Operating Your SlantRange Sensor – SlantRange

Set up Emlid RTK base station, extend the tripod to full height, and power on
- Minimum 5 minute accumulation time should finish by the time the rest of the equipment is prepped for flight; accuracy will continue to improve the longer the base station is powered on. Do not move the base station after powering on.
Inspect aircraft
- IMPORTANT: verify the GPS mast thumbscrews are tightened into the top of the aircraft legs. If they come loose and fold down in flight, they will contact the propellers. Verify SlantRange sensor window is clear from debris and loose cables are tied down.
Monitor wind and cloud cover, modify flight direction and speed if needed.
Power on hand controller and aircraft
- As a reminder, do not shade the AIS when pushing the button.
Wait for solid three lights on AIS indicating RTK fix
- Note: If AIS lights are green and blinking yellow, the SlantRange sensor needs additional accelerometer data for its calibration. Pick up the aircraft and rotate, all three AIS lights will begin blinking after a few seconds.
Begin data capture by pressing the button on AIS, a solid yellow light will appear for a few seconds indicating camera initialization; wait for blinking green light indicating data capture
Begin mission through flight planned

As you’re preparing to operate the sensor, you may notice different light codes on the AIS. Here are some of the most common codes you’ll encounter:

Light Code	Meaning
Blinking red, blinking yellow, blinking green	The sensor is waiting for RTCM messages from the base station
Solid red, blinking yellow, blinking green	The sensor is communicating with the RTK base station
Solid red, solid yellow, blinking green	The sensor is in RTK float status
Solid red, solid yellow, blinking green	The sensor has reached RTK fix, ready to begin data collection

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