Car tracker (anti theft) outdoor car - RAK 7200 vs LGT-92-LI/LGT-92-AA:

End Devices (Nodes) Dragino
21

Ah you’ve met her/know her?! She does all my best corner case coverage testing! :rofl:
(IIRC = If I ReCall)

And wrt Signal Coherence its the relative device/GW closing speed that is the issue I call out - 100km/h at normal to LOS isnt a coherence problem - but may introduce land/topology or building clutter issues as objects and terrain comes between tracker and GW during the extended TX time at higher SF’s. 100Km/h directly along LOS may induce errors (that may or may not be compensated for by the FEC coding scheme) at SF’s above SF10/11…

22

What the feck is FEC?

23

Forward Error Correction.

Included in LoRa packets at a mimimum ratio of 4:5 via the coding rate parameter.

24

You think therfore you know! :wink:

…as does Stuart :slight_smile:

25

Sorry, but how do you implement the localization?

26

The RAK7200 and LGT92 (the subject of this thread) are GPS based trackers.

27

So, the idea is to use GPS for localization and LoRa for transmitting the coordinates?

28

The GPS location is sent into TTN via LoRaWAN.

In general GPS trackers are not a good fit for a TTN application, TTN policy can restict you to around 22 position reports per day.