Is GPS enough to Establish UAV Drone Autopilot?

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In our journey to make the least complex and affordable UAV Drone autopilot accessible, we're debating whether we require a barometric weight sensor or can do sensible elevation control with GPS alone. The old reply to this was the GPS alone wouldn't work- -not just were slips of to the extent that 10s of meters, yet glitching could abandon you without any height information at all for a long time at once.

However, the more up to date Sirf III chipsets are much better at elevation figuring, and the considerably fresher yet ublox5 GPS module is just about on a par with a weight sensor at height.

The best approach to advise is to test a weight sensor with no holds barred against GPS under fluctuating condition. Here's a paper that did simply that, utilizing the more established Sirf II chipset.

Jack Crossfire has been trying more up to date GPS, including both the Sirf III-based Em406 that we utilize and the ublox5, and his information is additionally empowering.

Shockingly this isn't adjusted so there are no units on the scale, and we can't compute irrefutably the failure. Be that as it may given that the information was taken in a heli and he's most likely flying at around 30m, my sense is that we're taking a gander at lapses of short of what 6m and no insane glitches.

Provided that this is true, that is inside the usable reach for us. We're commonly taking a gander at holding height around 50-100m, so single-digit variety is worthy. It's not flawless, yet managing without a weight sensor might spare us about $25 on the autopilot (keeping it beneath the enchantment $100 figure), and disentangle adjustment and instrument-compartment plan (no compelling reason to weight disengage it).

I've got a weight sensor impending and will do a legitimate no holds barred with the Em406 and the surface-mount Em312 (which will be inherent to the autopilot on the preparation form) under different conditions before settling on an official conclusion, however for the time being we're wagering on GPS being sufficient (and showing signs of improvement) to do the trap.

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