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Compass issue in polar regions
419 12 2019-6-18
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grey_phantom
lvl.3
Flight distance : 787474 ft
Australia
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Hi guys
I'm planning on heading to a latitude of about 80° and would like to have some idea of the compass issues that might be encountered with a Phantom 4. In particular I would like to use the Phantom 4 RTK, however experience with any P4 would be useful.
I don't want to be stuck out there with a drone that will not take off due to compass issues.
What issues am I likely going to have and is there any way around them?

Cheers
2019-6-18
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DJI Stephen
Super Moderator

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Hello and good day grey_phantom. Thank you for reaching out and for the inquiry. I hope that you will get the best information and recommendations from our valued DJI Co pilots who had flew and operated there DJI drones in the polar regions. Just friendly reminder that the DJI Phantom 4 Pro's operating temperature range is at 32° to 104°F ( 0° to 40°C ). Have a safe and happy flying always.
2019-6-18
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Anokadrone
First Officer
Flight distance : 39980 ft

United States
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Depending on your longitude, you can get some pretty healthy compass variation from true north as the lines of declination start to converge.  Here in Minnesota we also have iron ore deposits that screw with your compass as well.  Check the nav maps for variation.  80 degrees north is well above the arctic circle.  Thats getting up there.
2019-6-18
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solentlife
Captain
Flight distance : 1087530 ft
United Kingdom
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Anokadrone Posted at 6-18 13:19
Depending on your longitude, you can get some pretty healthy compass variation from true north as the lines of declination start to converge.  Here in Minnesota we also have iron ore deposits that screw with your compass as well.  Check the nav maps for variation.  80 degrees north is well above the arctic circle.  Thats getting up there.

??

As you get further north - the Magnetic North increases its difference to True North as Magnetic NP is in Alaska and moving slowly westward.

But anyway .. I think you may be approaching operational limit - but would expect it to still work.

With regard to temperature - I regularly fly my P3P and before that P3S in Baltic Winters where we go down to -25C or lower. I have many videos at -10 ... -15C ...
Its not the drone that has trouble - its you the pilot being out there in the cold !!
Plus - don't forget that 99% of touch screens do not appreciate the cold and many fail to respond reliably to touch input. LEARN your controller buttons / controls !!  
2019-6-19
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solentlife
Captain
Flight distance : 1087530 ft
United Kingdom
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Forgot to add ... Battery temperature ...........

Suggest you get one of these :

https://hobbyking.com/en_us/turn ... &___store=en_us



Runs of car ciggy socket or any 12v source such as a 3S LiPo etc.
2019-6-19
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Labroides
Captain
Flight distance : 9991457 ft
Australia
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solentlife Posted at 6-19 02:57
??

As you get further north - the Magnetic North increases its difference to True North as Magnetic NP is in Alaska and moving slowly westward.

Magnetic NP is in Alaska and moving slowly westward.
In Alaska ??
Do you want to have a second guess at that?
2019-6-19
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solentlife
Captain
Flight distance : 1087530 ft
United Kingdom
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Labroides Posted at 6-19 03:48
Magnetic NP is in Alaska and moving slowly westward.
In Alaska ??
Do you want to have a second guess at that?

Apologies ... I typed quickly while sorting other biz .. I tend to forget the boundaries of Alaska

Its in Arctic North Canada .. moving towards Arctic Russia.

It now has a northerly component to its movement as well as westward. Previously it was slower and less northerly.
2019-6-19
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Geebax
Captain
Australia
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solentlife Posted at 6-19 04:09
Apologies ... I typed quickly while sorting other biz .. I tend to forget the boundaries of Alaska

Its in Arctic North Canada .. moving towards Arctic Russia.

The South Pole just went past my front door, or perhaps it just felt like that?
2019-6-19
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Fanam
lvl.1
Canada
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Hi there! I've flown a P4 successfully, a P4P not so successfully and had an M210 RTK that wouldn't take off due to compass calibration failures at 80 deg. North in Canada. Mind you, we are very close to the Magnetic pole around those parts. I have a buddy that has issues in some areas in Svalbard (80 deg North- Norway), but those seem to be more localized.
Unfortunately- you should be prepared to  be stuck up there with a drone that won't fly due to compass issues...
2019-6-30
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solentlife
Captain
Flight distance : 1087530 ft
Czechia
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Geebax Posted at 6-19 14:25
The South Pole just went past my front door, or perhaps it just felt like that?

Should have had your camera ready
2019-6-30
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Geebax
Captain
Australia
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solentlife Posted at 6-30 23:25
Should have had your camera ready

I did run inside and grab the crappiest camera that I have in my collection, along with the camera wobble attachment, that I use for capturing special events, but when I came out it had gone past.
2019-7-1
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solentlife
Captain
Flight distance : 1087530 ft
Czechia
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Geebax Posted at 7-1 14:19
I did run inside and grab the crappiest camera that I have in my collection, along with the camera wobble attachment, that I use for capturing special events, but when I came out it had gone past.

Take it all good with the Gate ... moved yet ?
2019-7-2
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Geebax
Captain
Australia
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solentlife Posted at 7-2 02:34
Take it all good with the Gate ... moved yet ?

We have moved, lovely new place and enjoying it very much. The new owner took away the gate and replaced it with an ugly metal thing because the original did not have enough security of access.
2019-7-2
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