CHC x91 and X900s-Opus RTK GCP solution?
Greetings -
Using the instructions seen here https://x9gps.com/bin/X9x_AIO_Manual_RevD_S_077_Web.pdf https://x9gps.com/bin/X9x_AIO_Manual_RevD_S_077_Web.pdf>
And the CHC GNSS base stations, (X91 and X900s Opus) with the supplied Windows Mobile PDA, SurvCE software, my goal is to create a high quality UTM WGS84 georeference control point in the sub 20cm of global accuracy or less range. The narrower the better.
Although I can connect to either device, specify settings, and run a survey with a good satellite constellation, I am only ever receiving data from one rover at a time in Autonomous mode.
A solution is never fixed, (only Autonomous status of collection) and I am unable to get both devices on the same frequency to speak together in an RTK solution.
Because of this issue I am only ever seeing accuracy in the ~2 meter range, which is not sufficient.
From my understanding the X900s-Opus may not be capable of true RTK work and may not be capable of communicating with the X91 and correcting. That said, the X91 should be capable.
I tried reconfiguring the Frequency settings for both X91 and X900-opus in the CHC Configure tool to be on same band and protocol for bluetooth connectivity, but after setting and opening up the SurvCE software the same frequencies are not available for either device and hence no communication occurs. When i try to reset the frequency manually it does not save to the device.
Alternatively, when I try to use the LT30 GPS handheld terminal for cellular or TCP/IP RTK, the system requests information about a NTRP caster for internet RTK. In the past I have used the CORS base station TIBB (https://www.ngs.noaa.gov/cgi-cors/corsage_2.prl?site=tibb) for corrections in inertial explorer, but this process is largely automated and I am not sure how to configure this.
If this cannot be settled, I would like to know if there are any resources about recording a Raw GPS stream from one of these types of base stations for ingestion into Novatel’s Inertial explorer post-processing software.(File formatting, etc)
I am new to surveying with these types of ground control base stations and have only used LidarUSA’s Snoopy type devices (Novatel IMU+Pinwheel GNSS receiver) for Inertial Explorer in the past.
This is a lot of information, so I appreciate anyone who takes the time to sort through it and attempt to generate some understanding!
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