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Re: Quel GPS utilisez-vous?

Objet : Re: Quel GPS utilisez-vous?
par verhaeghe sur 02-02-2015 15:48:01

Citation :

fafar a écrit :
Ca pourrait être intéressant sur un covoit de reunir plusieurs gps sur un même planchiste afin de comparer les données. Déjà  fait peut être?


Déjà  fait!

On a tous passé notre GPS à  Guillaupe visiblement ca ne marchait pas bien, aucun des GPS n'ayant dépassé les 30nds... Je plaisante (c'était 23nds)

Avec 1 GT31 et 1 Foretrex 201 qui fonctionne tous les 2 en doppler 1s j'ai fréquement remarqué des différences de l'ordre de 0.5nds.

Nos amis Hollandais de GPS-Speedsurfing ont eux aussi fait un grand nombre de tests en embarquant jusqu'à  5 GPS en même temps. Comme les tests n'ont pas été fait de manière très scientifiques, je ne suis pas très sur des conclusions mais voici de ce que j'en ai retenu :
=> echantionnage à  5Hz n'apporte pas de précision en plus
=> Sirf IV en positionnel est quasi aussi bonne que SIRF III en Doppler


Si aujourd'hui je devais changer mon bon vieux GT31, je crois sans hésiter que je suivrais les recommendations de nos amis hollandais :
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There are some new developments we want to share with you, with several activities on multiple GPS Devices in the last months we want you to inform you all as good as possible.

é¢ThingSee One - The shipment of the first beta's has been delayed for a few weeks, so we expected the first beta for our Tech Team next week. Our developers already started working on the coding of the software and we can't wait to test it in real live. We have a good and open communication line with the team behind ThingSee One and looking forward to work together. Based on the specifications our Tech Team has really high expectations about this device. With the open software stack we have all possibilties to adjust the software for our specific needs.
é¢GW-52 - A few weeks ago a new GPS Tracker was introduced by Locosytech, the manufacturer of the GT-31. We have some mixed feelings about this device. Ofcourse it's really positive that a manufacturer brings a product on the market with dedicated software for speedsurfing. But on the other hand we are disapppointed by the current product. We have serious doubts about the build quality, memory & battery capabilities and the poor waterproof rating. In the development stage the Tech Team has addressed a lot of those requirements already to Locosystech and untill now we still don't know why those requirements where not implemented in the GW-52. Both the GPS-Speedsurfing.com & GPS Teamchallenge Community have responded to Locosystech, so we have to wait in the next weeks what they will do with it. We haven't received the official GW-52 yet, so the official approval for GPS-Speedsurfing.com by Manfred Fuchs has not been done yet.
é¢General GPS Devices - as mentioned earlier we have had some very constructive meetings with two major manufactures of GPS Devices. It's a bit early to give all the details in this stage, but one of this manufactures is really interested to work together with us. The hardware of their devices on the market are already "spot-on" , only on the software & logging part we will need some adjusments. In the next weeks we will continue to explore the opportunities together.
So a lot of work behind the scenes, we keep you posted by the forum & Facebook !

GP3S Crew