GPS soft baseband processing
Uwe Klein
wiederling at googlemail.com
Sun Sep 7 10:46:16 CEST 2008
On 9/7/08, Flemming Richter Mikkelsen <quatrox at gmail.com> wrote:
> "Our automatic geotagging technology solves these
> problems. A fragment of RAW GPS RF data is captured
> in 0.2 seconds and then stored alongside the digital image
> and the processing is performed later on a PC. Because
> we separate the GPS capture from the GPS processing,
> our technology maintains the traditional "instamatic" user
> experience we are all used to and then pulls consumers
> to experience a far more interesting way to search and
> share photographs later."
Interesting.
Around 1995 I used about the same technique to sync spectrometer
data to an external authoritative timesource ( in that case the DCF77
signal encoded into 10ms dataframes ) time recovery could achieve
better than 100us
uwe
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