On Thu, Sep 12, 2013 at 8:14 PM, Rob Studdert <[email protected]> wrote:
> When it works it seems pretty good but it does take an extraordinarily > long time to lock sometimes (noticeable when the phone takes seconds) > and it's really touch on batteries too. Getting a fast GPS lock depends on having up-to-date ephemeris data, which is broadcast by the satellites. A phone is on pretty much all the time, so it should always have up-to-date ephemeris data. (Also, a phone could "cheat" by getting ephemeris data from cell towers or the Internet; I'm not sure if they do that or not.) The O-GPS1 is probably used less frequently, so it's likely not to have recent ephemeris data at startup. It might also forget its ephemeris data when the batteries are removed. Getting an initial fix without ephemeris data can take a lot longer. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
