キネマティックGPSソフトウエアKINGSの開発と伊豆諸島地域の地殻変動観測への適用
1997 年 43 巻 2 号 p. 91-105
詳細
1997 年 43 巻 2 号 p. 91-105
A Kinematic GPS Software program (KINGS) has been developed at National Aerospace Laboratory (NAL), and its feasibility evaluated by flight experiments. Analysis of static data of the Izu-Islands area by KINGS shows that the positioning accuracy is around 1.5 cm horizontally, and 3 cm vertically. Data taken from the area on 6 th Oct. 1995 were also analyzed when an earthquake of M5.6 occurred near Kozujima Island. As a result, the movement of Kozujima Island eastward by a few centimeters was ob served. This suggests the possibility of the real time monitoring of crustal movement by kinematic GPS. In this paper, the on-the-fly ambiguity resolution algorithm which is requisite to the real time processing is described first, and the positioning accuracy of kinematic GPS is evaluated next. Finally, we demonstrate the movement of Kozujima Island before and afte the earthquake.
