Who has experience with tds survey pro max using the auto collect with RTK? What speeds have you used and did you do anything to check for latency in the measurements? Does it even play a role? Trying to think thru this.:-|
I have used it to take a shot every 50 feet going anywhere from 10 to 25 mph. The last time I used this method was a couple of years ago. I was using an older version of Survey Pro, I think 4.something. I was using trimble 4800's and it worked quite well for what I was doing. I was driving down a dirt road with the receiver mounted to the side of the truck. I drove the length of the 3+ mile rd. in both directions to establish a centerline.
As far as "shot latency"; dunno. I was able to calc a centerline from the shots I took and it was in harmony with the described centerline in the deed. I would think that the faster the update rate of the receiver the better, to a point.
I also tried this out on a road by my house as a test to see how far my base radio would go. I collected at 100 ft. intervals and drove it at 45-55 mph. I brought all of the points into Google Earth and the shots looked good. They were all on the right side of the traveled way right where the receiver was mounted on the truck. Long tangents and few sharp curves. I did not concern myself with vertical. I would think that the only way to check the latency would be to do this on a steep road with an accurate HT and spot check some shots to see how they compared vertically.
edit: The shots in both instances were +/- a foot or so from being exactly 50 or 100 feet apart.
I've used it several times, although I tend to drive slower, maybe 5 to 10 mph. I understand what your concerns are. How does the GPS "keep up". I don't know how it works, but it seems to. I've used it both with original Topcon Hipers, and Hiper II's.
I am using Survey Pro 4.6 with one of my setups. I used a Sokkia GSR 2600 with a Sokkia (Ashtech)SK-702 antenna as a rover, day before yesterday (Monday) to map 3 dirt paths across a 20 acre parcel. I mount the antenna on a mag mount in the center of the vehicle with a 6.3' "rod height" and run my survey chariot just above idle to log shots @ 25' intervals. I run in NAD_83, SPC(s), so when plotted over a GIS image it is spot on. I only use it for plotting dirt paths/roads @ 25' intervals to create polylines and fit them to the shots. I tried with 50-footers and it didn't seem smooth enough. I have used this application with a Topcon/Javad reciever w/ a Topcon Legant antenna with the same results. I operate in the hill country of central Texas, under light Live Oak tree canopy. I travel slowly to keep my eye on the HRMS values. Sometimes I lose lock, so I stop, sit and wait, and continue after I pick up lock again. This particular 20 acre parcel will require an easement description to be retained by the grantor. I have generated preliminary linework off of "best fit" line geometry. I will stake the geometry on the ground to verify its location before generating a description. This will enable me to tweak it if I have to.
I understand this reply does not answer your question based upon your specific software. You also did not state what your specific task was.
