Global Positioning System Reference
In-Depth Information
mobile telephones. In Table 10.1, service performance is defined for single- as well
as dual-frequency users. Three signals (E5a, E5b, and L1) will be broadcast for the
OS. These signals are shown in Figures 10.1 and 10.2. By using these three signals
with differential techniques based on carrier phase processing, a very high accuracy
can be achieved. This performance will be realizable by users at any point in the
world and at any time, provided the users are equipped with receivers that process
ARNS bands
ARNS bands
RNSS bands
L1
E1
E5
E6
E2
L2
L5
GALILEO bands (navigation)
GLONASS bands (current and modernized)
GPS bands (current and modernized)
Figure 10.1
GALILEO frequency plan.
E5a signal:
Data + pilot
BPSK mod.
R =10.23 Mcps
R =50 sps
OS/CS
services
E5b signal:
Data + pilot
BPSK mod.
R =10.23 Mcps
R =250 sps
OS/CS/SOL
services
L1F signal:
Data + pilot
BOC(1,1) mod.
R =10.23 Mcps
R =250 sps
OS/CS/SOL
services
E6C signal:
Data + pilot
BPSK mod.
R =5.115 Mcps
R =1000 sps
CS service
E6P signal:
BOCcos(10,5) mod.
R =5.115 Mcps
PRS service
c
s
c
s
c
s
L1P signal:
BOCcos(15,2.5) mod.
PRS service
c
s
c
40
1.023 MHz
90
1.023 MHz
40
×
1.023 MHz
×
×
Frequency
(MHz)
L1 signal:
CASM mod.
E5 signal:
AltBOC(15,10) mod.
E6 signal:
CASM mod.
Figure 10.2
GALILEO frequency spectrum.
 
Search WWH ::




Custom Search