Santa is testing his new SteSle[tm]? *) Kidding aside, maybe it is an idea to see if the position reported by the various GPS starts to "wander"? I assume any spoofing/scrambling should be noticable too, apart from the SV plot that LH reports. Maybe good GPS reject "implausible" SV locations from the location solution?
Wilko *) Stealthy Sled > On 16 Nov 2021, at 13:15, Dana Whitlow <[email protected]> wrote: > > Dan, in recent years I've read that DOD (or some such agency) has been > running > spoofing tests here and there, but always in remote thinly-populated areas > (for > what should be obvious reasons). > > As to why not all your receivers exhibit the "finger", I point out that the > appearance > of a GPS satellite "in the hole" must be treated as an exception, and > different > combinations of receiver HW & FW with different analysis & display SW could > plausibly react differently to such exceptions. I suppose such behavior > should > be called "bugs", but I would not be too harsh on the designers unless this > "bug" > also led to erroneous PVT output. > > In any event, about all I can say is "What a grand mystery!". > > Dana > > >> On Mon, Nov 15, 2021 at 8:24 PM Dan Kemppainen <[email protected]> >> wrote: >> >> Hi, >> >> The adafruit board had a run with the LTE-LITE and Ublox. Adafruit board >> shows no birds above the north pole. Same as does the LTE-LITE on this >> run. Again, the Ublox shows them up there according to LH. (At least >> everything is consistent!) (The curious of you can view the attached plots) >> >> Currently running some logs of raw data from all three GPS modules. >> We'll give the logs 24 hours and run them through U-Center tomorrow. >> >> As for right now, eliminating the antenna and mounting location are the >> most important part. It's getting to be winter here, and snow makes >> getting to the antenna difficult/dangerous. >> >> >> Dana, >> >> I would be highly surprised if anyone were spoofing GPS here. We're >> pretty much in the middle of nowhere. Besides, why only Ublox modules >> giving the fits on LH? >> >> >> Keelan, >> >> Thus the confusion as to why there's birds above the north pole. This >> has happened on two PC's with Two different models of Ublox Modules. Two >> other brand modules seem OK on LH. >> >> Certainly odd. >> >> Thanks, >> Dan >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] -- To unsubscribe send >> an email to [email protected] >> To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
