Re: ARLA/CLUSTER: Re: [CT-Com. & Tec.] Tecnologia que remonta à II Guerra Mundial volta a ser usada para apoiar os sistemas de GPS

[Rui Carvalho]

KISS = Keep It Simple, Stupid :D


*73 de Rui Carvalho - CT1HAR -*


*<<<<>>>> IN51OJ <http://www.k7fry.com/grid/?qth=IN51OJ72RQ>
<<<<>>>>http://www.qrz.com/db/CT1HAR <http://www.qrz.com/db/CT1HAR>*

2014-11-04 21:19 GMT+00:00 Luís Garcia Filipe <afterhours36  gmail.com>:

> Boa noite.
>
> Fiquei curioso quanto ao sistema que fala, o KISS.
>
> Já procurei na net mas não encontrei...pode dar uma ajuda?
>
> E sim realmente, os novos sistemas, têm falta de uma ou duas redundâncias
> que sejam independentes de GPS ou Internet, um autentico calcanhar de
> Aquiles.
>
> Pode ajudar Carlos?
>
> 73,
>
>
> CS7AEL
>
> 2014-11-04 13:52 GMT+00:00 Carlos Mourato <radiofarol  gmail.com>:
>
>> Ora aqui está uma decisão inteligente. Os sistemas mais antigos, podem
>> ser hoje considerados como "arcaicos" pelos mais jovens, que nem sequer
>> entendem como funcionavam. No entanto, como eram sistemas bastante mais
>> simples e principalmente independentes, a sua fiabilidade era de longe
>> superior aos sistemas actuais. Podiam não ter um precisão de 2m, mas os
>> 100m na melhor das hipoteses, eram mais que suficientes. Eu continuo a ser
>> adepto do "KISS" Antigamente havia uma rede de VHF analógico para
>> bombeiros, serviços florestais, ...Uma rede de ondas curtas para PSP, GNR
>> etc, e tudo funcionava bem. Hoje existe um manancial de sistemas, que estão
>> sempre com problemas começando pelo célebre SIRESP. Enquanto os decisores
>> não se voltarem mais para sistemas "KISS" não se adianta muito, a não ser
>> na área das negociatas.
>>
>>
>>
>> *Cumprimentos:  Carlos Mourato - Sines - Portugal*
>>
>> *Best regards from:  Carlos Mourato - Sines - Portugal*
>>
>> *Visite o meu canal Youtube em:*
>> http://www.youtube.com/user/CT4RK?feature=guide
>>
>> *Visit my youtube channel at:*
>> http://www.youtube.com/user/CT4RK?feature=guide
>>
>>
>>
>>
>> 2014-11-04 13:43 GMT+00:00 João Costa > CT1FBF <ct1fbf  gmail.com>:
>>
>>> GPS back-up: World War Two technology employed
>>>
>>> Technology developed during World War Two is to be used as a back-up for
>>> GPS.
>>>
>>> The General Lighthouse Authorities (GLA) have announced that they have
>>> installed a system called eLoran in seven ports across Britain.
>>>
>>> The GLA say many critical instruments on ships use Global Navigation
>>> Satellite Systems, and if they fail the consequences could be
>>> disastrous.
>>>
>>> The new system, which is ground rather than satellite-based, is
>>> designed to be used in the event of a GPS failure.
>>>
>>> "All vessels that sail today are massively dependent on GPS, " Martin
>>> Bransby, research and radio navigation manager for the General
>>> Lighthouse Authorities of the UK and Ireland, told the BBC's
>>> technology programme Click.
>>>
>>> "It is their primary means of navigation - and a massive number of
>>> instruments rely on it too.
>>>
>>> "If you don't have it, you are dead in the water."
>>>
>>> Testing for eLoran has taken place in Felixstowe, the busiest
>>> container port in the UK.
>>>
>>> Each year, three million containers are brought in on some of the
>>> biggest ships in the world.
>>>
>>> Safely manoeuvring these vessels in this packed waterway is vital, and
>>> currently the only way to do this is with the help of GPS.
>>>
>>> Onboard the Galatea, a ship that is 80m (260ft) long, the GLA have
>>> been finding out what happens if the satellite system goes wrong.
>>>
>>> Martin Bransby demonstrates a GPS failure by pulling the plug on the
>>> ship's receiver.
>>>
>>> Within a few seconds, alarms start to sound on the bridge as one by
>>> one the instruments stop working.
>>>
>>> "This is the gyrocompass - it steers the ship - you can see it
>>> starting to fail," says Mr Bransby.
>>>
>>> "If we walk over here, this is the radar, and that's not working
>>> either. This is the dynamic positioning: it holds the ship's position,
>>> that's not working.
>>>
>>> "The electronic chart display becomes unusable. Even the ship's clock
>>> stops working."
>>>
>>> In a series of tests, the GLA have found that almost every bit of kit
>>> on the boat uses GPS - even the onboard satellite entertainment
>>> system.
>>>
>>> Mr Bransby says: "You can imagine standing watch on this ship, it's
>>> the middle of the night, it's dark, it's foggy, you are in the English
>>> Channel, and then this happens.
>>>
>>> "What do you do? You're in a right mess, basically."
>>>
>>> Read the full BBC News story at:
>>> http://www.bbc.co.uk/news/science-environment-29758872
>>>
>>> --
>>> --
>>> Para mais informações/opções visite o site, e edite a sua conta:
>>>
>>> http://groups.google.com/group/ct-comunicacoes-e-tecnologias?hl=en?hl=pt-PT
>>>
>>> ---
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>>>
>>
>>
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>
>
> --
> Cumprimentos;
>
> Luís Filipe Garcia S.
>
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