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Post by deniseund on Jul 25, 2017 15:07:58 GMT -7
We are having an issue with our ground station- we are unable to get the dish to point at the payloads. We think the issue is that the center bearing calibration is off (specifically the correct direction with respect to north). How do we reset it so that it is oriented in the correct direction? It seems that it does not know where north actually is. All of the incoming data seems correct, the ground station is just pointing 90- 180 degrees away from where the payloads are.
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Post by Austin MnSGC on Jul 26, 2017 6:41:01 GMT -7
The software treats 0 degrees as North, 90 degrees as East, etc., but all pointing requires the reference of the center bearing. If you're using the IMU to determine a center bearing, make sure that the center bearing listed in the Ground Station Data table is correct. You can check this with a compass. If it's 180 degrees off, it's possible that the IMU is on backwards.
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Post by deniseund on Jul 27, 2017 9:00:24 GMT -7
So can we manually change the center bearing in the antenna tracker program each time we start up the ground station, or is it something that will automatically populate? We did see that some teams had issues with the servos needing to be manually re zeroed if they had been physically moved a lot and were unsure if that could be contributing to the problem. The IMU is on straight, the degrees off is closer to 90 than 180.
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Post by Trevor MSGC on Jul 27, 2017 9:43:48 GMT -7
The center bearing is automatically populated based on the output data coming from the IMU. If the IMU is consistently off by that amount I would recommend recalibrating the IMU and seeing if that fixes the problem.
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