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ELT（DT）警报的处理
Module 10 Processing of an ELT(DT) Alert
AUTONOMOUS DISTRESS TRACKING (ADT)The ADT function is designed to identify the location of an aircraft in distress within a 6 NM radius of the accident site. The accuracy of position information shall, as a minimum, meet the position accuracy requirements established for Emergency Locator Transmitters (ELTs).
There are two high-level functional objectives for an ADT system. These are :
a) Receive timely notice of an airplane in a distress condition to facilitate timely SAR operations; and
b) Locate an accident site with high probability after a crash based on last known position of the aircraft.
ELT(DT) Activation triggersActivated when the plane is still flying via 4 main automatic triggers (manual activation available)
– (1) Unusual attitude - The conditions may include, but are not limited to, excessive values of roll, pitch and yaw and their corresponding rates of change.
– (2) Unusual speed - The conditions may include, but are not limited to, excessive vertical speed, stall condition, low airspeed, overspeed or other speed conditions.
– (3) Collision with terrain - The conditions may include, but are not limited to, high rate of closure to terrain or inappropriate altitude for the current position.
– (4) Total loss of thrust/propulsion on all engines - The parametric data used to define this condition may be engine performance parameters or other parameters that result from loss of thrust.
Expected to be very rapidly unfolding events – original crash studies showed average event timeline – 6 minutes from activation to crash.
ELT(DT) alert transmission scheduleELT(DT) transmissions primarily provide encoded (GNSS) locations –position data provided from onboard navigation system to beacon.
– Time of Encoded position update for Second Generation Beacons (SGB) provided with 1 second resolution
– Time of Encoded position update provided for First Generation Beacons (FGB)s as either “0 - 2 SECONDS”, “2 - 60 SECONDS”, or “1 MINUTE TO 4 HOURS”
– Locations computed by a Mid Earth Orbiting (MEO) Ground Stations will be used only if the MEO Ground Station is commissioned to provide locations for fast moving beacons
• Burst Transmission Specification (C/S T.001/C/S T.018)
– Every 5 seconds the first 2 minutes (24 messages)
– Every 10 seconds 2-5 minutes (18 Messages)
• 42 messages in first 5 minutes
– Every 30 seconds after 5 minutes
• Updated Alert Distribution Specification resulting from JC-35 discussions
– Distribution of ELT(DT) alert data to SAR Points of Contacts (SPOC)/Rescue Coordination Centers (RCC) for each received burst will be limited to the first 30 seconds (up to 6 bursts) after beacon activation
– With an alert distributed to SPOCs/RCCs every 10 minutes thereafter. (Reduction from 42 initial messages to 6
messages, and the best new alert distributed every 10 minutes rather than the last alert every 10 minutes)
