Re: Question about which hardware to use:
- From: Sam Wormley <swormley1@xxxxxxxxx>
- Date: Fri, 19 Aug 2005 22:24:47 GMT
Qwerty j plum wrote:
We are not GIS professionals; we are geologist mapping large oil & gas fields for a country in the eastern hemisphere.
What hardware, with the requisit software, should be used to gather locations with differential GPS? We understand that something like a Sportrack provides GPS with +/- 10 to 15 meters accuracy. If we correct the GPS reading with a reference receiver, we get +/- 1 or 2 meters, which is what we want.
There is a reference receiver near enough that we may use. What hardware & software should we buy that is: 1. cheap, 2. can be used in a reasonable manner in the field, 3. provides the accuracy we need - 1 meter or less?
Please reply to the group or send email to lgscorp2000-gis@xxxxxxxxxx
You'll want
o reliability
o many hours of data collection
o accuracy
o ease of operation
o GIS interface (hardware and software)
o cheap? Maybe not equipments, but perhaps cheap in terms of
productivity. Check:
http://www.trimble.com/mgis.shtml
http://www.trimble.com/mgis_gpsrec.shtmlYou'll need differential corrections... your choices will depend on latitude and longitude (satellite based corrections) or if the country or nearby countries provide radio beacon differential corrections. I suggest recording your data differentially corrected and then post processing (if there is post processing data available in your area of interest.
If you need to provide your own reference station(s) that many thousands of dollars more, but well worth it is accuracy is important.
.
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