Quote: Originally Posted by Chris31
There was an article somewhere about this, a SIRF3 against an old GPS with DR.
It was something like this...although the SIRF3 is showing 6 sats with 3D fix, it still doesnt really know where it is. The GPS with DR show 0 sat but can still navigate reliably.
Ill post the link if I find the article again.
OMG! i nearly fell off my chair! You actually have something good to say about this project!
I vote DR over more sensitive persoanlly but i would like a more accurate inertial system but that would cost quite a bit
Inertial is much more accurate than GPS will ever be. DR as used in these modules is a trade-off though for cost and simplicity . some day solid state accelerometers and gyros will be cheap enough to do it right though - probably in a year or 2.