Patents by Inventor Ryuichiro Iwasaki

Ryuichiro Iwasaki 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).

  • Satellite based augmentation system and satellite based augmentation method
    Patent number: 9322919
    Abstract: Provided is a satellite based augmentation system comprising: a threshold value calculation unit which calculates a monitoring threshold value for determining whether or not a value of carrier to noise power density ratio (C/No) at a time when a pseudorange is measured on the basis of a signal from a GPS satellite is proper; and a pseudorange determination unit which determines whether or not the pseudorange has proper accuracy by comparing the C/No value and the monitoring threshold value.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 26, 2016
    Assignee: NEC CORPORATION
    Inventors: Ryuichiro Iwasaki, Yutaka Nozaki
  • SATELLITE BASED AUGMENTATION SYSTEM AND SATELLITE BASED AUGMENTATION METHOD
    Publication number: 20130127661
    Abstract: Provided is a satellite based augmentation system comprising: a threshold value calculation unit which calculates a monitoring threshold value for determining whether or not a value of carrier to noise power density ratio (C/No) at a time when a pseudorange is measured on the basis of a signal from a GPS satellite is proper; and a pseudorange determination unit which determines whether or not the pseudorange has proper accuracy by comparing the C/No value and the monitoring threshold value.
    Type: Application
    Filed: August 26, 2011
    Publication date: May 23, 2013
    Applicant: NEC CORPORATION
    Inventors: Ryuichiro Iwasaki, Yutaka Nozaki