Wednesday, February 10, 2010

Feb. 10 - Stronger radiation from the Sun 'will cause sat-navs to fail', scientists warn‏

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Now we're getting closer to things we should be concerned about....Paste the link if you can't access the links/don't receive the image

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Stronger radiation from the Sun 'will cause sat-navs to fail', scientists warn

Britain’s satellite navigation networks could soon experience problems and disruptions caused by higher levels of radiation coming from the Sun, scientists warn.

By Andrew Hough
Published: 1:00PM GMT 10 Feb 2010

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Sat nav gadget in a car: Stronger radiation from the Sun will cause 'sat-navs to fail', scientists warn
Experts say solar flares interfere with signals from satellites orbiting the earth, causing receivers to lose track of their position. Photo: BLOOMBERG

Researchers said satnav devices were facing the threat from an expected increase in solar flares from the Sun that could cause unpredictable errors in navigation.

Experts said the bursts of radiation caused by the flares interfere with signals from satellites orbiting the earth, causing receivers to fail and lose track of their position.

Now British scientists say the Sun is on its way to another “solar maximum”, which will cause the stronger levels of radiation to hit the earth.

It is feared this will cause satnav receivers to be blinded for minutes at a time and could result in drivers becoming lost or involved in accidents.

It could also cause problems to emergency services, high-precision surveying, shipping and even military operations, they added.

Prof Cathryn Mitchell, from the University of Bath, said while the sun’s affects on navigation were difficult to project, the errors could last hours or even days.

“It varies quite a lot across the Earth; looking at the UK it will be about 10-metre errors in the positioning,” Prof Mitchell told the BBC.

"Ten metres out is probably going to be OK for a satnav system in a car but if you're using the system for something safety-critical like ships coming into harbour for navigation or possibly in the future landing aircraft, you're looking for much greater accuracy and more importantly, much greater reliability."

Bob Cockshott, a director of the government-funded Digital Systems Knowledge Transfer Network, said the problem would be more “troublesome than dangerous”.

"You might find for a number of hours or even a day or two you couldn't go out surveying or be able to dock your oil tanker at the deep-ocean oil well," he said.

"It's more at the annoyance level than something that's going to bankrupt your business."

The news could explain why systems unexpectedly lose the signal when they had perfect reception only moments before.

There have been several recent examples of satnav blunders where drivers, blindly following their systems have caused accidents by taking a wrong turning or attempting to programme the device while driving.

Researchers have previously said the solar burst could be strong enough to affect civil aviation navigation systems but to a lesser degree than the GPS network, which uses a different satellite system.

A study in 2008 found the natural light shows of the Northern Lights – or Aurora Borealis – interfere with the signals from global positioning satellites, which are used by Sat-Navs to pinpoint the locations of vehicles, boats and aircraft.

A recent survey found young drivers were increasingly abandoning maps and were instead relying almost entirely on satnav to get to their destination.

Figures show that last year satellite navigation systems were blamed for causing around 300,000 people to crash in Britain.

A further 1.5 million admitted performing sudden direction changes because they were following the devices' directions.

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How to Digitally Record/Video a UFO sighting:

Como registar digitalmente ou gravar um vídeo de um avistamento de um UFO:

Stabilize the camera on a tripod. If there is no tripod, then set it on top of a stable, flat surface. If that is not possible lean against a wall to stabilize your body and prevent the camera from filming in a shaky, unsteady manner.

Estabilize a camera com um tripé. Se não tiver um tripé, então coloque-a em cima de uma superfície estável. Se não for possível, então encoste-se a uma parede para estabilizar o corpo e evitar que a camera registe de maneira tremida e instável.

Provide visual reference points for comparison. This includes the horizon, treetops, lampposts, houses, and geographical landmarks (i.e., Horsetooth Reservoir, Mt. Adams, etc.) Provide this in the video whenever is appropriate and doesn’t detract from what your focus is, the UFO.

