Space distributive type camera boresight included angle measurement method

A camera boresight and test method technology, applied in the field of aerospace optical remote sensors, can solve problems such as difficulty and large scale, and achieve the effects of improving test accuracy, meeting system integration requirements, and shortening the test cycle

Active Publication Date: 2015-04-29
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Application Information

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Problems solved by technology

If a set of high-precision, large-capacity four-dimensional testing equipment is developed, it will be very difficult and large-scale

Method used

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  • Space distributive type camera boresight included angle measurement method
  • Space distributive type camera boresight included angle measurement method
  • Space distributive type camera boresight included angle measurement method

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Embodiment Construction

[0022] The basic idea of ​​the present invention is: to realize the included angle test of visual axes of spatially distributed cameras by using a three-sided reflective prism and a high-precision precision goniometer. The installation location of the test equipment is as Figure 4 As shown, the specific implementation is as follows:

[0023] Step (1) determines the angle between two adjacent reflective surfaces in the three-sided reflective prism 3, so that the angle between the adjacent reflective surfaces of the three-sided reflective prism 3 is 180°-Φ; where Φ is the phase in the three-line array camera 2 to be measured The design value of the viewing axis angle of adjacent cameras;

[0024] Step (2) Use the precision goniometer 1 to test the actual values ​​of the two included angles θ and β of the adjacent reflective surfaces of the three-sided reflective prism 3, such as image 3 As shown, θ and β are the actual test values ​​of the angle between adjacent reflective s...

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Abstract

The invention discloses a space distributive type camera boresight included angle measurement method. A high-precision two-dimension rotary table, a customized three-face reflecting prism, a precise angular instrument and a high-precision locating and error compensating device are utilized to construct a measurement system. The customized three-face reflecting prism is installed at the pitching rotating shaft end of the high-precision two-dimension rotary table through a two-dimension adjustment tool, and auto-collimation is performed on the three-face reflecting prism through the precise angular instrument. The two-dimension adjustment tool is adjusted, so looks can always exist when the precise angular instrument performs auto-collimation on the three-face reflecting prism. The rotary table is rotated and the space position of a paralleled light tube is adjusted, so boresights of all cameras can be adjusted to be parallel to the optical axis of the paralleled light tube in sequence. Measurement data generated when the precise angular instrument performs auto-collimation on the three-face reflecting prism are stored, and then the included angle of the cameras to be measured can be obtained through computation. The technology is suitable for being used in space distributive type camera boresight included angle measurement, and the measurement accuracy can be superior to 3''. The method can be applied to three-line array camera integrated measurement and passes on-orbit detection.

Description

technical field [0001] The invention belongs to the technical field of aerospace optical remote sensors, and is suitable for precise testing of the included angle of sight axes of spatially distributed cameras such as stereo surveying and mapping cameras. Background technique [0002] The transmission-type large-scale stereoscopic mapping camera is usually in the form of a two-line array or a three-line array, consisting of two or three mapping cameras, and the two or three cameras are distributed in a spatial angle. This type of camera configuration requires that the intersection angle between two or three cameras must be accurately calibrated during camera development, and the accuracy requirements are very high, and the calibration accuracy is often required to be within 5″. [0003] Take the three-line array camera composed of three cameras as an example. The three cameras are not in the same plane and form a spatial relationship. The configuration diagram of the three-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B43/00
Inventor 李重阳马丽娜张继友岳丽清王东杰王聪
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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