Attitude-measurable and adjustable polarized radar passive calibrator and radar calibration method

A technology of polarized radar and calibrator, which can be used in instruments, radio wave measurement systems, etc., and can solve problems such as inapplicability of polarized radar.
CN112698287AActive Publication Date: 2021-04-23NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2021-04-23

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Abstract

The invention relates to an attitude-measurable and adjustable polarized radar passive calibrator and a radar calibration method. The polarized radar passive calibrator comprises an air maneuvering platform, control equipment of the air maneuvering platform, a dihedral angle and MEMS inertial navigation equipment, wherein the dihedral angle and the MEMS inertial navigation equipment are installed on the air maneuvering platform. The position and attitude of a dihedral angle on an air maneuvering platform are adjusted through control equipment, relative attitude measurement data of the dihedral angle relative to a polarized radar are obtained through MEMS inertial navigation, and the polarized radar is calibrated by the control equipment based on a polarized radar passive calibration technology according to the relative attitude measurement data. The polarization scattering matrix of the radar calibrator can be accurately obtained, ground clutter interference can be avoided by adjusting the position of the calibrator, and the radar calibrator can be flexibly applied to polarization radar calibration in different environments.
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Description

technical field

[0001] The present application relates to the technical field of radar measurement, in particular to a polarimetric radar passive calibrator and radar calibration method with measurable and adjustable attitude. Background technique

[0002] Radar uses radio waves to detect and locate targets. It is not only used for military detection, but also increasingly widely used in national economic construction and various scientific researches. With the development of technology, the requirement for radar is not only the traditional measurement, but also accurate and clear measurement. Precision measurement has increasingly become the standard and premise of radar application. Polarization radar is currently a research hotspot in the world. Polarization is another important physical parameter of electromagnetic wave besides amplitude, phase and frequency, which characterizes the transmission characteristics of electromagnetic wave vector. Polarization information c...

Claims

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