Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A radio telescope antenna surface absolute calibration device and method

A technology for radio telescopes and antenna surfaces, applied to measuring devices, optical devices, instruments, etc., can solve the problems of 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

Inactive Publication Date: 2017-03-15
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages of low precision, poor anti-interference ability, or high cost, not real-time and heavy, and easily affected by ambient background light in the prior art methods for detecting and adjusting the reflecting surface of the above-mentioned antenna, the present invention aims at the main antenna of the radio telescope through a simple Easy process design, real-time splicing absolute calibration detection and adjustment of its batch panels at a relatively low cost, the invention provides a radio telescope antenna surface absolute calibration device based on ring lasers and PSD arrays and based on the device Calibration method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A radio telescope antenna surface absolute calibration device and method
  • A radio telescope antenna surface absolute calibration device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, a radio telescope antenna surface shape absolute calibration device is composed of a PSD position sensor array 20, a linear guide rail 3, a ring laser 4 and a control circuit (not shown in the figure), and the PSD position sensor array 20 consists of several coaxial Composed of PSD position sensor rings 21, the linear guide rail 3 is located at the central axis 6 of the main reflection surface, and each PSD position sensor ring 21 is composed of several PSD position sensor units 211 with the linear guide rail 3 as the center of the circle and the photosensitive surface parallel to the central axis 6 The linear guide rail 3 is provided with a ring laser 4, and the emission direction of the ring laser 4 is perpendicular to the central axis 6; the control circuit is used to control the PSD position sensor 211 and the ring laser 4 to collect and process the signal.

[0033] On the main reflective surface 1 formed by a large number of panel splicing, ...

Embodiment 2

[0042] like figure 2 As shown, the difference between this embodiment and the previous example is that a support shaft 5 is provided at the central axis 6, and six ring lasers 4 are provided along the height direction on the support shaft 5, and each ring laser 4 corresponds to a PSD position sensor circle 21 .

[0043] On the main reflective surface 1 formed by splicing a large number of panels 11, place a PSD position sensor unit 211 on the contour circles along the direction of the central axis 6 at the position to be measured, and place the PSD position sensor unit 211. The PSD position sensor unit 211 includes PSD, The support mechanism and packaging have highly consistent structural dimensions and installation positioning interfaces, and the zero-crossing point is uniformly calibrated in the laboratory, and on the fixed support shaft 5 at a fixed position parallel to the central axis of the main reflection surface, how accurate is the installation? A fixable ring laser...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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.

Description

technical field [0001] The invention relates to a radio telescope antenna surface absolute calibration device and method based on a ring laser and a PSD array, which is very suitable for the absolute stitching calibration detection and correction of the radio panel of the radio telescope. Background technique [0002] A radio telescope usually has a large aperture, and its antenna (main panel) is usually spliced ​​by a large number of small panels. For example, a 65-meter-caliber radio telescope antenna is composed of thousands of one-meter panels. During the formal operation, under the influence of external loads such as gravity and wind, it is necessary to ensure that the overall surface shape of the paraboloid is within the allowable range. In addition to considering the support shape-keeping design of the antenna back frame, mass panel splicing detection is also a key part of the design and operation of radio telescopes, especially the absolute calibration detection meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/245
Inventor 张勇李烨平
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com