| AGC |
Automatic Gain Control |
| ASCII |
American Standard Code for Information Interchange |
| DGPS |
differential global positioning system |
| DTZ |
Data Zero Time |
| EM |
electromagnetic |
| Esri |
Environmental Systems Research Institute |
| FACS |
Field Activity Collection System |
| FAN |
Field Activity Number |
| FGDC |
Federal Geographic Data Committee |
| GIS |
geographic information system |
| GPR |
ground penetrating radar |
| GPS |
Global Positioning System |
| GSSI |
Geophysical Survey Systems, Inc. |
| IIR |
Infinite Impulse Response |
| JPEG |
Joint Photographic Experts Group |
| km |
kilometer |
| KML |
Keyhole Markup Language |
| lidar |
light detection and ranging |
| m |
meter |
| m/ns |
meter per nanosecond |
| mHz |
megahertz |
| NAD83 |
North American Datum of 1983 |
| NAVD88 |
North American Vertical Datum of 1988 |
| NGS |
National Geodetic Survey |
| NMEA |
National Marine Electronics Association |
| NOAA |
National Oceanic and Atmospheric Administration |
| NPS |
National Parks Service |
| ns |
nanosecond |
| OPUS |
On-Line Positioning User Service |
| PDF |
Portable Document Format |
| s |
second |
| SPCMSC |
St. Petersburg Coastal and Marine Science Center |
| USGS |
U.S. Geological Survey |
| WGS84 |
World Geodetic System 1984 |
| XML |
Extensible Markup Language |
U.S. Department of the Interior |
U.S. Geological Survey