We made our initial GPR test runs in early June. We wanted to get an idea of how accurately the GPR would work as it was towed behind our boat in an inflatable raft. Our first time out was the most difficult because we had to set everything up for the first time and it was all new to everyone except Professor Jol. After a short while we were able to tie the GPR and its fiber optic cables to a tow rope and successfully navigate the lake.
The first run we had the GPS in the raft with the GPR. We were not sure how much noise it would create, but we needed the GPS with the GPR so we could accurately calculate the distance of each GPR line. Unfortunately the GPS greatly affected the GPR data on our first run. The line below (coming soon) is one of our first runs and shows how much interference we were really getting.
Eventually we learned that the GPS in back by the GPR was negatively affecting out data collection. Currently we are working on a plan to fix this problem. With the GPS out of the way of the GPR we will be able to gather more accurate data. Here are a few sample lines without the GPS back by the GPR.
Lines Coming Soon
Preparing the rafts for the 50MHz antennae
Tying things together for a test run.
Neil taking the GPR for a test run.
Out on the Lake with the 50MHZ antennae
Craig (on bow of boat), Harry, and Neil (driving) on the lake.
Neil and Harry taking the 100MHz antennae out for the first test run.
ALL PHOTOGRAPHS TAKEN BY:
PROFESSOR DOUG FAULKNER