BarnacleBill
New member
GPS experience of users of the detector are going to range all over the place from someone who has never used one to people who use them in their work for surveying etc.
Without getting too long winded a GPS handheld receives a signal from satellites orbiting the earth. The satellite data stream from each satellite identifies itself and then in essence(not exactly but for ease of understanding), emits a pulse which is timed for arrival at the handheld. The handheld listens for as many satellites as it can hear and times the arrival of the pulses. By having the satellites say where each is above the earth and timing how long it takes a pulse to arrive, the method of triangulation can be used to determine where you are on the face of the planet.
Except there is a little problem, the pulses travel down through the atmosphere which has what you could think of as waves on a lake or pond. These waves distort the pulse time of arrival and they vary from moment to moment. Therefore to get the most accurate positioning you want to set the GPS down and let it average the signals for a while to counteract the atmospheric distortion.
So if it were me arriving at a site with the CTX and I was going to be returning to the same area again, here's what I would do. Park your vehicle, find a nice clear open spot of the sky as you can near a landmark, rock, tree, fence post etc. Turn the CTX + GPS on, let it set there and average while you go get other gear ready. And every time you return to the same area follow the same routine.
This will help assure that your waypoints etc are the most accurate.
HH
BB
Without getting too long winded a GPS handheld receives a signal from satellites orbiting the earth. The satellite data stream from each satellite identifies itself and then in essence(not exactly but for ease of understanding), emits a pulse which is timed for arrival at the handheld. The handheld listens for as many satellites as it can hear and times the arrival of the pulses. By having the satellites say where each is above the earth and timing how long it takes a pulse to arrive, the method of triangulation can be used to determine where you are on the face of the planet.
Except there is a little problem, the pulses travel down through the atmosphere which has what you could think of as waves on a lake or pond. These waves distort the pulse time of arrival and they vary from moment to moment. Therefore to get the most accurate positioning you want to set the GPS down and let it average the signals for a while to counteract the atmospheric distortion.
So if it were me arriving at a site with the CTX and I was going to be returning to the same area again, here's what I would do. Park your vehicle, find a nice clear open spot of the sky as you can near a landmark, rock, tree, fence post etc. Turn the CTX + GPS on, let it set there and average while you go get other gear ready. And every time you return to the same area follow the same routine.
This will help assure that your waypoints etc are the most accurate.
HH
BB
