Stephen Salyards (salyards@EURIDICE.ESS.UCLA.EDU)
Wed, 28 Sep 1994 13:42:54 PDT
> The next issue is the onslaught of handheld GPS receivers - why bother
> learning how to use the compass and map when the GPS will tell you exactly
> where you are?
As a specialist in GPS I can tell you a lot of stories about times
I wished that operators had some basic map and compass skills. The
most frequent is in aligning the antenna. We work with high-precision
GPS and our external antennas must be aligned with north for the most
accurate measurements. To do that we use a compass. And the magnetic
declination must to corrected for. Now that is a challange for
some of our people.
Although GPS is nice, and a little unit can tell you where you are,
it does have its limitations, particularly in the way of batteries.
Also, using a direct line from GPS may be ok in the desert, but with
vegitation around, I would rather shoot a line with a compass and
have a better feel for the ground truth I will be walking around.
Technology will improve, but a good background can still reduce your
Southern California Earthquake Center GPS Group @ UCLA
not a "used to be..."
Terry Howerton Sakima Group, Inc. SCOUTER Magazine Kansas City