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Look at some of the new features available in TerraSync
Professional 3.20. Here's what you can do:
- Set
the data capture position maximum for a point feature and an averaged vertex
and the unit will STOP collecting data!
- Set
the “in field” or “post processed” accuracy. If set to “in field,” then the number displayed in
the upper right margin (above the double-arrow icon), is showing real time
accuracy. If you choose “post processing,” then that number is
showing post processed accuracy. This is a good change, because in
previous versions, it would only show PPA (post processed accuracy) when
using H-Star logging (GeoXH or ProXH).
- By
tapping the double-arrow in the status bar, a dialog appears that tells what
both the real time and post processed accuracy is. It displays post
processed accuracy only if a data file is open and logging is taking place
(when choosing to display real time accuracy). Very nice!
- You
can now specify what vertical accuracy you want.
- I’m
not sure how you would know your post processed baseline distance, although
if you worked in the same place all the time, I guess you would. TS
Pro is clearly using this specification to help determine what the predicted
accuracy is in post processed accuracy estimates.
- You
can now use “accuracy-based logging.” I presume this to mean that
you can now ONLY collect the positions (or carrier data) that meets the
specifications you’ve selected in this dialog. That is very nice.
This means that you can only collect data that will meet your specification.
This would also have to be tested to see if it’s accurate.
- You
can apply that accuracy-based logging to all features, or just certain
feature types.
- You
can also specify required accuracy for all features. This is something
that GPS Analyst does when validating features, but only AFTER post
processing. This is a great feature.
- Trimble
has replaced the “H-Star Logging” feature with “Log Carrier Data;
Auto, Yes, No.” This is pretty nice because it accurately describes
what H-Star data really is, and allows the user to “force” it to log
only carrier data by using “Yes,” or select “Auto” and collect it if
you can, and code data when you can’t or set it to No.
- When
you specify the type of real time corrections, you can also see, or in some
cases CHOOSE, the datum that system is using. This will force users to
confront the datum issues so they actually will have to choose what that
system is using. It also reminds users that WAAS is using WGS-84.
This list is partial and was composed after reviewing
the new software as used in a 2005 Series Trimble GeoXH. I will do
field testing of these new features on a control point and see if the estimated
accuracy values, both real time and post processed turn out to be valid.
In my personal experience, "accuracy estimates" are just that;
estimates. But, I believe they are actually revealing precisions.
Jim Lahm
3-25-2008
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