I am generally having a great time with my Emlid Reach RS3 so far, and have spent a number of hours with it out in the field.
My most significant issue so far is the amount of effort it sometimes takes to re-calibrate the IMU for the tilt compensation (typically after remaining stationary for a bit, or after losing data connection to an NTRIP source). Once the NTRIP source is re-established and stable, or once I start moving again, and I am in the “move the receiver” alert state, sometimes it takes some pretty substantial movement for me to get the IMU back to a green FIX state.
I’ve tried moving in small circles, figure 8s, long slow tilts in 4 directions, walking with the pole while tilting the receiver, and sometimes it takes 30 seconds to a minute of sporadic walking and/or pole movement for me to get back to a ready state. Is this normal?
I’ve had the same experience with both the original factory firmware, and now having updated to 33 Beta 2.
Any feedback or suggestions on this would be much appreciated! Thank you!
Our Reach RS3 receiver works as you described, so I would say it’s ‘normal’. However, I noticed that it does not need to be moved much or in any specific way in order to get the IMU working again. I think if the IMU sensor is triggered by any movement it starts the re-calibration, so as long as you keep it moving (rocking slightly back and forth is enough) it will kick in eventually.
I’d like to investigate the issue further. Does the tilt feature consistently take 30–60 seconds to recalibrate, or is it intermittent? Also, did you experience any issues with the accuracy of the results?
The calibration time/effort has definitely been varied. There are times where for example, I lose an NTRIP data source, which often requires re-calibration, and the IMU goes from “move the receiver” to a FIX almost instantly, and without much movement required from me. Other times, I get this 30-60 second process of re-calibration, and it’s hard to predict. If I had to guess I’d say about 40-50% of my re-calibrations are on the difficult side.
Accuracy of the results, once a fix is achieved generally seem quite good, no matter how long it took to calibrate the IMU.
@jsalingerg Thank you for the additional information! Please reproduce the issue and generate the Full System Report right after. I share our guide on how to generate the Full System report. Since the report might contain some sensitive data, I suggest sending it to support@emlid.com. We will check it further.
I was able to do a full system report after a long calibration today, and sent that over to you all at support@emlid.com. Happy to help out and send more data or try anything you’d like after you take a look at the data!
@jsalingerg I’ve received the Full System Report, thank you! I’m reviewing it with the team now. Let’s continue the conversation via email to keep everything centralized.
