Could one of you Aschtech guys post the details on how I can collect a Static session with my RTK base while running RTK? I am using the Sokkia 2300 system with TDS. I have an extra FS/2 with the TDS program that I could leave hooked to the base but I could use the card in the reciever also. I have ben told that this can be done but have yet to figure out how to do it.

I would like to collect the data, since the base is already there and runnning, convert to Rinex (don't know how to do that either) and send it to NGS for conversion and comparison to the CORS sytem locally. I would then have good positiions on my "local" control that I could use in the future to rotate that control to SP.

Thanks in advance .... Ed

TDS Husky:

Main Menu, G for GPS Setup
GPS Setup Menu, A for System Setup
Down Arrow until you highlight Record Interval, then right arrow to select your favorite epoch interval for static work. Check the interval of your CORS station and choose the same, this is easiest.

The GPS Observables for static work will be stored on the PCMCIA card in the receiver, at the same time as the RTK data is processed and stored in your Husky.

Your post processing SW that came with your receivers has a Rinex converter in it.

Hope this helps, let me know if you need anything else.

Mike Margolis
Ashtech NE USA
mmargolis@magellanGPS.com

Mike:


Thanks for the quick reply. We are going to do it on every base point, if we can.

BTW - Since we only intended to use the RTK for local projects/networks when we bought it, we passed on the post processing software. Is there any other easy way to get a Rinex conversion prgram? Also, since the base is usually setting there for several hours, how to I stop the static after, say 2-3 hours?

Ed
Modified By Old Red Rider on 3/17/2001 at 1:14 PM

Thanks ever so much for the Email. I knew there was a real good reason why I like Ashtech equipment.

Ed

ED,
Since you don't have Post-Processing software, you have another alternative. You should have gotten RCS3.2 for downloading. Included with that is a RINEX converter. convert you base data to RINEX. NGS is now offering a free service called OPUS (Online Positioning User Service). If you collect a minimum of two hours of data with a Dual Freq you will upload the Rinex data and they will return a processed position in ITRF, NAD83 for that point and it is free. I have used the service and have checked into an A-Order HARN and two BMs. The results were impressive 0.007m horiz and 0.015m vertical. this was in a Good GEOID model area so be wary if in mountains.

Good Luck,
Joe Allegra