GPS data from the 1993’s?

WTF?! I bought a “Navilock GPS NL-464US USB Stick” (off Amazon) as a lightweight GPS device to expand my AR.Drone. Why is that thing stuck in 1993?!

I hooked the Navilock to a MK-802+ running a recent Debian Wheezy install — all armhf, off course. After some struggeling, it finally worked (if I knew how, I would have posted how I did get it finally to work) — in a way at least.

Thing is: while the time is current, the date is 20 years in the past, as can be witnessed here with this snapshot from “cgps”:

lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqklqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x Time: 1993-09-07T22:04:26.000Z xxPRN: Elev: Azim: SNR: Used: x x Latitude: 51.892843 N xx 5 10 030 23 Y x x Longitude: 8.383873 E xx 16 56 295 18 Y x x Altitude: 73.9 m xx 29 30 084 39 Y x x Speed: 0.0 kph xx 31 14 207 23 Y x x Heading: 0.0 deg (true) xx 18 18 145 30 Y x x Climb: 0.0 m/min xx x x Status: 3D FIX (63 secs) xx x x Longitude Err: +/- 13 m xx x x Latitude Err: +/- 11 m xx x x Altitude Err: +/- 48 m xx x x Course Err: n/a xx x x Speed Err: +/- 97 kph xx x x Time offset: 619315200.535 xx x x Grid Square: JO41ev xx x mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqjmqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj {"class":"SUBFRAME","device":"/dev/ttyUSB0","tSV":29,"TOW17":42047,"frame":2,"sc aled":false,"EPHEM2":{"IODE":28,"Crs":-160,"deltan":13867,"M0":-1256856721,"Cuc" :-198,"e":16818181,"Cus":2156,"sqrtA":2701998147,"toe":16200,"FIT":0,"AODO":27}} {"class":"TPV","tag":"MID2","device":"/dev/ttyUSB0","mode":3,"time":"1993-09-07T 22:04:26.000Z","ept":0.005,"lat":51.892843404,"lon":8.383873373,"alt":73.904,"ep x":13.591,"epy":11.076,"epv":48.573,"track":0.0000,"speed":0.000,"climb":0.000," eps":27.18}

Well, 79m altitude +/- 48m isn’t that great of an resolution, but the thing here is: I want to use gpxlogger to log my flight positions — but timestamps like “”, as reported by gpsd/gpxlogger, are not very helpful at all.

I’m no GPS specialist, played around with GPS and gpsd 3 to 5 years in the past a bit — but my understanding always was that GPS comes with a rather precise time and date, so why I’m offset by roughly 20 years here?! It that GPS stick just broken?

4 thoughts on “GPS data from the 1993’s?

    • Well, retried the setup just now before heading to bed, and, well, the stick seems to have found the right decade:

      ┌───────────────────────────────────────────┐┌─────────────────────────────────┐ │ Time: 2013-04-24T22:12:59.920Z ││PRN: Elev: Azim: SNR: Used: │ │ Latitude: 51.892809 N ││ 18 23 142 43 Y │ │ Longitude: 8.384260 E ││ 21 73 111 33 Y │ │ Altitude: 98.4 m ││ 29 24 087 39 Y │ │ Speed: 0.6 kph ││ 31 08 204 18 Y │ │ Heading: 306.5 deg (true) ││ 16 61 288 23 N │ │ Climb: 5.2 m/min ││ 5 06 025 17 N │ │ Status: 3D FIX (16 secs) ││ 3 23 279 21 N │ │ Longitude Err: +/- 22 m ││ 126 28 157 28 N │ │ Latitude Err: +/- 34 m ││ │ │ Altitude Err: +/- 52 m ││ │ │ Course Err: n/a ││ │ │ Speed Err: +/- 214 kph ││ │ │ Time offset: 0.161 ││ │ │ Grid Square: JO41ev ││ │ └───────────────────────────────────────────┘└─────────────────────────────────┘

      It’s maybe still the fastest stationary GPS receiver on this continent, but at least it’s now in the right century … Still puzzled what happened yesterday, though.

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