EARTHQUAKE MEASUREMENT SYSTEM INCLUDING GPS RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide a system for analyzing to collect three-dimensional earthquake data in particular, relating to an earthquake data collection system.;SOLUTION: The system for analyzing the three-dimensional earthquake data includes a plurality of digitizer devices (7) (each includes a set of geophones (8)); a data recording and control center (12), and a base GPS receiver having related antennas (5); and low power slave GPS receivers (6), provided on respective digitizer devices (7) by using a tracking support system provided by the base GPS receiver to track to obtain GPS satellite (9) signals. The slave GPS receiver (6) tracks to obtain the GPS satellite signals, when they are weaker above the receivers for the condition in a site of the existence, or the like, of a canopy-like cover due to trees and leaves (11), by using the tracking support system. The system processes distance information provided by the slave GPS receiver (6) over a long time.;COPYRIGHT: (C)2010,JPO&INPIT