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Title: 高速サンプリングGPS観測のノイズ評価
Other Titles: Noise Evaluation of High-speed Sampling GPS Observation
Authors: 金曽, 貴之1 Browse this author
小山, 順二2 Browse this author →KAKEN DB
森谷, 武男3 Browse this author →KAKEN DB
高橋, 浩晃4 Browse this author →KAKEN DB
Authors(alt): KANESO, Takayuki1
KOYAMA, Junji2
MORIYA, Takeo3
Keywords: GPS measurement
GPS noise level
Noise reduction
Issue Date: 25-Mar-2001
Publisher: 日本地震学会
Journal Title: 地震. 2輯
Volume: 53
Issue: 3
Start Page: 221
End Page: 229
Publisher DOI: 10.4294/zisin1948.53.3_221
Abstract: 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.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高橋 浩晃

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