OPUS/DPOS for Panama?


I'm down in the Republic of Panama.
I can use OPUS but the CORS that are used are 1100 km from here. Not sure what the accuracy is but based on a Google Earth check of the point it is in the ballpark anyway.
Haven't tried DPOS yet. Does DPOS only work via Android or iPhone phones? Can I connect to DPOS directly via my computer?
Does anyone know how to do the equivalent of OPUS here in Panama?

Kelly Bellis

ME PLS 2099
DPOS can be accessed via the Internet.
From this page: http://www.javad.com/jgnss/javad/news/pr20140819.html, read more
How to DPOS it with Android
How to DPOS it with iOS

DPOS has also been recently deployed using your Triumph-LS. See this thread for more:
Latest update of JField

DPOS is also deployed using your browser... and I think that this portal is out of beta, but can't promise you'll be granted access if it's not: http://geo.javad.com/dpos

Note that in all cases, the user is submitting only .jps files. IGS data availability comes into play; my advice would be to do some tests to see what delay is required before making submissions to DPOS.

Lastly, you may also want to explore independent solutions using something like the Canadian Spatial Reference System (CSRS) Precise Point Positioning (PPP) tool that allows the computation of higher accuracy positions of raw Global Navigation Satellite System (GNSS) data without specific CORS and their associated availability, procimity, baselines, etc. at: http://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php?locale=en

Shawn Billings

Shawn Billings
Great information, Kelly. Your post reminded me that AUSPOS is also a very good online processor. http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/auspos

One thing I am not sure of, Scott, is the Horizontal Datum for Panama. In the US, the Datum is NAD83, which has been adjusted several times in the past three decades. CSRS PPP and AUSPOS both provide ITRF2008/IGS08 (CSRS PPP also provides NAD83). When processing data through DPOS using the LS, once results return to the LS, J-Field will use the transformation from ITRF>(your datum) as configured when your Coordinate System was created to convert the DPOS ITRF2008 coordinate to your coordinate system datum coordinate. Provided that the transformation is configured properly, it should make life easy, but you'll likely want to check on some officially recognized monuments.

Kelly Bellis

ME PLS 2099
Actually Shawn, I looked longer and harder for the article I recalled reading a few years back... and I'm not sure, but somehow believe that it was authored by Dave Doyle before he retired despite the author's name not appearing in print. I may have blended memories and perhaps it wasn't in Professional Surveyor Magazine. Regardless, the article featured the recent (within the last 10 years) surveying being done along the Panama Canal. The whole point of this post and fruitless search was surely there must be some awesome control, perhaps even close to Scott's project that was used for this classic engineering project.