by separating the hollow circular tube and the cylindrical rotating shaft of the rotating mechanism. Separation is...

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Abstract

The invention relates to a polarization calibration device and a radar scattering polarization measurement system, and the polarization calibration device comprises a low scattering carrier, a dihedral corner reflector body and a rotating mechanism, wherein the bottom surface of the low scattering carrier is provided with a cavity, and the cavity is connected with a supporting column of an external rotating rack. The front end of the scattering carrier is fixedly connected with a fixing portion of the rotating mechanism, and the back surface of the dihedral corner reflector body is fixedly connected with a rotating portion of the rotating mechanism. The dihedral corner reflector body can rotate around the axis of the dihedral corner reflector body under the action of an external force, andthe rotating dihedral corner reflector body can enable the rotating portion and the fixed portion to relatively rotate. When the external force disappears, the fixed portion and the rotating portionremain stationary to limit the relative position of the low scattering carrier and the dihedral corner reflector body. According to the technical scheme of the invention, the device can adjust the roll angle of a dihedral corner reflector more conveniently during the measurement of the scattering characteristics of a radar.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a polarization calibration device and a radar scattering polarization measurement system. Background technique [0002] At present, when measuring radar scattering characteristics, the dihedral reflector usually needs to be placed on the corresponding foam support, and the dihedral reflector is used as a standard body for phase calibration to measure the corresponding phase information; at the same time, in order to To obtain more accurate phase information, it is usually necessary to perform phase calibration separately when the roll angle of the dihedral corner reflector is in various states. [0003] However, the dihedral reflector is directly placed on the foam support, and it is inconvenient to adjust the roll angle of the dihedral reflector. [0004] Therefore, in view of the above deficiencies, it is necessary to provide a solution to the problem of inconvenient adj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S7/02
CPCG01S7/024G01S7/41
Inventor 赵轶伦汪勇峰白杨
Owner BEIJING INST OF ENVIRONMENTAL FEATURES