Which brings me to a question I've often wondered: why aren't mems
accelerometer manufactures leveraging the magic of modern semiconductor
manufacturing putting thousands of sensors on a single die and averaging them
ondie to achieve better accuracy?
On Jan 18, 2016, at 10:39 PM, Henry Spencer <hspencer@xxxxxxxxxxxxx> wrote:
On Tue, 19 Jan 2016, Ben Brockert wrote:
I talked with a guy who had done this with MEMS IMUs at the suborbital
conference and the general take is that you get a signal that is sqrt(number
of sensors) times as good as a single sensor.
Yes, that's the standard result for averaging multiple noisy data sources,
subject to certain assumptions about the details. Which is to say, it's an
expensive way to get big improvements in accuracy, especially since those
crucial assumptions might not be *exactly* true.
Henry
