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SF-2110 User Guide – Rev. A
IODC
Issue of Data, Clock - The IODC indicates th
issue number of the data set and thereby provides
the user with a convenient means of detecting any
change in the correction parameters. The transmitted
IODC will be different from any value transmitted by
the satellite during the preceding seven days.
e
s to transmit satellite data. The
code, or Y-code, and a 50 bit/second
dary L-Band carrier
e
o
.
JPL
Jet Propulsion Laboratory.
Kbps
kilobits per second.
L-Band
the group of radio frequencies extending
from approximately 400MHz to approximately
1600MHz. The GPS carrier frequencies L1
(1575.4MHz) and L2 (1227.6 MHz) are in the L-Band
range.
L1 carrier frequency
the primary L-Band carrier
used by GPS satellite
frequency is 1575.42MHz. It is modulated by C/A
code, P-
navigation message. The bandwidth of this signal is
1.023MHz.
L2 carrier frequency
the secon
used by GPS satellites to transmit satellite data. Th
frequency is 1227.6MHz. It is modulated by P-code,
or Y-code, and a 50 bit/second navigation message.
The bandwidth of this signal is 10.23MHz.
lat
see latitude.
latitude (lat)
the north/south component of the
coordinate of a point on the surface on the earth;
expressed in angular measurement from the plane of
the equator to a line from the center of the earth t
the point of interest. Often abbreviated as Lat.
LED
acronym for Light Emitting Diode.
LEMO
a type of data or power connector
LES
Land Earth Station
the point on the earth’s
surface where data is up linked to a satellite.
Glossary-85
Содержание SF-2110
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