1D |
one dimensional |
2D |
two dimensional |
2drms |
two times distance root mean square |
3D |
three-dimensional |
ACP |
Active Control Point |
ACS |
Active Control System |
AS |
anti-spoofing |
Az |
azimuth |
c |
speed of light in a vacuum |
CACS |
Canadian Active Control System |
CCM |
Canada Centre for Mapping |
CDU |
control and display unit |
CEP |
circular error probable |
CGVD28 |
Canadian Geodetic Vertical Datum 1928 |
DoD |
United States Department of Defense |
DOP |
dilution of precision |
DoT |
United States Department of Transportation |
EDM |
electronic distance measurement |
Elev. |
elevation angle |
f |
frequency |
Φ |
measured carrier phase |
GDOP |
geometrical dilution of precision |
GIS |
geographical information system |
GPS |
Global Positioning System |
GPSIC |
Global Positioning System Information Center |
GSD |
Geodetic Survey Division |
GSD95 |
Geodetic Survey Division 1995 geoid model |
h |
ellipsoidal height |
H |
orthometric height |
HDOP |
horizontal dilution of precision |
Hz |
hertz (cycles per second) - unit of measure for frequency |
IERS |
International Earth Rotation Service |
ITRF |
IERS Terrestrial Reference Frame |
λ |
wavelength |
MHz |
zone million hertz (see Hz) |
MSE |
mean square error |
MTM |
Modified Transverse Mercator |
N |
ambiguity, or |
N |
geoid undulation |
NAD27 |
North American Datum 1927 |
NAD83 |
North American Datum 1983 |
NGDB |
National Geodetic Database (maintained by GSD) |
NGS |
U.S. National Geodetic Survey |
NRCan |
Natural Resources Canada |
NTS |
National Topographic System |
P |
code measurement |
PDOP |
positional dilution of precision |
ppm |
parts per million |
ρ |
range |
rcvr |
receiver |
RF |
radio frequency |
RINEX |
receiver independent exchange format |
rms |
root mean square |
σ |
standard deviation |
SA |
selective availability |
SEP |
spherical error probable |
SMRSS |
Surveys, Mapping and Remote Sensing Sector |
tr |
reception time |
tt |
transmission time |
UERE |
user equivalent range error |
UTM |
Universal Transverse Mercator |
VDOP |
vertical dilution of precision |
WGS84 |
World Geodetic System 1984 |
xr,yr,zr |
receiver coordinates |
xs,ys,zs |
satellite coordinates |