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ABNORMALITY DETECTING DEVICE, COMMUNICATION DEVICE, ABNORMALITY DETECTING METHOD, PROGRAM, AND RECORDING MEDIUM NEW

外国特許コード F180009606
整理番号 5607
掲載日 2018年11月16日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP042333
国際公開番号 WO2018097272
国際出願日 平成29年11月27日(2017.11.27)
国際公開日 平成30年5月31日(2018.5.31)
優先権データ
  • 特願2016-230526 (2016.11.28) JP
発明の名称 (英語) ABNORMALITY DETECTING DEVICE, COMMUNICATION DEVICE, ABNORMALITY DETECTING METHOD, PROGRAM, AND RECORDING MEDIUM NEW
発明の概要(英語) A computer calculates an amount of change from an observation start time in a total number of electrons in the ionosphere between an observation station on the ground and a satellite, on the basis of observed data of a signal received from the satellite by the observation station. The computer estimates the next calculated amount of change in the total number of electrons on the basis of a change over time in the amount of change in the total number of electrons in the ionosphere from the observation start time, and calculates a difference (estimation error) between the estimated amount of change in the total number of electrons and the actual calculated amount of change in the total number of electrons. The computer calculates a correlation value between the estimation error calculated for each observation station and the estimation error calculated for a certain number of observation stations in the vicinity of each observation station. If the correlation value calculated for each observation station is equal to or greater than a certain threshold, the computer determines that an abnormality has occurred in the ionosphere between the observation station and the satellite if the correlation value for the certain number of observation stations in the vicinity of said observation station is also equal to or greater than the certain threshold.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • KYOTO UNIVERSITY
  • 発明者(英語)
  • UMENO, Ken
  • IWATA, Takuya
国際特許分類(IPC)
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