Patents by Inventor Dejun ZHAN

Dejun ZHAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9316716
    Abstract: The disclosure discloses a dynamic attitude measurement method of a star sensor based on gyro's precise angular correlation. On the basis that a dynamic compensation is performed on each of the measurement exposure frames of the star sensor and a fixed star matching vector matrix having dynamic error and noise influence is obtained in a prior art, a transform matrix between every two adjacent measurement frames of the star sensor is precisely measured by a unit including three gyros fixedly coupled with the star sensor. The transform matrix correlates the matched vector matrixes of the adjacent measurement frames of the star sensor. Finally, a correlated measurement equation is established with a series of correlated measurement frames, which is corresponding to processing a series of measurement frames as a single measurement frame.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 19, 2016
    Assignee: National University of Defense Technology
    Inventors: Shiqiao Qin, Dejun Zhan, Jiaxing Zheng, Wei Wu, Hui Jia, Sihua Fu, Liheng Ma
  • Publication number: 20150185009
    Abstract: The disclosure discloses a dynamic attitude measurement method of a star sensor based on gyro's precise angular correlation. On the basis that a dynamic compensation is performed on each of the measurement exposure frames of the star sensor and a fixed star matching vector matrix having dynamic error and noise influence is obtained in a prior art, a transform matrix between every two adjacent measurement frames of the star sensor is precisely measured by a unit including three gyros fixedly coupled with the star sensor. The transform matrix correlates the matched vector matrixes of the adjacent measurement frames of the star sensor. Finally, a correlated measurement equation is established with a series of correlated measurement frames, which is corresponding to processing a series of measurement frames as a single measurement frame.
    Type: Application
    Filed: December 12, 2014
    Publication date: July 2, 2015
    Applicant: NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
    Inventors: Shiqiao QIN, Dejun ZHAN, Jiaxing ZHENG, Wei WU, Hui JIA, Sihua FU, Liheng MA