A Calibration and Polarization Calibration Device and Measurement Calibration Method Used for Bistatic Radar Cross Section Measurement of Targets

A radar cross section, polarization calibration technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of increased system cost, easy competition, risk, and the system cannot work stably and normally.

CN104614715BActive Publication Date: 2017-01-25BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-01-25

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Abstract

The invention discloses a measurement calibration and polarimetric calibration device (BPARC) for a target bistatic radar cross section (RCS) and a measurement calibration method thereof. The device is a double-antenna active polarization radar calibration (PARC) device with a biaxial rotation control mechanism, can simultaneously solve the problems of target bistatic RCS calibration and target bistatic polarization scattering matrix measurement calibration under the bistatic scattering measurement condition. As the bistatic RCS measurement calibration device, the BPARC can overcome the defects of the existing technology and device and ensures the stability of an RCS calibration value under different bistatic angles. As the polarimetric calibration device for bistatic polarization scattering matrix measurement, the BPARC retains all advantages of the existing single-station polarimetric calibration PARC device and also can be used for bistatic polarimetric calibration. The functions of bistatic RCS calibration and bistatic polarimetric calibration of the traditional PARC are increased.
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Description

technical field

[0001] The present invention relates to the technical field of radar cross section (RCS) measurement and processing of targets, in particular to a calibration and polarization calibration device (abbreviated as BPARC) and its measurement which can be used for target bistatic radar cross section (RCS) measurement Calibration method. Background technique

[0002] The schematic diagram of the geometric relationship of the bistatic radar cross section (RCS) measurement is as follows: figure 1 shown. The bistatic radar equation can be expressed as:

[0003] P r = P t G t G r λ 2 ( 4 π ) 3 R t ...

Examples

Embodiment Construction

[0125] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0126] A schematic diagram of the overall structure of a calibration and polarization calibration device that can be used for target bistatic radar cross-section measurement and polarization calibration proposed by the present invention is as follows Figure 9 shown.

[0127] Figure 9 Among them, the dual-station scatterometry RCS calibration and polarization calibration device consists of a receiving antenna, a transmitting antenna, two azimuth-line-of-sight dual-axis rotation units, an azimuth rotation drive and controller, a pitch rotation drive and controller, a radio frequency combination, and a power supply combination , related matching installation interface and remote control interface and other functional modules. in:

[0128] Receiving and transmitting antenna: the receiving antenna is used to receive the radiation signal of the ...