• Message distribution to the Location of an Aircraft in Distress Repository (LADR)
– At least one message for each received burst will be uploaded to the LADR
ELT(DT) FGB SIT 185 Example1. DISTRESS TRACKING COSPAS-SARSAT DOA POSITION CONFLICT ALERT
2. MSG NO 21013 CMCC REF 1D1200F03BBFDFF
3. DETECTED AT 04 AUG 20 1015 UTC BY MEOSAR
4. DETECTION FREQUENCY 406.0400 MHZ
5. COUNTRY OF BEACON REGISTRATION 232 / G BRITAIN
6. USER CLASS ELT DISTRESS TRACKING
AIRCRAFT 24 BIT ADDRESS 01E077
AIRCRAFT OPERATOR DESIGNATOR (3LD): MMB
7. EMERGENCY CODE NIL
8. POSITIONS
DOA - 02 00.1 N 046 06.2 E
ENCODED - 01 54.40 N 045 37.53 E
9. ENCODED POSITION PROVIDED BY EXTERNAL DEVICE
10. NEXT PASS/EXPECTED DATA TIMES NIL
11. HEX ID 1D1200F03BBFDFF
12. ACTIVATION TYPE MANUAL
13. BEACON NUMBER ON AIRCRAFT OR VESSEL NIL
14. OTHER ENCODED INFORMATION
ENCODED POSITION UNCERTAINTY PLUS-MINUS 2 SECONDS OF
LATITUDE AND LONGITUDE
ALTITUDE OF ENCODED LOCATION: BETWEEN 1600 AND 2200 METRES
(BETWEEN 5200 AND 7200 FEET)
AIRCRAFT 24-BIT ADDRESS ASSIGNED TO G BRITAIN
15. OPERATIONAL INFORMATION
MEOSAR ALERT LAST DETECTED AT 03 MAY 19 0853 UTC
POSITION CONFLICT BASED ON DISTANCE SEPARATION OF AT LEAST 20 KM
ELT(DT) POSITION DOES NOT REFERENCE ANY PREVIOUS POSITION
16. REMARKS
THIS DISTRESS TRACKING MESSAGE IS BEING SENT TO APPROPRIATE
SAR AUTHORITIES
PROCESS THIS ALERT ACCORDING TO RELEVANT REQUIREMENTS
END OF MESSAGE国内正规的配资公司
ELT (DT) SGB SIT -185 Example1. DISTRESS TRACKING COSPAS-SARSAT DOA POSITION MATCH ALERT
2. MSG NO 00192 AUMCC REF B27400F81FD4710
3. DETECTED AT 03 MAY 19 085310 UTC BY MEOSAR
4. DETECTION FREQUENCY 406.0500 MHZ
5. COUNTRY OF BEACON REGISTRATION 403 / SAUDI
6. USER CLASS SGB – ELT DISTRESS TRACKING
AIRCRAFT 24 BIT ADDRESS 7100CE
TAC 62 SERIAL NO 509
7. EMERGENCY CODE NIL
8. POSITIONS
CONFIRMED - NIL
DOPPLER A - NIL
DOPPLER B – NIL
DOA - 02 25.1 N 046 06.2 E
ENCODED - 02 24.40 N 046 04.11 E
9. ENCODED POSITION PROVIDED BY EXTERNAL DEVICE
10. NEXT PASS/EXPECTED DATA TIMES
CONFIRMED - NIL
DOPPLER A - NIL
DOPPLER B – NIL
DOA - NIL
ENCODED - NIL
11. HEX ID B27400F81FD4 7100CE00000 HOMING SIGNAL NIL
12. ACTIVATION TYPE AUTOMATIC BY BEACON (G-SWITCH/PROBABLE CRASH)
13. BEACON NUMBER ON AIRCRAFT OR VESSEL NIL
14. OTHER ENCODED INFORMATION
ENCODED POSITION UNCERTAINTY PLUS-MINUS 1.7 METRES
TIME OF ENCODED POSITION UPDATE: 03 MAY 19 085308 UTC
TIME SINCE ENCODED LOCATION GENERATED: 0 MINUTES
ALTITUDE OF ENCODED LOCATION: 125 METRES (410 FEET)
ELAPSED TIME SINCE ACTIVATION: 0 HOURS
REMAINING BATTERY CAPACITY BETWEEN 75 AND 100 PERCENT
AIRCRAFT 24-BIT ADDRESS ASSIGNED TO SAUDI
15. OPERATIONAL INFORMATION
MEOSAR ALERT LAST DETECTED AT 03 MAY 19 085310 UTC
ELT(DT) POSITION DOES NOT REFERENCE ANY PREVIOUS POSITION
BEACON CHARACTERISTICS PER TAC DATABASE PROVIDED IN A SEPARATE MESSAGE
16. REMARKS
THIS DISTRESS TRACKING MESSAGE IS BEING SENT TO APPROPRIATE SAR AUTHORITIES.
PROCESS THIS ALERT ACCORDING TO RELEVANT REQUIREMENTS
END OF MESSAGE
mayalertforfromcrash发布于：北京市声明：该文观点仅代表作者本人，搜狐号系信息发布平台，搜狐仅提供信息存储空间服务。