Patents by Inventor Zhenzhu ZHA

Zhenzhu ZHA 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).

  • Ground-based interferometric synthetic aperture radar-based atmospheric phase compensation method
    Patent number: 10705205
    Abstract: The present invention relates to the technical field of synthetic aperture radar, and in particular to a ground-based interference synthetic aperture radar-based atmospheric phase compensation method. The present invention first uses the inverse fast Fourier transform algorithm to rapidly and effectively realize the focusing in the range and cross-range dimension. Then a triple threshold method which combines coherence coefficient, amplitude, and amplitude dispersion index is used to select reliable PS points. Finally, under a full consideration of the spatial correlation of the atmospheric phase, the atmospheric phase is estimated by using a two-dimensional-polynomial model. The present invention can rapidly and accurately estimate and compensate the atmospheric phase, is helpful in improving the accuracy of GB-InSAR real-time measurement, and valuable and universal in practical application.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: July 7, 2020
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Qun Wan, Yue Yang, Zhenzhu Zha, Jihao Yin, Lin Zou, Jie Zhuang, Xinyu Chen
  • GROUND-BASED INTERFEROMETRIC SYNTHETIC APERTURE RADAR-BASED ATMOSPHERIC PHASE COMPENSATION METHOD
    Publication number: 20190353779
    Abstract: The present invention relates to the technical field of synthetic aperture radar, and in particular to a ground-based interference synthetic aperture radar-based atmospheric phase compensation method. The present invention first uses the inverse fast Fourier transform algorithm to rapidly and effectively realize the focusing in the range and cross-range dimension. Then a triple threshold method which combines coherence coefficient, amplitude, and amplitude dispersion index is used to select reliable PS points. Finally, under a full consideration of the spatial correlation of the atmospheric phase, the atmospheric phase is estimated by using a two-dimensional-polynomial model. The present invention can rapidly and accurately estimate and compensate the atmospheric phase, is helpful in improving the accuracy of GB-InSAR real-time measurement, and valuable and universal in practical application.
    Type: Application
    Filed: June 20, 2018
    Publication date: November 21, 2019
    Applicant: University of Electronic Science and Technology of China
    Inventors: Qun WAN, Yue YANG, Zhenzhu ZHA, Jihao YIN, Lin ZOU, Jie ZHUANG, Xinyu CHEN