Multicopter for polar aerial photography

Hi i’m organising an expedition to the far Canadian North on a sailing boat to stay there the winter frozen in by the ice.

I’m interested in building a multicopter for several reasons:
-aerial photography
-video recording
-as a reconnaissance device for ice patterns

I see several aspects that might be a problem:
-Temperature : we want to be able to film inn temperatures down to -15C
-GPS : the signal is not very strong in those regions… Are there alternatives to GPS navigation? Can my multicopter still fly even when the GPS stops working?
-magnetic field: the copter uses a compass for positioning and orientation. What other possibilities are there?

Does anyone have any experience or ideas on these topics



How wonderful polar aerial photography! I am a newcomer photographer and working for a popular Port Macquarie Photographer. Recently I am working on my wedding photography projects. After that I will start practicing travel photography.