signal processing - How can I find process noise and measurement noise in a Kalman filter if I have a set of RSSI readings? -


im have rssi readings no idea how find measurement , process noise. way find values?

not @ all. rssi stands "received signal strength indicator" , says absolutely nothing signal-to-noise ratio related kalman filter. rssi not "well-defined" things; can mean million things:

defining "strength" of signal tricky thing. imagine you're sitting in car fm radio. rssi bars on radio's display mean? maybe:

  • the amount of energy passing through antenna port (including noise, because @ point no 1 knows noise , signal are)?
  • the amount of energy passing through selected bandpass whole ultra shortwave band (78-108 mhz, depending on region) (incl. noise)?
  • energy coming out of preamplifier (incl. noise , noise generated amplifier)?
  • energy passing through if filter, selects individual station (is signal strength want define it?)?
  • rms of voltage observed adc (the adc samples higher channel bandwidth) (is signal strength want define it?)?
  • rms of digital values after digital channel selection filter (i.t.t.s.s.a.y.w.t.d.i?)?
  • rms of digital values after fm demodulation (i.t.t.s.s.a.y.w.t.d.i?)?
  • rms of digital values after fm demodulation , audio frequency filtering mono mix (i.t.t.s.s.a.y.w.t.d.i?)?
  • rms of digital values in stereo audio signal (i.t.t.s.s.a.y.w.t.d.i?) ?
  • ...

as can imagine, systems fm radios, still relatively easy. things mobile phones, multichannel gps receivers, wifi cards, digital beamforming radars etc., rssi can mean or nothing @ all.

you have mathematically define away describe noise is. , need find formula describes exact implementation of "rssi" is, , can deduct whether knowing rssi says process noise.


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