Jotron Electronics A/S TRON40GPS Manuel D’Utilisation
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1 . 4 D I S T R E S S L O C A T I O N D E T E R M I N A T I O N
The location of the distress signal is determined by taking measurements of the
doppler shift of the EPIRB frequency when the satellite first approach and then
pass the EPIRB. The actual frequency is heard at the time of closest approach
(TCA). Knowing the position of the satellite and using the received doppler
signal information, it is possible to determine the location of the Tron 40GPS
from the satellite at the TCA.At the LUT, actually two positions are calculated.
One is the actual position (A) and the other is the mirror image (B) position.A
second satellite pass confirms the correct location (A).With the 406 system the
real solution can be determined on the first pass with a reliability of nearly 90%
and down to an accuracy of less than 5 km (3.1 miles).
doppler shift of the EPIRB frequency when the satellite first approach and then
pass the EPIRB. The actual frequency is heard at the time of closest approach
(TCA). Knowing the position of the satellite and using the received doppler
signal information, it is possible to determine the location of the Tron 40GPS
from the satellite at the TCA.At the LUT, actually two positions are calculated.
One is the actual position (A) and the other is the mirror image (B) position.A
second satellite pass confirms the correct location (A).With the 406 system the
real solution can be determined on the first pass with a reliability of nearly 90%
and down to an accuracy of less than 5 km (3.1 miles).
1 . 5
A D D E D V A L U E I N T R O N 4 0 G P S
The Tron 40GPS has been designed to operate with the COSPAS-SARSAT
system and will enhance further the lifesaving capabilities of conventional
beacons.The integrated 12 channel GPS module accept continuous positional
information from the standard GPS system using 27 satellites providing an accu-
racy of approximately 100m. Upon activation of the Tron 40GPS in an emergency
situation the positional information is incorporated into the distress message
transmitted to LUT.The main advantage with integrated GPS in Tron 40GPS is
the rapid response and positional accuracy providing vital information during a
rescue operation practically eliminating valuable time spent searching for the
distressed.Whenever a distress message transmitted by Tron 40GPS is detected
by a polar orbit satellite (LEOSAR) the delayed alert remains the same as for
non-GPS integrated EPIRBS (max. 90 min.), but the position accuracy is improved
considerably from a radius of 5 km. to amazing 100m.Whenever a distress
message transmitted by Tron 40GPS is detected by geostationary satellite
(GEOSTAR) the alert is immediate (max. 5 min.), still providing the accurate posi-
tion of 100m. Please note that the positional accuracy delay is depending on the
actual protocol used and programmed into the EPIRB and the location of the
emergency.The information is based on the capacity of the LEOSAR/GEOSAR
COSPAS-SARSAT system.
system and will enhance further the lifesaving capabilities of conventional
beacons.The integrated 12 channel GPS module accept continuous positional
information from the standard GPS system using 27 satellites providing an accu-
racy of approximately 100m. Upon activation of the Tron 40GPS in an emergency
situation the positional information is incorporated into the distress message
transmitted to LUT.The main advantage with integrated GPS in Tron 40GPS is
the rapid response and positional accuracy providing vital information during a
rescue operation practically eliminating valuable time spent searching for the
distressed.Whenever a distress message transmitted by Tron 40GPS is detected
by a polar orbit satellite (LEOSAR) the delayed alert remains the same as for
non-GPS integrated EPIRBS (max. 90 min.), but the position accuracy is improved
considerably from a radius of 5 km. to amazing 100m.Whenever a distress
message transmitted by Tron 40GPS is detected by geostationary satellite
(GEOSTAR) the alert is immediate (max. 5 min.), still providing the accurate posi-
tion of 100m. Please note that the positional accuracy delay is depending on the
actual protocol used and programmed into the EPIRB and the location of the
emergency.The information is based on the capacity of the LEOSAR/GEOSAR
COSPAS-SARSAT system.
1 . 6 E P I R B R E G I S T R A T I O N
Normally the MCC will contact the vessel or the contact person registered in a
shipping register and/or an EPIRB register (Ships owner, family member etc.)
before alerting the RCC.This is to determine if the alarm from the EPIRB for
some reason is a false alarm, and an expensive rescue operation can be avoided.
Because of this it is important that the ships data is correct in the shipping
register or in the EPIRB database.
shipping register and/or an EPIRB register (Ships owner, family member etc.)
before alerting the RCC.This is to determine if the alarm from the EPIRB for
some reason is a false alarm, and an expensive rescue operation can be avoided.
Because of this it is important that the ships data is correct in the shipping
register or in the EPIRB database.
Tron 40GPS purchased in some countries will have a registration form attached
to it, it is important that this registration form is completed by the owner and
returned to the place the EPIRB was purchased or to the address specified on
the registration form.
to it, it is important that this registration form is completed by the owner and
returned to the place the EPIRB was purchased or to the address specified on
the registration form.