digital compass modules

[Robin Paulson]

On 24/01/2008, Schmidt András <asch at freemail.hu> wrote:
> I have the same opinion though I don't know what INS resolves to :-).
> Could you tell what INS stands for?
> Thanks!

inertial navigation system

i.e. i know where i am now, if i measure the distance i move and the
direction i go in, i will know where i am again in the future. repeat
over and over again to continuously update my position. unfortunately,
errors are summed and quickly become quite big