ST2276
Scientech Technologies Pvt. Ltd.
54
Civilian code :
See C/ A code.
Clock bias :
The difference between the clock’s indicated time and true universal time.
Clock offset:
Constant difference in the time reading between two clocks.
Code division multiple access (CDMA) :
A method of frequency reuse whereby many radios use the same frequency but each
one has a unique code. GPS uses CDMA techniques with Gold's codes for their
unique cross-correlation properties.
Code phase GPS :
GPS measurements based on the C/A code.
Computer-aided dispatch :
An automated system for processing dispatch business and automating many of the
tasks typically performed by a dispatcher. Abbreviated CAD (not to be confused with
computer-aided design which is also known as CAD) is application software with
numerous features and functions. A basic CAD system provides the integrated
capability to process calls for service, fleet management and geographical referencing.
Control segment :
A world-wide network of GPS monitor and control stations that ensure the accuracy
of satellite positions and their clocks.
Cycle slip :
A discontinuity in the measured carrier beat phase resulting from a temporary loss-of
lock in the carrier tracking loop of a GPS receiver
Data message :
A message included in the GPS signal which reports the satellite's location, lock
corrections and health. Included is rough information about the other satellites in the
constellation.
DGPS - see differential positioning?
Differential positioning - DGPSA technique used to improve positioning or
navigation accuracy by determining the positioning error at a known location and
subsequently incorporating a corrective factor (by real-time transmission of
corrections or by post processing) into the position calculations of another receiver
operating in the same area and simultaneously tracking the same satellites.
HiK-Consulting