We are supporting a firm that is doing a "hi-rail" video Survey of 200 miles of rail line for a "study"
They are not looking for Survey grade info, just an alignment of the route. They realize we cannot provide a continuous alignment due to canyons/trees/etc; but something is better than nothing.
I said we may get data at 2-3' & some in the movies; they are OK with that.
Here is my question. We want to set up our unit on mag mount on their hi rail truck and let it collect raw data to be post processed.
How do I configure to let it burn and do a 1 second epoch and store points automatically?
The auto point store is my biggest question.
If I could set collection to a distance interval, say 50-100' that would be better.
We have been using these units for almost 10 years, but never in this application.
Any input appreciated.
Roverguy,
You can do this by either collecting raw data to post process later or you can try to do RTK and use the autopooint feature.
With the collection of RAW static/ kinematic data you can collect data for post process kinematic by logging raw data to the MicroSD in the GS14 or to the controller. Especially in your case with just mounting the receiver to a mag mount and then collecting data I would choose the option to store directly to the MicroSD card in the GS14.
OK… so there are two options when storing to the MicroSD in the GS14…
1. Start the static session with your controller and then disconnecting – GS14 will continue to log raw data but with have the antenna height and starting point name you entered using the CS controller. Raw data (.m00) file will have the job name included in the name to the file
2. Start logging static when GS is turned on – settings are made so that once the GS14 is turned on and gains an autonomous position the unit will automatically start to log raw data. To stop the logging and close the session file just turn off the receiver. The name of the raw data file (.moo) will have the (by default) the last 4 digits of the serial number of the receiver with the data and time to make up the file name. You will need to manually input you antennae height in the data.
You can do these settings in both the CS controller or by using the web interface built into the receiver.
If you are using RTK you need to use the AutoPoints feature…
1. From main menu choose – Go to Work
2. Next choose Survey
3. Once in the survey application choose the green function key (Fn) and then F2 (CONFIG)
4. Page over to AutoPoint section and select “Log auto points”. Then you will be able to configure the options and then you will have the AUTO page in the main view of the Survey application where you can start and stop the AutoPoints.
5. You have options to record by distance or time and a few others. There are some QC options that monitor the quality of the position before storing
6. You can choose to have to manually start and stop recording or just automatically record
7. One thing you need to know related to storing codes. If you want to store codes with your autopoints you need to know that the system can only store points with codes if it is storing points at 1 Hz or slower. If you are only collecting points in XYZ with no codes you can collect points as fast as 0.05 Hz.
Look at the options and let me know what you think. I can email or post the details for wither method if needed.
Collecting & processing Raw data with Leica GS 14
This project has been on hold for a while, so just now getting back into the process.
I understand the manner in which to log the data; thanks to Surveythemark.
But now my question is, how do I post process the data.
My Leica rep says that trying to process basically a route that Leica Geo office doesn't handle it as individual points?
Partial quote from Leica support:
XXXXX shared your kinematic processing question with me, and I tried calling you today. As mentioned in my voice message, the LGO software is not really optimized for processing "moving" data. Although the moving data can indeed be post-processed, and you will be able to see the ambiguity resolution (i.e. "fixed", "float", etc.) epoch-by-epoch in the Processing Results, the LGO software will typically not display a "trail" of points, nor will it display a standalone coordinate value for the hundreds (or potentially, the hundreds of thousands) of individual points that might be generated. Consequently, I think you'll find it may not be suitable for the purpose you've suggested.
Sorry to be the bearer of bad news, but LGO's post-processing output is really optimized more for "surveying" applications, where point occupation is static or rapid-static.
Any thoughts?
3rd party application?
Thanks for any input.
Collecting & processing Raw data with Leica GS 14
is there some reason you're not willing to process it through your CAD software?
running carlson, i just export an RW5 file, do necessary edits within the file itself to clean it up a bit, then process the RW5 directly in CAD. haven't touched C3D in several years, but i can't imagine it can't do the same thing.
Collecting & processing Raw data with Leica GS 14
I would recommend taking a look at the GraNav software (now a NovAtel product). Historically this is used for airborne GNSS processing, but could be utilized for this type of application as well. Here is a link: http://www.novatel.com/products/software/grafnav/
I would get a demo copy and a sample of raw data in this application to process.
Collecting & processing Raw data with Leica GS 14
Thanks; that's a suggestion I was given; will try it out.
I would think your leica would process PPK sessions. That's how we do long county road locations, you should be able to process it against CORS.
Are you utilizing Leica Geo Office? The hardware is not the issue, it seems to be the processing software that is the problem.
