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Title
  • ja 高速サンプリングGPS観測のノイズ評価
  • en Noise Evaluation of High-speed Sampling GPS Observation
Creator
    • ja 金曽, 貴之 en KANESO, Takayuki
Accessrights open access
Subject
  • Other en GPS measurement
  • Other en GPS noise level
  • Other en Noise reduction
  • NDC 450
Description
  • Abstract en We seek the way of high-speed sampling GPS observation as a broad-band displacementseismomete. For this purpose it is necessary to evaluate the noise level inherent to the GPS observation due to ionospheric and tropospheric effects, multi-path and satellite configuration. In this study, we develop a stand-alone data acquisition system for the continuous high-speed sampling GPS observation after overcoming the troubles in automatic handling the large volume of GPS data. Four GPS stations are establised in Hokkaido area and the period of each observation is half year to year and half. Telemetry of the GPS data using the public telephone line is tested and completed. GPS station coordinates are calculated every second by the GPS kinematic method. Noise reduction for each noise source has been made, and noise levels of horizontal and vertical components after the reduction are about ±4mm, ±7mm, respectively in the case of 150km baseline length. Noise levels of various baseline lengths are also evaluated in different period ranges. These estimates of noises prove that the earthquake larger than JMA magnitude 5.9 can be detected at a GPS station 60km away from the epicenter.
Publisher ja 日本地震学会
Date
    Issued2001-03-25
Language
  • jpn
Resource Type journal article
Version Type VoR
Identifier HDL http://hdl.handle.net/2115/57965
Relation
  • isIdenticalTo DOI https://doi.org/10.4294/zisin1948.53.3_221
Journal
    • PISSN 0037-1114
    • EISSN 1883-9029
      • ja 地震. 2輯
      • Volume Number53 Issue Number3 Page Start221 Page End229
File
Oaidate 2023-07-26