Acceleration, gyro, GPS (

>
>
>graemel wrote:
>
>> Hi,
>> Im a fourth year student and am currently working on a project where I
am
>> attempting to track the position of a racecar in the form of a
strapdown
>> INS. I am trying to use a 2-axis accelerometer(x,y), z-axis gyroscope
and
>> also have GPS coordinates available.
>
>My $.02 to the kindest comments from Tim: if you are planning on using 
>MEMS sensors, this won't work. For INS, you need the accuracy better by 
>several orders. Consider dead reconing by the steering wheel, compass 
>and odometer instead of INS.

Although he didn't say he was going to build it, so cost might not be a
big concern, and he could then avoid MEMS.  After all, racecars cost money,
too.