SeismoGeodetic System

Posted on December 5th, 2016 by vapro

Features

  • Combines seismic recording with GNSS Geodetic Measurements
  • 220 Channel GNSS Receiver
  • GNSS Precise Point Positioning (PPP) Correction
  • Advanced National Seismic System (ANSS) Class A Triaxial Accelerometer

Overview

The Trimble Kestrel System provides the user with high rate GNSS and accelerometer data, full epoch-to-epoch measurement integrity and, using the Trimble SeismoGeodetic App, the ability to create a combined GNSS and accelerometer stream (200 sps high resolution displacement time series) in real-time.

The system has been designed and built using the latest technology and includes the following advanced features:

  • Combined true acceleration (200 sps) and displacement (10 sps) observations: GNSS displacement processing from on board receiver (Trimble® CenterPoint™ RTX™ technology)
  • Instantaneous processed displacements recorded and transmitted from the receiver
  • ANSS Class A: Force-Balance Accelerometer, triaxial (internal)
  • GNSS receiver with the latest Trimble-precise Maxwell™6 processor supporting tracking GPS, GLONASS, and Galileo frequencies
  • Unified recording format of both seismic and geodetic data
  • Low power
  • Rapid data transmission algorithm
  • Error-correction protocol with backfill algorithm for data integrity
  • τc and Pd calculation in real-time for EEW
  • Raw data post processing using:
  • Forward Kalman filter
  • Backward Kalman filter
  • Smoothing with forward-backward filter
  • User defined filter parameters
  • Different geodetic antenna options
  • Low maintenance
  • Data modules for high resolution acceleration and displacement data (200 and 10 sps) to real-time processing software: Earthworm and SeisComp3

Applications

  • Real-time earthquake characterization
  • Earthquake Early Warning
  • Volcano monitoring

Partnership with the University of Naples RISSC-Lab

University of Naples RISSC-Lab

Trimble has partnered with the Unit of Experimental and Computational Seismology, Physics Department at the University of Naples Federico II (RISSC) to evaluate the Trimble Kestrel SeismoGeodetic System, model 160-09, for Earthquake Early Warning application.

RISSC-Lab is a renowned laboratory made up of researchers of the Physics Department, headed by Professor of Seismology, Aldo Zollo.

The Trimble Kestrel Seismogeodetic System, Model 160-09 has been installed at one of the Irpinia Seismic Network (ISNet) operated by RISSC-Lab under the test site evaluation and partnership agreement.

The field site installation of the Kestrel SeismoGeodetic System is intended to analyze the following:

  • Evaluation of the RTX correction accuracy and performance over different types of communication media
  • Determination of the earthquake magnitude threshold and distance when the Kestrel produces the displacement data above the background noise
  • Evaluate the Kestrel performance for main application(s) conducted by the RISSC-Lab
  • Develop (if applicable) the detection algorithm for the Earthquake Early Warning system based on the true displacement data recorded by the Kestrel
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