Carlson SurvNET GPS Adjustment
We recently did a survey through a Base/Rover procedure using a localization on two state place coordinates. Then went through the adjustment process in SurvNET through Carlson Survey and adjusted the closure. After realizing we had left out some road shots, we went back and shot in the road using the State Plane Mifi system without the Base set up. When I dropped in the coordinates in Carlson there is an offset jag where the two road shots should meet, about 6 foot. Is this because we used the Base on one set up and the Mifi on another? Shouldn't it all be tied into the State Place coordinates anyways, or was there an error in our process? Any one have any experience with this?
Two state plane coordinates? From where did you obtain them?
Did you press "here" for your Base position on the first survey?
I guess I posted on the wrong duplicate thread.
Did you use a Combined Scale Factor to scale your total station distance measurements to state plane? Failing to do that will give serious residuals in most areas.
You are being asked about the source of your base position because 6 feet is a typical distance between an autonomous position and a corrected one. And even if your base position is correct, rover positions that are not "fixed", and are therefore autonomous, may be recorded. Another possible source of error is a mixup with international foot / US Survey Foot settings.