Global Positioning System Reference
In-Depth Information
the requirements and regulations of the International Maritime Organization (IMO)
and the ICAO for the detection of emergency beacons. It will be backward compati-
ble with the COSPAS-SARSAT system to efficiently contribute to this international
SAR effort.
GALILEO SAR services will provide enhanced service offerings with significant
improvements:
Reduced detection, localization, and confirmation delay;
Extended distress message with additional information to improve SAR oper-
ations;
Multiple satellite coverage to avoid terrain blockage in severe conditions;
Increased availability of the SAR space segment;
New return-link service from RCC to the distress-emitting beacon;
Forward link via stand-alone payload (with SAR-dedicated up/downlink
antenna);
Return link integrated into navigation messages on L1 (up to six messages per
minute), uplinked by the GALILEO Ground Segment.
Figure 10.16 depicts the defined architecture and the sequence of steps from dis-
tress message emission by the emergency beacon up to transmission of acknowledg-
ment from the RCC.
10.7
GALILEO Development Plan
The GALILEO development has been structured according to the following phases:
Overall development and validation phase (phases C/D/E1);
9
2
Transponded SAR signal (1,544 MHz)
Return link message
in L1
1
Return message
8
3 MEOLUT
SAR signal (406 MHz)
GALILEO
core
system
Beacon location
Emergency
beacon
via return link
service provider
7
Return message
Rescue operation
6
5
Beacon location
4
Mission control center
(SAR MCC)
Rescue coordination center
Figure 10.16
GALILEO SAR architecture.
 
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