USGS collection of high-accuracy GPS point data
Detailed Description
Figure 3: High-precision GPS unit collecting ground control point data.
Sources/Usage
Public Domain.
Photographer - Aaron Murphy, USGS, Biologist, amurphy@usgs.gov
Figure 3: High-precision GPS unit collecting ground control point data.
Public Domain.
Photographer - Aaron Murphy, USGS, Biologist, amurphy@usgs.gov