"DSK" wrote in message
.. .
Capt.Mooron wrote:
Then it's a Fluxgate Compass on a GPS Receiver...

Yep.

... GPS cannot give you compass directions without movement. Deal with
it.


Yes, it can. Deal with it.

http://www.mx-marine.com/downloads/m...nual_rev12.pdf

Scroll down to page 10, where it explains that this unit is two GPS
receivers in a fixed mount (it also has a gyro "in case of GPS signal
blockage).

The link seems to get blocked.... anyway if two GPS Recievers are
comunicating data you effectively have replicated " 2 waypoints"... or
"movement"..... after that it's a matter of calcs. I was referencing a
single GPS Reciever.


There is a similar suitcase-sized instrument for surveyors, but I can't
find a link to one.

There are several types. again it's remote receivers communicating with the
base unit. A single receiver can NOT give you bearing without alternate
input. You cannot point a single GPS to a bearing from a static position.
That's a fact Doug. Deal with it. :-)

BTW- don't let my years of experience in Total Station and GPS Survey curb
your opinion of my statements! :-)
You are aware of course that climatic conditions affect accuracy on GPS
Survey Receivers. You cannot get better than centimetre vertical accuracy on
dynamic receivers and Static Collectors are left for hours to download and
average data.

CM