SAR Flashcards
USMCC
United States Mission Control Center
RCC
Rescue Coordination Center
LOE
Low Earth Orbiting
EPIRB Categories of 406 MHz
CAT I: Auto CATII: Manual
EPIRB Carriage Requirements
Vessels over 300 Gross Tons
Emergency Locator Transmitter (ELT) (Homing)
Designed to emit a freq other aircraft could hear which would aid in locating the distressed aircraft
CAD (Civilian): 121.5 MAD (Military): 243 MHz
High Flier Report
- Commercial A/C hear 121.5 (but it is analog so it doesn’t transmit data)
- Obtain position and altitude when fist heard and lost the signal
- Plot range ring just like RFF
- See and plot multiple Hi Flyer Reports
- Search Area of Overlap
Polar Orbiting Satellites (LEOSAR)
SARSAT Satellites:
406 MHz Repeater
406 MHz Processer
- Utilizes Doppler shift to determine position
- Position Accuracy: 3 NM (Doppler)
- Provide two positions “A” and “B” - provides %
- “E” solution - initial GPS position may be off (should be close).
chance of position based on Doppler processing.
COSPAS-SARSAT website
https://www.cospas-sarsat.int/en/
Geostationary Satellites
No Doppler processing Immediate alerts 406 MHz "E" solution Will provide registration information
BEACON ALERT Actions
Table 3-4 pg. 3-34 in Addendum
Notification of Ambiguity Resolution
- Composite position is the average position of multiple positions (works if objects aren’t moving) - top position on report.
- Elemental Positions: keeps moving
Commercial Satellite Distress Alerting Devices
Not part of GMDSS Individual Use Web-based tracking of alert Notification to CG via Call Center Must be evaluated/responded to IAW normal SAR case evaluation
Mid Earth Orbiting (MEO) - online and tested
Provides position and position error. - happens more regularly. Policy: per CG SAR, no changes to policy at this point. No policy on MEOs
Geostationary Satellites are fixed at the…?
Equator
