Today, as I write this I am in Bend, Oregon. I had the privilege of traveling from East Texas to this beautiful mountain valley to demonstrate the Javad Triumph-LS to the Oregon GPS Users Group. (At the meeting they voted to change their name to Oregon GNSS Users Group).
First, I have to say this is a very fine organization. It's composed of GNSS users, mostly surveyor from what I could see, with serious participation and involvement from the Oregon Department of Transportation (ODOT) and the NGS state advisor, Mark Armstrong. ODOT provides a very well maintained GNSS network: ORGN. These individuals meet twice a year to discuss all things GPS. At this meeting, there were presentations on ITRF compared to NAD83, the ORGN and the Oregon Coordinate Reference System (which has been recently updated to include low distortion projections for the entire State of Oregon). I truly appreciate seeing geospatial professionals with a passion for learning and improving their services.
I was there to demonstrate the Triumph-LS. There was a course of 11 points that were surveyed by RTK connected to the RTN. Two points were in challenging canopy and were placed by total station from points in the open.
I created a base point using the RTN and then setup the Triumph-2 on this point so that I could demonstrate beast mode and post processing. The first point was under dense maple tree canopy. I set the LS to require 20 independent fixes with a minimum of 3 minutes observation and a consistency of 100 with validation at the end (all with a minimum of 2 engines). The first attempt at this point required 13 minutes. I was also collecting raw data with this point. The second attempt required only 3 minutes and 4 seconds. This was back to back.
I then collected a point in the open and demonstrated stake out using the white boxes (ahead/back and left/right) which relies on the internal compass and I showed them Guide which also relies on the internal compass and allows the user to navigate to a point without requiring the user to know where North is.
The first session ended for lunch and I post processed the results. DPOS nailed them and was in substantial agreement with RTK.
In the afternoon I observed the point under the maple canopy again. It required 12 minutes and 45 seconds. I then went to the second canopy point which was under some pine trees. It required 4 min 11 seconds. We then looked at stake out (I was with a different group) and showed them Guide. When the session ended, I post processed this session as well. Both points processed very well.
My results (differences are from provided coordinates):
CP6 (781seconds)
First Observation:
RTK
N -0.117'
E +0.018'
U +0.245'
PPK
N -0.047'
E +0.016'
U +0.256'
CP6 (195 seconds)
Second Observation
RTK
N -0.007'
E +0.012'
U +0.205'
PPK
N +0.012'
E +0.020'
U +0.165'
CP6
Third Observation (765 seconds)
RTK
N -0.063
E -0.00
U +0.096
PPK
N -0.06
E +0.017
U +0.252
CP7 (251 seconds)
RTK
N +0.138'
E -0.013'
U +0.022'
PPK
N +0.154'
E -0.008'
U +0.050'
CP4 (181 seconds)
RTK
N +0.066'
E +0.022'
U +0.047'
PPK
N +0.068'
E +0.012'
U +0.062'
I tagged this photo with CP7 under the pine trees with some of the good people that attended.
It was a great experience.
First, I have to say this is a very fine organization. It's composed of GNSS users, mostly surveyor from what I could see, with serious participation and involvement from the Oregon Department of Transportation (ODOT) and the NGS state advisor, Mark Armstrong. ODOT provides a very well maintained GNSS network: ORGN. These individuals meet twice a year to discuss all things GPS. At this meeting, there were presentations on ITRF compared to NAD83, the ORGN and the Oregon Coordinate Reference System (which has been recently updated to include low distortion projections for the entire State of Oregon). I truly appreciate seeing geospatial professionals with a passion for learning and improving their services.
I was there to demonstrate the Triumph-LS. There was a course of 11 points that were surveyed by RTK connected to the RTN. Two points were in challenging canopy and were placed by total station from points in the open.
I created a base point using the RTN and then setup the Triumph-2 on this point so that I could demonstrate beast mode and post processing. The first point was under dense maple tree canopy. I set the LS to require 20 independent fixes with a minimum of 3 minutes observation and a consistency of 100 with validation at the end (all with a minimum of 2 engines). The first attempt at this point required 13 minutes. I was also collecting raw data with this point. The second attempt required only 3 minutes and 4 seconds. This was back to back.
I then collected a point in the open and demonstrated stake out using the white boxes (ahead/back and left/right) which relies on the internal compass and I showed them Guide which also relies on the internal compass and allows the user to navigate to a point without requiring the user to know where North is.
The first session ended for lunch and I post processed the results. DPOS nailed them and was in substantial agreement with RTK.
In the afternoon I observed the point under the maple canopy again. It required 12 minutes and 45 seconds. I then went to the second canopy point which was under some pine trees. It required 4 min 11 seconds. We then looked at stake out (I was with a different group) and showed them Guide. When the session ended, I post processed this session as well. Both points processed very well.
My results (differences are from provided coordinates):
CP6 (781seconds)
First Observation:
RTK
N -0.117'
E +0.018'
U +0.245'
PPK
N -0.047'
E +0.016'
U +0.256'
CP6 (195 seconds)
Second Observation
RTK
N -0.007'
E +0.012'
U +0.205'
PPK
N +0.012'
E +0.020'
U +0.165'
CP6
Third Observation (765 seconds)
RTK
N -0.063
E -0.00
U +0.096
PPK
N -0.06
E +0.017
U +0.252
CP7 (251 seconds)
RTK
N +0.138'
E -0.013'
U +0.022'
PPK
N +0.154'
E -0.008'
U +0.050'
CP4 (181 seconds)
RTK
N +0.066'
E +0.022'
U +0.047'
PPK
N +0.068'
E +0.012'
U +0.062'
I tagged this photo with CP7 under the pine trees with some of the good people that attended.
It was a great experience.
