So I have been working with this: http://www.sparkfun.com/commerce/product_info.php?products_id=8266 Can two of these chipsets or one with an FR give a decimeter accuracy? The chipset says it supports DGPS. Or one specifically needs a receiver with phase and carrier information in the raw data.. Ranjan On Tue, Sep 28, 2010 at 1:52 AM, Timo Juhani Lindfors <timo.lindfors at iki.fi>wrote: > RANJAN <infibit at gmail.com> writes: > > So get DGPS does one need to have some sort of subscription or license > and a > > suitable firmware on the GPS chipset..? >> Yes you need an account to some GPS reference station. If you have two > receivers then you can just be your own reference station. Being your > own reference station makes things a lot easier: >> 1) You can trust that the service will not be going away. >> 2) You can use very short baselines since you can place the reference > station where you need it. >>>>-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.openmoko.org/pipermail/community/attachments/20100928/d2ca3a07/attachment-0001.htm