Absolute calibration device and method for radio telescope antenna surface type

A technology for radio telescopes and antenna surfaces, applied to measuring devices, optical devices, instruments, etc., can solve problems such as being easily affected by ambient background light, poor anti-interference ability, high cost, etc., to ensure performance and reduce labor intensity , Easy assembly and debugging
CN104048620AInactive Publication Date: 2014-09-17NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
Publication Date
2014-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an absolute calibration device and method for a radio telescope antenna surface type. The absolute calibration device for the radio telescope antenna surface type is composed of a PSD position sensor array, a supporting shaft, annular laser devices and a control circuit. The PSD position sensor array is composed of multiple coaxial PSD position sensor coils, each PSD position sensor coil is composed of multiple PSD position sensor units with multiple position points on a central axis as circle centers, and the photosensitive surfaces are dead against the central axis and are in parallel with the central axis. The supporting shaft is arranged on the central axis and provided with the annular laser devices, and the emitting surfaces of the annular laser devices are perpendicular to the central axis. The device is simple in structure, low in cost and easy to manufacture and assemble. The active reflecting surfaces of the radio telescope are convenient to upgrade, performance of the radio telescope is guaranteed in real time, and the implementation technology is simple.
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Description

Technical field

[0001] The invention relates to a radio telescope antenna face shape absolute calibration device and method based on a ring laser and a PSD array, which is very suitable for the absolute splicing calibration detection and correction of the radio panel of the radio telescope. Background technique

[0002] Radio telescopes usually have a large aperture, and their antennas (main panels) are usually made up of large quantities of small panels. For example, a 65-meter-aperture radio telescope antenna is composed of thousands of panels on the order of one meter. The radio telescope is installed and In the process of putting it into official operation, under the influence of external loads such as gravity and wind, it is necessary to ensure that the overall shape of the paraboloid is within the allowable range. In addition to considering the support and shape-preserving design of the antenna back frame, the large-scale panel splicing inspection is also a key part of the ...

Claims

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