Glossary entry (derived from question below)
English term or phrase:
electronic navigational shadow sectors
French translation:
secteurs masqués des appareils électroniques de navigation
Added to glossary by
philippe vandevivere
Jul 26, 2014 12:24
10 yrs ago
English term
France
PhD Biotech & process engineer
Native in: French 
Works in: Dutch to French, English to French, Spanish to French, and 3 more.
electronic navigational shadow sectors
English to French
Tech/Engineering
Ships, Sailing, Maritime
radar
Il s'agit d'une procédure d'utilisation du positionnement dynamique sur navires ravitailleurs de plateformes pétrolières :
Suggested factors for consideration when performing a Risk Assessment:
• ...
• Relative size of DP VESSEL and the offshore installation;
• Nature of the supply operation;
• ...
• Proximity of other obstructions in the immediate area;
• Possibility of electronic navigational shadow sectors when close to installations;
Suggested factors for consideration when performing a Risk Assessment:
• ...
• Relative size of DP VESSEL and the offshore installation;
• Nature of the supply operation;
• ...
• Proximity of other obstructions in the immediate area;
• Possibility of electronic navigational shadow sectors when close to installations;
Proposed translations
(French)
Proposed translations
-1
3 hrs
Antoine Dequidt
France
France
Native in French
Specializes in field
France
ACSERV SAS - Les Ingénieurs du Verbe®
Native in: French
Works in: English to French, Spanish to French
Related KudoZ points
:
86
Selected
secteurs masqués des appareils électroniques de navigation
Par exemple le secteur de balayage de l’antenne radar masqué par une obstruction.
http://www.seasources.net/Radar_Terms.htm :
Shadow sector : A sector on the radarscope in which the appearance of radar echoes is improbable because of an obstruction near the antenna. While both blind and shadow sectors have the same basic cause, bind sectors generally occur at the larger angles subtended the obstruction.
https://mcanet.mcga.gov.uk/public/c4/regulations/safetyofnav... RADARS
(See also SOLAS V/19.2.3.2 and 2.7.1)
8.1) Siting of the antenna unit
8.1.1) Siting of a radar antenna needs careful consideration so that a suitable compromise is reached which takes into consideration the effect of height on range performance and sea clutter, physical integrity and the need to minimise shadow sectors and false echoes through reflection.
http://www.seasources.net/Radar_Terms.htm :
Shadow sector : A sector on the radarscope in which the appearance of radar echoes is improbable because of an obstruction near the antenna. While both blind and shadow sectors have the same basic cause, bind sectors generally occur at the larger angles subtended the obstruction.
https://mcanet.mcga.gov.uk/public/c4/regulations/safetyofnav... RADARS
(See also SOLAS V/19.2.3.2 and 2.7.1)
8.1) Siting of the antenna unit
8.1.1) Siting of a radar antenna needs careful consideration so that a suitable compromise is reached which takes into consideration the effect of height on range performance and sea clutter, physical integrity and the need to minimise shadow sectors and false echoes through reflection.
4 KudoZ points awarded for this answer.
Comment: "merci !"
-1
50 mins
Pierre POUSSIN
France
France
Native in French
Works in field
France
Fast and accurate.
Native in: French (Variant: Standard-France) 
Works in: English to French, French to English, Latin to French, and 2 more.
Related KudoZ points
:
40
zones non couvertes par le GPS
Comme pour la couverture en téléphonie...
Peer comment(s):
| disagree |
Daryo
: BEFORE GPS was even at the stage of a crazy sounding new idea there was a number of navigational systems (like radars ...) many still in use.
4 hrs
|
17 mins
zones à l'ombre de ...
Je suppose qu'on parle de zones où il est difficile ou impossible de capter un signal de positionnement?
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Note added at 2 hrs (2014-07-26 14:43:30 GMT)
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'hors' étant synonyme de 'à l'ombre', mais moins nuancé
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Note added at 2 hrs (2014-07-26 14:43:30 GMT)
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'hors' étant synonyme de 'à l'ombre', mais moins nuancé
Peer comment(s):
| disagree |
Antoine Dequidt
: S’il s’agissait de zones le terme en anglais serait "areas". Le texte source fait mention de la proximité d’installations : "close to installations"
3 hrs
|
| agree |
Daryo
: that's the basic idea
5 hrs
|
5 hrs
zones d'ombre par rapport aux systèmes électroniques de navigation
Possibility of electronic navigational shadow sectors when close to installations;
=>
here it's a negative/unwanted possibility i.e. a risk
=
risque [pour le navire] de se retrouver dans une zone d'ombre par rapport aux systèmes électroniques de navigation
this is most likely about radio beacons used in maritime navigation - when a ship gets close to a huge metal structure like an oil rig, it can find itself in the shadow of a beam emitted by a radio beacon (i.e. in a zone where the signal is obstructed by the oil rig).
This would renders this navigational system useless, as at least two signals from two radio beacons are needed to get a positional fix by triangulation; if the ship is the "shadow" of one radio beacon, the other one on its own is useless.
"Radio beacons
A radio beacon is a transmitter at a known location, which transmits a continuous or periodic radio signal with limited information content (for example its identification or location), on a specified radio frequency. Occasionally the beacon function is combined with some other transmission, like telemetry data or meteorological information.
Radio beacons have many applications, including air and sea navigation, propagation research, robotic mapping, radio frequency identification (radio-frequency identification, RFID) and indoor guidance as with real time locating systems (RTLS) like Syledis."
[http://en.wikipedia.org/wiki/Electric_beacon]
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Note added at 6 hrs (2014-07-26 18:27:13 GMT)
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http://www.epandi.com/ukpandi/infopool.nsf/html/LPBulletin61...
=>
here it's a negative/unwanted possibility i.e. a risk
=
risque [pour le navire] de se retrouver dans une zone d'ombre par rapport aux systèmes électroniques de navigation
this is most likely about radio beacons used in maritime navigation - when a ship gets close to a huge metal structure like an oil rig, it can find itself in the shadow of a beam emitted by a radio beacon (i.e. in a zone where the signal is obstructed by the oil rig).
This would renders this navigational system useless, as at least two signals from two radio beacons are needed to get a positional fix by triangulation; if the ship is the "shadow" of one radio beacon, the other one on its own is useless.
"Radio beacons
A radio beacon is a transmitter at a known location, which transmits a continuous or periodic radio signal with limited information content (for example its identification or location), on a specified radio frequency. Occasionally the beacon function is combined with some other transmission, like telemetry data or meteorological information.
Radio beacons have many applications, including air and sea navigation, propagation research, robotic mapping, radio frequency identification (radio-frequency identification, RFID) and indoor guidance as with real time locating systems (RTLS) like Syledis."
[http://en.wikipedia.org/wiki/Electric_beacon]
--------------------------------------------------
Note added at 6 hrs (2014-07-26 18:27:13 GMT)
--------------------------------------------------
http://www.epandi.com/ukpandi/infopool.nsf/html/LPBulletin61...
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