The EVO3x system implements state-of-the-art integration network RTK services that are used to post-process geotagged photos for survey-grade 3D accuracy.
To use the network RTK correction, you must be subscribed to the appropriate service through Skycatch. The network RTK logger must be accessed through a mobile device such as a cell phone or tablet with internet connection. The mobile device must have a GPS receiver as devices without a GPS receiver will not work.
Network RTK logging or local GPS rover correction must be started at the data collection location at least 5 minutes before the first flight is performed.
Begin Recording an Observation (If using Network RTK logging - TopNet, Jenoba):
- Open https://ntrip-web.skycatch.net/ on your mobile device.
- Log in using the appropriate RTK login credentials for your organization.
- Select a Network RTK provider appropriate for your organization and location.
*Note:* Do not use a desktop or laptop computer.*
- Press “Get Current Location” at the top of the logger screen. Your latitude, longitude, and altitude will be displayed.
- Check on a mapping app such as Google Maps or Apple Maps on your mobile device that the location is correct.
After confirming the location is correct, click “start logging.” When the log has been started, logging information such as start time and date will be displayed, with a logging status. Wait for the status to change to “started” in green. The RTK logger must display as “started”, or correction data will not be collected during the flight. Please wait at least 5 minutes before starting the first flight.
You should leave the RTK logger running during the data collection flight(s). You can close your mobile browser while flying, since the logger will continue to record corrections in the background.
Important usage note: If you plan to upload multiple flights to Skycatch for processing as a single area, you must use only 1 correction log (observation) per upload. For example, if you plan to fly in the morning, break for lunch, and continue flying the same site after lunch, you will need to keep the log running and submit one observation for the entire dataset. This is the case for both local base and VRS corrections.
Halting the Logger
After flying the data collection missions as outlined in the following chapters, log in again to https://ntrip-web.skycatch.net/ and click “stop” on the line that corresponds to the log you started earlier. Wait for the status to change to “stopped.” No further actions should be needed.