ubuntu-phone team mailing list archive

[Alan Bell <alanbell@xxxxxxxxxx>]

so, currently it can see 5 space vehicles, which should be enough to get 
a fix (should be enough for an altitude fix)

phablet@ubuntu-phablet:~$ ubuntu-location-serviced-cli --bus system 
--get --property visible_space_vehicles
Visible space vehicles:
    (type: gps, prn: 8, snr: 0, has_almanac_data: 0, 
has_ephimeris_data: 0, used_in_fix: 0, azimuth: 0 deg, elevation: 0 deg)
    (type: gps, prn: 16, snr: 21, has_almanac_data: 0, 
has_ephimeris_data: 0, used_in_fix: 0, azimuth: 0 deg, elevation: 0 deg)
    (type: gps, prn: 21, snr: 23, has_almanac_data: 0, 
has_ephimeris_data: 0, used_in_fix: 0, azimuth: 0 deg, elevation: 0 deg)
    (type: gps, prn: 26, snr: 28, has_almanac_data: 0, 
has_ephimeris_data: 0, used_in_fix: 0, azimuth: 0 deg, elevation: 0 deg)
    (type: gps, prn: 27, snr: 0, has_almanac_data: 0, 
has_ephimeris_data: 0, used_in_fix: 0, azimuth: 0 deg, elevation: 0 deg)
Attempted to unregister path (path[0] = com path[1] = ubuntu) which 
isn't registered

reading https://en.wikipedia.org/wiki/GPS_signals reveals that the prn 
basically identifies the satellite, snr might be a signal to noise ratio 
but having 0 as has_ephimeris doesn't look so good. What is the expected 
output of visible_space_vehicles?

Alan.