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Spatial camera image stabilizing method based on flutter measurement of fiber-optic gyroscope

A technology of space camera and fiber optic gyroscope, which is applied in the direction of measuring devices, photographing devices, instruments, etc.

Inactive Publication Date: 2014-09-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a space camera image based on optical fiber gyroscope chatter measurement for the limitations of current space camera chatter measurement and image compensation methods stabilization method

Method used

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  • Spatial camera image stabilizing method based on flutter measurement of fiber-optic gyroscope
  • Spatial camera image stabilizing method based on flutter measurement of fiber-optic gyroscope
  • Spatial camera image stabilizing method based on flutter measurement of fiber-optic gyroscope

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Embodiment Construction

[0018] in, is the angular velocity of the nth point;

[0019] is the angular increment from the beginning to the i-th sampling point, and the value of i is 1 to the actual number of sampling points;

[0020] is the sampling interval.

[0021] The space camera image stabilization system based on fiber optic gyroscope flutter measurement includes three parts: time scale synchronizer, flutter measurement device and image compensation system.

[0022] The time scale synchronizer is realized by dsp. At the beginning of the measurement cycle, it sends measurement instructions to the fiber optic gyroscope and sends shooting to the space camera. At the end of the measurement cycle, it sends a measurement end command to the fiber optic gyroscope to obtain the output of the fiber optic gyroscope and sends instructions to the space camera. Obtain the CCD imaging information of the space camera and reset the CCD, and send an image compensation command to the image compensator at ...

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Abstract

The invention discloses a space camera image stabilization method based on optical fiber gyroscope flutter measurement. The basic premise of the normal operation of the space camera CCD is that the transfer of photogenerated charge packets is synchronized with the movement of the image on the focal plane. Any mismatch will cause image blurring; chatter will cause the image to shift during the integral imaging process of the camera, destroying the Its synchronization with the movement of photogenerated charge packets affects the imaging quality of the camera. The present invention uses a large-bandwidth, high-precision fiber optic gyroscope to measure the flutter information of the space camera, and processes the flutter information through a data processor to obtain the corresponding image plane offset, and then obtains the image plane offset by shooting the space camera through the charge displacement compensation technology. The image is compensated to obtain a stable image, thus ensuring the high-resolution image output of the space camera.

Description

technical field [0001] The invention relates to the field of optical fiber sensing in optoelectronic technology, in particular to a space camera image stabilization method based on optical fiber gyroscope flutter measurement. Background technique [0002] For the space camera TDICCD, the basic premise of its normal work is that the transfer of photogenerated charge packets is kept in sync with the movement of the image on the focal plane, and any mismatch will cause image blur. The flutter will cause the camera to generate image shift during the integral imaging process, destroying its synchronization with the movement of the photogenerated charge packet, affecting the imaging quality of the camera, resulting in a decrease in the resolution of the space camera and a decrease in the performance of the satellite system. [0003] The high-speed and high-precision measurement of optical satellite platform and camera flutter is usually realized by the image correlation method thr...

Claims

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Application Information

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IPC IPC(8): G01C11/02G01C25/00
Inventor 缪立军胡慧珠陈骁杰徐之海刘承舒晓武
Owner ZHEJIANG UNIV
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