Hello All,
To stem the flood of calls, I want to warn everyone that the NGS OPUS system is unavailable (you know why.)
It is not clear if observation data is being accumulated during the shutdown; nor is it given that it can be 'filled in' when the NGS comes back online.
This means that all data that you collect during the Federal shutdown may not be processable in OPUS, even after the shutdown concludes.
Don't despair, there are a number of similar online processing tools available. I have written a very detailed comparison of these tools, which was published in 'GPS World' online today:
Even without the current crisis, it is worth a read.
Please be aware that most of the alternative services will not do well with 15-minute observation files. I STRONGLY encourage you to collect at least 1-hour of observation data during the government shutdown in case OPUS-RS can't fill in the gaps when NGS OPUS is reactivated!
The latest X90 Download tool already supports direct submittal to RTX and AusPOS; two of the alternative services.
If you are using the X90-OPUS receiver and find that you want to use the excellent GAPS service (from the University of New Brunswick); you will need RINEX files with standard 8.3 filenames. The current Beta X90 Download tool has a checkbox to force 8.3 filenames on export. If you want to use GAPS, drop me a note and I will get you a copy of this beta tool, it will save you the hassle of manually renaming the files.
Good surveying to you!
Mark Silver
ms@igage.com
iGage Mapping Corporation
1545 South 1100 East STE 1
Salt Lake City UT 84105
+1-801-412-0011 x16
