Just an idea here and yes I know its out of DIY community price range but could the IMU on autopilots in general be replaced with Ring Laser Gyro to improve overall performance e.g. position, IMU drift etc. Just a thought.
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http://www.draper.com/digest99/paper1.pdf
Written in 1998, it’s interesting to compare what was predicted then, to what the “state of play” is now.
How far off were the authors?
In terms of nav technology trends filtering down to hobby/amatuer users & applications, I think the next big real world benefit hobby UAV flyers will be able to make use of (i.e. associated hardware will be cost/mass/volume wise within the grasp of amatuer UAV users), will be realised when Galileo is launched, and manufacturers start producing and retailing hardware to replace GPS units.
With the market for nav hardware at the consumer level in all its forms now so well developed and established, I suspect "Moores Law" will kick in, both in terms of development and price drop, a lot lot faster for Galileo hardware/software products than it did for consumer level GPS products.
Then we only need to brief up the processing power of the autopilot. How about GPS processors with Ring laser Gyro, now that make a autopilot!
Garry