3 ms·
That is not what dead reckoning is. You’re idea is simply flying by other instrumentation. Dead reckoning would be the accelerometer only, and estimating an a
by snibsss 8y ago
That is not what dead reckoning is.
You’re idea is simply flying by other instrumentation.
Dead reckoning would be the accelerometer only, and estimating an assumed possible position based on known facts about the vehicle’s inertia and direction over time.
- travisjungroth 8y agoUsing an accelerometer wouldn’t be dead reckoning either. Dead reckoning in an aircraft is measuring airspeed and heading and correcting for expected wind. Using an accelerometer is intertidal navigation.
- snibsss 8y ago> measuring airspeed > accelerometer What exactly would imagine an accelerometer meters? Something other than speed?
- travisjungroth 8y agoAccelerometers measure acceleration. This can be used to calculate the groundspeed of the aircraft. Groundspeed is different than airspeed. For example, if a drone was hovering in a 5mph wind, its groundspeed is 0 and its airspeed is 5mph. I was a flight instructor for a few years, and have taught many students how to do dead reckoning. That doesn’t mean I’m right, but hopefully gives me enough credibility that you’ll consider my argument. Each of the Wikipedia articles for these topics is robust if you’d like more detail.
- snovv_crash 8y agoAnything without a global reference is dead reckoning. Optical flow sensors just give you a rotational velocity relative to ground. They don't globally locate you. If you combine it with an altitude sensor it gives the same as an odometer would in a car, or the number of steps you take while hiking.