Standarden hedder i øvrigt ITU-R M.493
/Bjarke
"Bjarke Christensen" <BjarkeMC@(IngenSpam)grevestrand.dk> wrote in message
news:cunv9t$jld$1@news.cybercity.dk...
> Yes, GMDSS understøttes af en ITU-R standard.
>
> Klip fra denne viser GMDSS Distress Alert formatet, som jeg har angivet
> nedenfor. Jeg formoder dit svar ligger 8.1.2.2 og 3.
>
> (Bemærk at klippet er fra en draft, men der er ingen ændringer på dette
> punkt)
>
> /Bjarke
>
> 8 Messages
> The messages that are included in a call sequence contain the following
> message elements, which are listed in the order in which they would appear
> in each message:
>
> 8.1 For a "distress" call (see Table 4 and Fig. 4a)) the distress
> information is contained in four messages in the following order:
>
> 8.1.1 Message 1 is the "nature of distress" message, coded as shown in
> Table 310, i.e.:
>
> 8.1.1.1 fire, explosion;
>
> 8.1.1.2 flooding;
>
> 8.1.1.3 collision;
>
> 8.1.1.4 grounding;
>
> 8.1.1.5 listing, in danger of capsizing;
>
> 8.1.1.6 sinking;
>
> 8.1.1.7 disabled and adrift;
>
> 8.1.1.8 undesignated distress;
>
> 8.1.1.9 abandoning ship;
>
> 8.1.1.10 piracy/armed robbery attack;
>
> 8.1.1.11 man over board;
>
> 8.1.1.12 emergency position-indicating radiobeacon (EPIRB) emission.
>
> 8.1.2 Message 2 is the "distress coordinates" message, consisting of
> ten digits indicating the location of the vessel in distress, coded on the
> principles described in Table 2, in pairs starting from the first and
> second digits (see NOTE 1 to § 5.3):
>
> 8.1.2.1 The first digit indicates the quadrant in which the incident has
> occurred, as follows:
>
> 8.1.2.1.1 quadrant NE is indicated by the digit "0",
>
> 8.1.2.1.2 quadrant NW is indicated by the digit "1",
>
> 8.1.2.1.3 quadrant SE is indicated by the digit "2",
>
> 8.1.2.1.4 quadrant SW is indicated by the digit "3".
>
> 8.1.2.2 The next four figures indicate the latitude in degrees and
> minutes.
>
> 8.1.2.3 The next five figures indicate the longitude in degrees and
> minutes.
>
> 8.1.2.4 If "distress coordinates" cannot be included, or if the position
> information has not been updated for 23½ hours, the 10 digits following
> the "nature of distress" should be automatically transmitted as the digit
> 9 repeated 10 times.
>
> 8.1.2.5 DSC equipment should be provided with facilities for automatic
> position updating in accordance with NMEA 0183 (or IEC-1162) for input of
> data from a navigation equipment.
>
>
>
> 8.1.3 Message 3 is the time indication (UTC) when the coordinates were
> valid consisting of four digits coded on the principles described in Table
> 2, in pairs starting from the first and second digits.
>
> 8.1.3.1 The first two digits indicate the time in hours.
>
> 8.1.3.2 The third and fourth digits indicate the part of the hours in
> minutes.
>
> 8.1.3.3 If the time cannot be included the four time indicating digits
> should be transmitted automatically as "8 8 8 8".
>
> 8.1.4 Message 4 is a single character to indicate the type of
> communication (telephone or teleprinter) which is preferred by the station
> in distress for subsequent exchange of distress traffic (RR No. 3143).
> This character is coded as shown in Table 11Table 3 first telecommand.
>
>
>
> "Børge Wedel Müller" <boerge@myller_fjern.dk> wrote in message
> news:420f7544$0$22693$d40e179e@nntp04.dk.telia.net...
>> Bjarkes links har lige givet mig anledning til nogle tanker.
>>
>> Det ser dels ud til at NMEA ikke er NMEA (ellers ville det ikke kunne
>> komme på tale at diskutere om Garmin duer - eller ikke duer)
>>
>> Noget andet er om den pågældende "tråd" vedr antallet af decimaller
>> forhåbentligt kun gælder displayed, og ikke den afsendte nødmelding.
>> ("tråden" går ud på at Neptune ikke viser decimaler), men forhåbentligt
>> sender den vel nødmelding med 3-4 decimaler.
>>
>> DSC og GMDSS er jo (tror jeg) en standard, jeg har ikke kundet finde om
>> f.eks. antallet af decimaler i en position er forudbestemt.
>>
>> Gælder det også EPIRB ?
>>
>> Jeg er "blevet nervøs" for det elektroniske......
>>
>>
http://www.netbaad.com/product.asp?product=1497&page=1
>>
>>
http://www.highcom.dk/shop/productlist.asp?Id=1157
>>
>>
>>
http://www.iccom.dk/Marine%20VHF-data.HTM
>>
>>
>> mvh
>>
>> /Børge
>>
>>
>
>