Archive for the ‘Science’ Category

Homing pigeons are the original sat-navs!

Tuesday, August 11th, 2009

SNN0517A_124638aIt has been an aged-old mystery why pigeons always find their way home. Even if at times they head off to the wrong directions at the start of the flight, they still manage to return to where they took off, puzzling cultures and scientists all over the world for a very long time.
Researchers at the University of Auckland recently announced that the mystery has now been solved, saying homing pigeons follows magnetic fields around the earth for routes of their flight, and doing the same to find their way home.
Pushing further that the homing pigeons are probably the first satellite navigators, the Auckland scientists said the pigeons have a unique global positioning technology built into their system. The results of the research further state that such ability of the homing pigeons is like an orientation of map-and-compass where a pigeon first figure out its surrounding then fly off and find guide to take themselves home.
Furthermore, it has been published that homing pigeons’ beaks have magnetic particles that act like a compass, providing the birds with an accurate sense of direction. Not only that, the beak reacts to the earth’s external magnetic fields with such high sensitivity and specific manner so they always get the locations right.
Another mystery the researchers have answers for is the question of pigeons flying off in the wrong directions. It showed that the birds are doing this not as a random act but as a helpful method of knowing the magnetic fields and its contour lines,
The researchers also surmise that such proven theory is not limited to homing pigeons alone, but most likely with other birds and some animals which are influenced by the magnetic fields of our planet.

Find out more about the featured article from these resources:
Telegraph
sciencecentric.com

Out now! A monitor that could detect GPS interferences and jams

Monday, August 10th, 2009

chronosChronos Technology recently introduced the handheld gadget in the UK to help GPS users detect recurring and heavy GPS satellite power, and even GPS signal and interference on the satellite navigation L1 channel. Called the CTL 3500 GPS Interference Monitor, the device has the capability to point out both deliberate and accidental interferences that jams GPS signals.

The Lydbrook based Chronos Technology also announced that intentional electronic warfare attacks could be indicated in the CTL 3500 gadget. With its filtering and detection technology systems, the device could also detect accidental obstruction and calculated meddling to GPS sensor signals.

Relatively cheaper and no doubt handy, this battery operated device employs precise and advanced low noise signal amplification with SAW filters and logarithmic detection. With this, unwanted signals like waveform or modulation scheme, the filtering and detection techniques could monitor any jams within the scope of the GPS L1 band. The CTL 3500 GPS Interference Monitor also has the capability to indicate levels on the cadenced vibrator and the 5 LEDs.

The gadget could be fully operational and function as support for engineers that will conduct checking of GPS antenna installations. It can also test installations of building rooftops for interference from other sources and the nearby GPS antennas, as well as classify whether GPS jams are being accidentally rebroadcasted from substandard, corroded cable or dysfunctional connector or antenna banding.

This good news from Chronos Technology Limited came at a time where there had been loads of feedback regarding the need to install monitors for GPS jams and interferences, regardless of the nature of such obstruction in signals, consistent with their production of GNSS components and accessories for applications such as positioning, navigation and communications industries, the British company launched this product recently, and aims for the military and the large public to employ its advantages.

Chronos remain the top specialist provider and system integrator of various technical solutions for synchronization, time of day and remote monitoring applications.
You can find out more about Chronos Technology Ltd. at mae.pennnet.com

To learn more about other Chronos products, click here. optoiq.com

Puffins get sat-navs to determine population decline

Saturday, August 8th, 2009

fluffin puffinWhat could be more alarming than seeing over 35,000 drop of the Puffins’ numbers in just five years! Now with the latest satellite navigation technology, these birds from the Isle of May and Farne Islands off the Northumberland Coast can now render information regarding their decrease.
Very little has been known about the birds’ reaction to climate change, pollution controls and how their natural cycle of life. But with the new sat-nav systems to be fitted to around 30 puffins, any retrieved information from the GPS data on the birds should give many clues and answers. The tags are similar to tom-tom devices for vehicles and it stores back-data and then retrieves the tag.
Apart from the usual GPS tags, the birds will also be fitted with time-depth recorders for their diving patterns and reactions to sea temperatures. Scientists are also hoping to get a view of the puffins’ feeding grounds and other areas where they are exposed to get any indication of its effect on the untimely deaths of the birds. The sat-nav will also collect data particularly on the sand eels which are the puffins’ main food source, and how the eels’ migration to the cooler waters has been a huge detriment to the new diet of the birds. Also, the system will look into why the puffins are not returning to the islands for breeding and to nest, and if indeed their winter activities are largely to question about their fast disappearance.
The sat-nav will cover all aspects of how puffins float, swim and dive for food, and return to land during their nesting season, and data retrieved will be processed at the Newcastle University. Scientists are hoping they will soon have the answers and provide the public with the latest developments of the Puffins population decline.
Find out more about the featured article from these resources:
Telegraph

Teletext

Joint Replacements method now uses SatNav Science

Monday, August 3rd, 2009

D91A86382A5AE6266533BC566BEF366B.0Satnavs aren’t limited alone to guiding motorists through roads and streets. The Orthopilot is a testament that makers of the devices are pursuing satnavs practicability in medicine and human health concerns, particularly to surgeons who perform knee replacements. In UK alone, close to 60,000 people need knee replacement each year.

The Orthopilot is a technological gadget now employed by doctors performing joint surgeries such as knees and hips replacement that employs GPS technology. Developed in the United Kingdom, the Orthopilot helps surgeons align artificial knee joints, making the traditional method close to being a thing of the past.

While regular knee operations are more of guess-work and requires extensive experience, the new technology guides the surgeons in crucial operations in surgery such as joints alignment. When a joint replacement is out of line even by the smallest millimeter, the surgery is bound to be a failure in the future years. This is because the miscalculation on the alignment will put a load on the artificial knee and the bone itself, subjecting the area and bones involved to heavy stress and wear.

Also, the low 80% success rate of regular knee replacement procedure is quite an alarming number, and the repeat operations are also high, which is even ringing more alarm bells.

But what used to be done with the naked eye, the surgeons can now do so more effectively with the Orthopilot. With over 95% reported success rates, surgeons are saved the taxing effort of perfecting every single operation the old way. With the help of computer guides, surgeons can now perform transplants and operations on joints with remarkable accuracy.

The Orthopilot works by providing from its software the maps of alignment and anatomy of the knee and other joints. The information is sent to the surgeon so that in performing the implant, exact orientations required are met. Hence, repeat operations are cut drastically and health risks are avoided.

More helpful information on satnavs for surgeries can be yours. Just click on Sky News
Sky
Details on the same can also be found at Yahoo News