What kind of distance do you need to measure? 1m or 10km?
But in my ears it sound like you need two units and use e.g mobile topographer to get the live distance. A fairly simple setup but gets the job done.
The gnss station (distance to station is too long) for this setup would not perform well enough.
The area inside which I take the measurements is never more than 100,000 square meters.
The maximum height differences will be a few hundred meters.
Considering that I am not interested in georeferencing, considering the 10 cm error, is totally impossible with just one station (even with multiple frequencies) and with the corrections of a station at 250 Km ?
You would probably struggle to get fix with baseline over 200km and if you did get fix, the error would be to much. If you have VRS service, then one reciver is enough.
And PPK is not an option as you need live readings, right?
For some services you can get almost live readings with only one RS2 and upload data to e.g NrCan for a rapid solution. But then you need cell coverage in the field too.
Its doable but it seems like the baseline length is eating up your time. A 15 min observation time should be enough for RS and even shorter for RS2.
But i think two RS units is the fastes and cheapest solution, because of the short baseline.
You just dump the base where ever you start and just use the rover like it was the only one you had, you could also select between PPK and RTK too. I also think its more robust. My 2 cents
Possible yes.
Still, you might find a RS duo combo cheap now that RS2 is on its way, people are trading in or up.
Then you dont need the antenna, battery fuzz.
For short baseline, not so much difference only faster fix and possible more reliable fix in noisy enviroment. For longer baseline with RS2 you gain more accurate fix and it handle really long baseline very well. And then there is the PPP option with RS2 that is not possible with RS.
Time to fix somewhat dependent on the situation, from few seconds to minutes
In my case the distance between base and rover will never be more than a few hundred meters. So the advantages of multiband technology would be limited. But it happens that I find myself working inside excavations with high and reflective walls (white stone) and this could cause “noise”.
Does PPP mean that you can get the solution of a single point with a single receiver ? In what time ?
With your areas of work, the M+ and the RS+ might not be right for your needs, as you will have limited skyview of lots of multipathing. Here the multifrequency RS2 will shine!
The base can always be placed in a point with the whole sky at sight (the top of the pit).
The rover, however, could find itself measuring points at the base of the pit and therefore have portions of the sky not visible and reflective walls around. Anyway I did tests and in the most disadvantaged points, at least a good dozen satellites are seen.