how is RSSI measured?

RE: how is RSSI measured?

endnode — Sun, 17 Dec 2017 09:27:19 GMT

Similar on Google. Then you can come back if something unclear. Why people always shoot first question popping into their minds and hope other people will do work for them?;)

RE: how is RSSI measured?

endnode — Sun, 17 Dec 2017 09:25:19 GMT

I would say standard procedure: before you ask you search on the "search" window on this forum and Google. After 5 minutes of using key words such as RSSI, location tracking, position etc. you will come up to things like:

RE: how is RSSI measured?

Matt — Sun, 17 Dec 2017 00:54:50 GMT

You can find more about the Fathom's webinar here

www.fathomsys.com/.../

The video is here:

https://vimeo.com/247230283

RE: how is RSSI measured?

bluebeam — Sat, 16 Dec 2017 18:39:33 GMT

Thanks. Very interesting. which FAQ? i’ll read a little bit more....

RE: how is RSSI measured?

endnode — Sat, 16 Dec 2017 16:06:13 GMT

In other words your plot with having +-5dBm variations is perfectly fine even for "near to laboratory" static environment, actually once the signal gets weaker below -80dBm it's absolutely normal to see +-10dBm fluctuations or even more.

RE: how is RSSI measured?

endnode — Sat, 16 Dec 2017 16:04:51 GMT

As Matt wrote RSSI is notoriously known as unreliable source of precise location, it only works in combination with extensive knowledge of the actual topology (in 2.4GHz spectrum of course;) and combination of multiple sources/receivers typically with heavy backend processing. But you can see this in basically any Q&A on this topic on this forum (as well as all over the internet).

RE: how is RSSI measured?

Matt — Sat, 16 Dec 2017 02:12:11 GMT

Signal bouncing and interference... RSSI values along will not give a reliable distance indication. "RSSI + angle of arrival" may yield a better result; check out Fathom's webinar from this week (www.fathomsys.com/.../)