Please Note:

The Open Access Repository has moved to a new authentication system as of the 1st of November.

Account holders will now be able to login using their University of Tasmania credentials.
If you have trouble logging in please email us on E.Prints@utas.edu.au so we can assist you.

Public users can still access the records in this repository as normal

Open Access Repository

Experiences with a mixed-mode GPS-based volcano monitoring system at Mt. Papandayan, Indonesia

Downloads

Downloads per month over past year

Janssen, V and Roberts, C and Rizos, C and Abidin, HZ (2001) Experiences with a mixed-mode GPS-based volcano monitoring system at Mt. Papandayan, Indonesia. Geomatics Research Australasia, 74 (1). pp. 43-57. ISSN 1324-9983

[img]
Preview
PDF (Author Version)
janssen_etal_GR...pdf | Download (506kB)
Available under University of Tasmania Standard License.

| Preview

Abstract

During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The strategy is to deploy a few permanent, 'fiducial' GPS stations with dual-frequency, geodetic-grade receivers surrounding an 'inner' network of low-cost, single-frequency GPS receivers. Such a configuration offers considerable flexibility and cost savings for geodynamic applications such as volcano deformation monitoring, which require a dense spatial coverage of GPS stations, and where it is not possible, nor appropriate, to establish permanent GPS networks using dual-frequency instrumentation.
This configuration has recently been tested at the Mt. Papandayan volcano in West Java, Indonesia. The two-stage network design consists of an inner network of four single-frequency Canadian Marconi (CM) GPS receivers surrounded by three dual-frequency Leica CRS1000 GPS receivers. The inner network logged and transmitted GPS data from the 'slave' stations located on the volcano, to a base station. The combined processing of the CM and Leica receiver data was performed offline so as to investigate the performance of such a mixed-mode system. The basis of the processing methodology is to separate the dual-frequency, 'fiducial' station data processing from the baseline processing involving the single-frequency receivers on the volcano. The data processing for the former was carried out using a modified version of the Bernese software, to generate a file of 'corrections' (analogous to Wide Area DGPS correction models for the distance dependent biases -- primarily due to atmospheric refraction). These 'corrections' will then be applied to the double-differenced phase observations from the inner receivers to improve the baseline accuracies (primarily through empirical modelling of the residual atmospheric biases that otherwise would be neglected). A description of the field testing (and its challenges) during February-March 2000, together with a discussion of the results are presented.

Item Type: Article
Keywords: GPS, volcano deformation monitoring, ionosphere
Journal or Publication Title: Geomatics Research Australasia
Page Range: pp. 43-57
ISSN: 1324-9983
Date Deposited: 13 Dec 2006
Last Modified: 18 Nov 2014 03:12
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP