Effect of installing SCIGN radomes in the ISGPS network
When installing SCIGN radomes at the
ISGPS sites we have found
apparent offsets of around 20mm in the vertical component
(read about it in
a report on the first year of ISGPS.)
SCIGN maintains a nice web on the
SCIGN radome project.
The ISGPS network consists mostly of Trimble receivers and Trimble Choke Ring
antennas. The radomes we have used in the network are
termed "Short Dome" (part number 0010-2). Here
is a photo from ISGPS station SOHO showing
a typical ISGPS setup with the radome. For the installation we use
small washers to secure the radome.
This differs slightly from the recommended installation, but probably has
no major effect.
At most stations the radomes were installed at the same time as recordings
started at the staions. However, at the oldest sites, the radomes were installed
after recordings started.
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Benedikt Gunnar Ofeigsson