Saying that we have a project in front of it is to do so, it is surprising that there are wood
To 3D GPS it is not easy to find the map
It is really unexpected, basically not, the accuracy is not enough!
Hello friends, so, do 1:2000 topographic mapping with a handheld GPS is obviously not reality, after all, the handheld GPS precision is, however, now we are in the handheld equipment is no GPS, in fact, in the absence of the base station is a handheld GPS, receiving SBAS difference can reach sub meter level, but if a base station or receive CROS network differential signal will be RTK mobile station,
