Steel-belt-type detection device for evaluation of microwave flatness

Abstract

Disclosed is a steel-belt-type detection device for evaluation of microwave flatness. The steel-belt-type detection device for evaluation of microwave flatness comprises steel belt drive units, support stand pillars, transmission steel belts and a microwave detection platform. The support stand pillars are vertically fixed in the level surface; the top and the bottom of a vertical plane on the same side of two support stand pillars are respectively provided with a steel belt drive unit; each steel belt drive unit outputs a transmission steel belt; the steel belt drive units are connected with the transmission steel belts through the microwave detection platform; and the space position of the microwave detection platform is placed inside a space rectangular plane formed by rotating four steel belt drive units. Because the structural mode that the steel belts are connected in parallel to transmit is adopted, plane three-degree of freedom movement of a measuring probe is achieved. The steel-belt-type detection device for evaluation of microwave flatness is simple in structure and convenient to install and debug, greatly reduces quality of the whole mechanism and section scattering values of radar, and is capable of guaranteeing high measuring accuracy. The steel-belt-type detection device for evaluation of microwave flatness provides a solution which is high in accuracy, flexible and high-efficient for tests of microwave flatness in a compact range.

Description

technical field [0001] The invention relates to a steel belt-type detection device for evaluating microwave flatness, belonging to the field of microwave flatness detection. Background technique [0002] The compact field is the infrastructure for testing the reflection characteristics of the aircraft. Its main function is to convert the spherical wave emitted by the feed into a plane wave, forming a planar microwave test area with excellent performance, and meeting the requirements of the antenna radiation test and target radar cross-section scattering test. The flatness of microwaves formed in a compact field is one of its most important performance indicators. In order to measure this flatness, it is necessary to develop a special compact field scanning frame to scan and measure the amplitude and phase of the reflected plane wave point by point, so as to measure the flatness of the compact field. performance evaluation. At present, the detection motion of the microwave f...

AI Technical Summary

Problems solved by technology

In the actual design and use process, in order to ensure the accuracy of the probe and the reliability of the device, the structure of the moving support unit of the measuring probe must ensure a certain rigidity, which inevitably introduces a large structural weight; due to the increase in the structural mass of the moving unit of the probe , the weight of its installation base also increases, and sometimes the weight of the scanning frame in the compact field even reaches more than ten tons, which not only brings about the transportation problem of the device, but also increases the complexity and uncertainty of the installation and debugging of the system In addition, in order to ensure the installation rigidity of the detection sensor, the cross section of the measuring probe motion support device must ensure a certain cross-sectional area, which results in a large radar cross-sectional scattering value of the flatness detection device during the microwave flatness detection process, thus have a great influence on the measurement results

To sum up, there are two common problems in the current scanning devices used for microwave flatness detection, one is the problem of overweight, and the other is the problem of large radar cross-section scattering value of the measuring probe support device

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