Forneça pontos visuais de referência para comparação. Isso inclui o horizonte, cimo das árvores, postes de iluminação, pontos de referência geográficos (como o Reservatório de Horsetooth, Mone Adams, etc) Forneça esses pontos no vídeo sempre que for apropriado e não se distraia do que é o seu foco, o UFO/a Nave.

Narrate your videotape. Provide details of the date, time, location, and direction (N,S,E,W) you are looking in. Provide your observations on the weather, including approximate temperature, windspeed, any visible cloud cover or noticeable weather anomalies or events. Narrate on the shape, size, color, movements, approximate altitude of the UFO, etc and what it appears to be doing. Also include any unusual physical, psychological or emotional sensations you might have. Narrate any visual reference points on camera so they correlate with what the viewer will see, and thereby will be better able to understand.

Faça a narração do vídeo. Forneça pormenores sobre a data, hora, local e direcção (Norte, Sul, Este, Oeste) que está a observar. Faça observações sobre as condições atmosféricas, incluindo a temperatura aproximada, velocidade do vento, quantidade de nuvens, anomalias ou acontecimentos meteorológicos evidentes. Descreva a forma, o tamanho, a cor, os movimentos, a altitude aproximada onde se encontra o UFO/nave, etc e o que aparenta estar a fazer. Inclua também quaisquer aspectos pouco habituais de sensações físicas, psicológicas ou emocionais que possa ter. Faça a narração de todos os pontos de referência visual que o espectador irá ver e que, deste modo, será capaz de compreender melhor.

Be persistent and consistent. Return to the scene to videotape and record at this same location. If you have been successful once, the UFO sightings may be occurring in this region regularly, perhaps for specific reasons unknown, and you may be successful again. You may also wish to return to the same location at a different time of day (daylight hours) for better orientation and reference. Film just a minute or two under “normal” circumstances for comparison. Write down what you remember immediately after. As soon as you are done recording the experience/event, immediately write down your impressions, memories, thoughts, emotions, etc. so it is on the record in writing. If there were other witnesses, have them independently record their own impressions, thoughts, etc. Include in this exercise any drawings, sketches, or diagrams. Make sure you date and sign your documentation.

Seja persistente e não contraditório. Volte ao local da cena e registe o mesmo local. Se foi bem sucedido uma vez, pode ser que nessa região ocorram avistamentos de UFOs/naves com regularidade, talvez por razões específicas desconhecidas, e talvez possa ser novamente bem sucedido. Pode também desejar voltar ao mesmo lugar a horas diferentes do dia (durante as horas de luz)para ter uma orientação e referência melhor. Filme apenas um ,inuto ou dois em circunstâncias “normais” para ter um termo de comparação. Escreva tudo o que viu imediatamente após o acontecimento. Logo após ter feito o registo da experiência/acontecimento, escreva imediatamente as impressões, memórias, pensamentos, emoções, etc para que fiquem registadas por escrito. Se houver outras testemunhas, peça-lhes para registar independentemente as suas próprias impressões, pensamentos, etc. Inclua quaisquer desenhos, esbolos, diagramas. Certifique-se que data e assina o seu documento/testemunho.

Always be prepared. Have a digital camera or better yet a video camera with you, charged and ready to go, at all times. Make sure you know how to use your camera (and your cell phone video/photo camera) quickly and properly. These events can occur suddenly, unexpectedly, and often quite randomly, so you will need to be prepared.

Esteja sempre preparado, Tenha sempre uma camera digital, melhor ainda, uma camera vídeo consigo, carregada e pronta a usar sempre que necessário. Certifique-se que sabe como lidar com a sua camera (ou com o seu celular/camera fotográfica) rápida e adequadamente. Esses acontecimentos podem acontecer súbita e inesperadamente e, por vezes, acidentalmente, por isso, necessita estar preparado.

Look up. Be prepared. Report. Share.

Olhe para cima, Esteja preparado, Relate, Partilhe.



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