My application was outdoor, urban. Testing was indoor.
Bench testing with all components stationary, I was seeing the RSSI data
change by nearly 50% over a period of several minutes.
This was in a typical office setting. I reasoned that if I couldn't get a
stable reading there, I had no hope of useful data in unpredictable urban
setting.

At the time, I believe some of my limitations were how the ESP was handling
the RSSI - it doesn't expose raw data.
I suspect that a different radio tech may be able to produce better data,
but that was outside the range of my specific project. (read: outside the
range of what my customer was willing to fund)



On Mon, Oct 7, 2019 at 10:37 AM Neil <picdude3@narwani.org> wrote:

> Was this indoor or outdoor?
>
>
>
> On 10/7/2019 10:57 AM, Denny Esterline wrote:
> > A couple years ago I played with a the RSSI (received signal strength
> > indicator) data from the ESP8266 over WiFi.
> > At that time I was looking for a gross distance indicator (below 10 fee=
t,
> > over 30 feet) and I come to the conclusion that
> > I couldn't trust it. For my application there were far too many externa=
l
> > factors that would effect the data.
> >
> > -Denny
> >
> >
> > On Mon, Oct 7, 2019 at 7:43 AM Neil <picdude3@narwani.org> wrote:
> >
> >> Hi,
> >>
> >> How realistic would it be to locate an object on a field using signal
> >> strength?  I'm thinking the (moving) object would transmit (LoRa?) and
> >> there would be receivers around the field.
> >> At first pass, I'm thinking the transmitter would send numbers (change=
s
> >> each on each transmission), and the receivers can record the signal
> >> strengths when they receive each value, then correlate those values to
> >> get a location.
> >> I'm just not sure how realistic it would be to get the position of the
> >> object to within say a few feet.
> >> No, GPS is not a workable option for this.
> >>
> >> Cheers,
> >> -Neil.
> >>
> >> --
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