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About
In order to properly use the RTK payload, it must receive correction data. Below are the two methods used to get this data to the D4K.
Using a Base Station
The base station approach is the simpler of the two, but requires more hardware out in the field.
The base station must be powered on and connected to the comms box via ethernet. The base station’s webpage can be visited at 192.168.143.31, to switch between survey-in and known position. Once the base station has surveyed-in or position has been entered, it will start sending corrections data through the comms box.
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More detail concerning base station setup can be found on Sentera’s support site |
Using NTRIP
NTRIP is a slightly more complicated solution, but requires less hardware.
Requirements:
Laptop with an internet connection.
An active account with the correction data from whatever state you are trying to fly out of (i.e. MNCORS for minnesota).
Ethernet cable for connecting to the comms box (laptop will be using wifi).
Setup
In order to use this corrections method, the NTRIP client is needed. It can be downloaded from the Sentera support pages (link to the right). The file must be extracted (unzipped) before use.
In the downloaded folder, run 'strscr.exe'. This should open the app.
Once open, select NTRIP Client under Type, and hit the Opt button, as shown. This will bring up an options panel, where the caster host and port should be entered, as shown.
Within the caster host, you need to find a proper mount point. Select the ‘Ntrip…' button to bring up a list. Select a mount point using RTCMv3, and copy it’s name. Paste it’s name into the mount point box. Enter your User-ID and Password, and hit OK.
Setup the UDP link as shown by clicking on the ‘Opt’ Button for the Output. Enter the broadcast options shown and hit OK.
Usage
Before NTRIP can be used, it needs an approximate location to work off of. To enter this, select the options button. From there, enter approximate coordinates (in decimal and meters) to the appropriate boxes and hit OK.
At this time, the link can be started, assuming the comms box is connected via ethernet. To do so, hit ‘Start’ on the client. You should see bytes start to count up, as well as a green box by Input. Allow a short amount of time for this to affect the PHX payload. Watch Fly PHX to check the type of GPS fix, or watch the lights on the RTK payload (see D4K RTK - Anatomy for light codes)
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About
This section will describe how to use the Sentera RTK Base Station (Gen 2) with the Double 4K RTK payload for PHX.
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For use with a 3rd party base station please contact support@sentera.com. |
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This is not the user guide for the Sentera RTK base station. |
Equipment
Sentera RTK Base Station
Ethernet Cable
PHX System & D4K RTK Payload
How To Use
This section will describe how to use the Sentera RTK base station with the D4K RTK payload.
Please refer to the RTK Base Station User Guide for more detailed information on base station operation.
Setup Base Station
Set the base station up in a location with a clear view of the sky.
Do not place under or directly next to:
Trees
Buildings
Large metal objects
Tailgates
Connect To CommsBox
Connect the Ethernet cable from the base station to the CommsBox.
Power On
Power the base station and CommsBox on using the provided USB cables and batteries.
Survey Location
There are 2 ways to survey the base station location:
Self-Survey
This is the default mode of operation for the base station.
After the base station is powered on it will acquire a GPS fix and perform an approximately 120 second sampling period. After the sampling period the base station will have self surveyed its current location and be ready to transmit corrections data.
The self survey location/reference point is accurate to approximately 1.5m. This may not align exactly with truth. For the highest accuracy to ground truth use the known location method below.
Known Location
If the operation location has a known surveyed point, the latitude, longitude, and altitude information of the point can be entered into the base station via the webpage and used as the reference point.
This is useful, as a known survey point gives the highest accuracy in relation to ground truth.
To access the base station webpage:
Webpage:
192.168.143.31
or use the button built into Fly PHX:
Application Settings>Help>System Links>RTK Base Station
Base Station Webpage
To access the base station webpage use either the button built into Fly PHX:
Application Settings>Help>System Links>RTK Base Station
Or enter the following IP address into a web browser:
192.168.143.31
Assemble Aircraft & Payload
Assemble the aircraft and payload as normal.
Power on the aircraft.
Connect to Fly PHX
Connect your laptop or iPad to the CommsBox via Wi-Fi and launch Fly PHX.
Verify RTK Fix
Use the camera indicator icon at the top of the Fly screen to verify the payload has an RTK fix.
