[postgis-users] Represent WiFI signal via RSSI

[Darafei "Komяpa" Praliaskouski]

Robert,

WiFi signal is essentially electromagnetic signal. You can imagine it as a
light source, having all the effects like reflection and refraction. Some
naive pictures that show how wrong are the circular models can be seen
here: https://www.degruyter.com/document/doi/10.1515/phys-2019-0039/html



On Tue, Oct 18, 2022 at 1:40 PM Robert Dorinel Tureac <al376140 at uji.es>
wrote:

> Nice work there!
>
> But with that you do not represent the signal strength right? I'm just
> looking for a manner to draw that Signal. I.e. draw a polygon or circle
> with a red colour where the RSSI is stronger.
>
> El mar., 18 oct. 2022 12:34, Darafei "Komяpa" Praliaskouski <me at komzpa.net>
> escribió:
>
>> Hi,
>>
>> RSSI has very complex shapes in the city terrain, not really following a
>> usable distance formula.
>>
>> That being said I once upon a time got myself a ladder, excel spreadsheet
>> and measured one specific access point using my phone and regressed this
>> piece of formula.
>>
>> 0.2347 * exp(-0.07877 * (ap -> 'ss') :: float) as dst
>>
>>
>> On Tue, Oct 18, 2022 at 1:16 PM Robert Dorinel Tureac <al376140 at uji.es>
>> wrote:
>>
>>> Hi there guys,
>>>
>>> Is there any way/function/method/possibility to represent the signal
>>> strength of a device having the attributes RSSI and latitude-longitude?
>>>
>>> I'm trying to achieve something like this, but with no success (yet):
>>> https://duckduckgo.com/?q=rssi+signal+wifi+map&atb=v342-1&iar=images&iax=images&ia=images&iai=https%3A%2F%2Fstatic.engeniuscdn.com%2Ffaq_questions%2Fhc%2Farticle_attachments%2F360010237471%2FIn_open.jpg
>>>
>>>
>>> Thanks in advance!
>>>
>>> Cheers
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