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The detection method of the first principal point of the telescope

A detection method and telescope technology, applied in the optical field, can solve problems such as errors, and achieve the effect of improving angle measurement accuracy and strong operability

Inactive Publication Date: 2019-11-26
UNIT 63680 OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the target distance is relatively short, simply using this method for correction will bring a certain error

Method used

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  • The detection method of the first principal point of the telescope
  • The detection method of the first principal point of the telescope
  • The detection method of the first principal point of the telescope

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Experimental program
Comparison scheme
Effect test

Embodiment

[0040] 1. Assembly of the telescope under test

[0041] The telescope to be tested is assembled on one side of the main mirror of a certain type of theodolite, the focal length is 1.017m, the pixel size of the detector is 6.5μm, and the number of pixels is 2048×2048. The coordinates of the geometric center of the detector in the main mirror coordinate system of the theodolite are (-0.322 , -0.257, 0.616); Level the theodolite azimuth disk through the leveling mechanism.

[0042] 2. Cooperation cursor installation

[0043] The cooperative cursor uses LED lights with a diameter of 0.5mm. The angle between the LED lights and the three-axis center line of the theodolite and the geographic horizontal plane is 1.9132°, and the coordinates in the coordinate system of the theodolite host are (166.6451, 426.8678, 15.3160). The relationship between the theodolite host, the telescope to be measured and the cooperation cursor is as follows: figure 1 As shown in the figure, O is the thre...

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Abstract

The invention relates to detection and calculation of an imaging incidence first main point of an optical theodolite, and belongs to the optical field. The method comprises the following steps: firstly, constructing detection environments, such as mounting of a to-be-detected telescope, cursor erection and the like; secondly, rotating the direction and pitching of the theodolite, and recording original angle measuring data; and thirdly, calculating the position of the first main point by using a triangle line and angle relationship. The obtained detection results can be directly applied to angle correction when the telescope is used for observing a near-range target, and thus the angle measuring accuracy of the system is improved.

Description

technical field [0001] The invention relates to the detection calculation of the first principal point of the incident imaging of the optical telescope. It belongs to the field of optical technology. Background technique [0002] When the telescope assembled by the theodolite system observes the target, the form of shaft angle measurement + miss correction is generally used to determine the spatial position and direction of the target relative to the theodolite. This method is mainly suitable for long-distance targets. When the target distance is relatively short, if this method is simply used for correction, it will bring certain errors. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a detection method for the first principal point of the telescope in view of the above-mentioned prior art, and the obtained detection result can be directly applied to the angle correction when the telescope observes a short-dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G01C1/02
CPCG01C1/02G01C25/00
Inventor 王前学赵李健刘新明周海渊徐如祥冯小勇杨恒黄晓娟桑海峰
Owner UNIT 63680 OF PLA