Well, Jim, this is coming from a different point of view. GPS was largely intended to guide missiles. It had algorithms for moving objects. It actually tracks better, when in motion. I have proven this to myself. So....
From the wide open, and passing through a “bad spot”, it can sometimes track all the way through. Because, it is simultaneously looking at the velocity, that is speed, direction, and rates of change in direction and or speed. So, some of this ability is left in most GPS receivers. I’m sure somebody else could give you a much better description of this, than I did. This is from memory, either from an old article, or lecture. So, believe this at your own risk. But, experience of my own seems to back this up. With my old Topcon legacy E’s, it would register FIX, While driving my atv at 20 mph, through places gps don’t go. It seems that there are more “interrupts” built into the Javad. But, it seems that the affect is still there. So, by driving down a road, and passing from “wide open” to under a big tree, or a series of trees, it carries the lock to some extent. When going through a bad spot, and it looses lock, I usually drive slow to the next semi-open spot, stop and wait. After regaining FIX I continue on.
ive played with it, on roads, that I had previously surveyed with fully verified shots. It’s amazing how well a moving gps works. I believe it works BETTER when in motion. This is the effect we are looking for.
ymmv. Thank you
Nate