Humminbird Side Imaging Forums
General => General Discussion => Topic started by: newkid4si on March 31, 2017, 11:02:11 PM
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One of the blocks of information in the "GPS Diagnostic View" is Altitude. Any thoughts on its accuracy for monitoring water level fluctuations when recording on a reservoir at different times throughout the year? Water level is not monitored and several launches are used.
Mike
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Interesting Mike ... I've never even thought about it ...
I will make a note to check it with my lake's water level ...
Rickie.
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Of the three axis altitude has the highest degree of error. General consumer gps is not really accurate enough to account for water level changes, you'd need to step up to a survey type grade gps with rtk.
With a standard consumer gps your altitude error is in the range of plus minus 10-50 ft. Good for an idea but not really for water level corrections.
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Thank you for taking the time to post this. I was afraid that was to good to be true. Now I have to go around the lake and mark seven different launches.
Mike