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Why would you describe yourself that way because you are describing yourself perfectly  .I am a qualified in land surveying that is a person who understands what points of reference are here something else I am qualified in electronics as in how things work. Parrot the company gave me everything all the real time data. As for the term fly away if there is no last GPS when its landed or crashed that would make everything to do with positioning points fake. As you believe the internet is a place were depth of knowledge can be found you will have found after reading this.