59 lines
2.0 KiB
Nix
59 lines
2.0 KiB
Nix
# satellite-gtk: <https://codeberg.org/tpikonen/satellite>
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# - presents GPS tracking *details* in a graphical way
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# - shows which satellites are in view, their SNR, and the subset currently being used for triangulation
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# - shows fix coordinates (time, lat, long, altitude, speed)
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#
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### how to read the bargraph (example):
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#
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# 14 | XXXXXXXXXXXXX 26
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# 76 | =========== 23
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# 15 | XXXXXXXX 16
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# =
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# +----------------|
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# 0 30
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#
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# ^ this view means:
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# - GPS is receiving from sats 14, 76, 15 (by PRN) -- this comes from GSGSV NMEA data (Satellites in-View)
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# - sat 14 and 15 (shaded solid) are "active" -- this comes from GSGSA NMEA data ("Satellites Active")
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# - i believe "active" means "this sat was used in the most recent solution"
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#
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### text fields
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# - Modes (GP,GL,GA) ...
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# one letter each, indicating the mode for GPS, GLONASS, Galileo sats:
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# - N = no fix
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# - A = autonomous
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# - D = differential mode
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# - E = estimated (dead reckoning)
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# - etc
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# - Active / in use sats
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# - A/U, where A = number of satellites used in the previous fix,
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# U = number of satellites mentioned in latest GNS + GGA messages
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# - Receiving sats
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# shows the count of sats with non-zero SNR, from GSV messages
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# - Visible sats
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# shows the count of sats from GSV messages
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# - Age of update / fix
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# - Sys. Time
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# - Latitude
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# - Longitude
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# - Altitude
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# - Geoidal separation
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# - Speed
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# - True Course
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# - PDOP/HDOP/VDOP
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# - shows how sensitive the reported location is to measurement error (low values are better)
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# - HDOP = horizontal sensitivity, VDOP = vertical sensitivity, PDOP = positional (d) sensitivity
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# - 1-2 => excellent fix
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# - >10 => low confidence fix; recommended to discard the fix
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# - <https://en.wikipedia.org/wiki/Dilution_of_precision_(navigation)>
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#
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{ ... }:
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{
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sane.programs.satellite = {
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sandbox.whitelistDbus = [
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"system" #< reads NMEA data via ModemManager
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];
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sandbox.whitelistWayland = true;
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};
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}
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