People are used to using one’s eyes as their main source of sensing their surroundings, sometimes with their sense of smell as an auxiliary. However, sometimes it is not possible to use one’s vision effectively, for example, when one is trying to detect something at a significant distance, or when the conditions for viewing are not ideal, or perhaps when one has lost or has never possessed the sense of vision. All of these are situations where the sense of vision would be insufficient to meet one’s needs.
In order to over come these obstacles, humans discovered and alternate way to see the world using sound. Nevertheless, make no mistake; humans were far from the first to use this ‘advanced’ technology.
In 1793, Italian naturalist, Lazzaro Spallanzani found that blinded bats could navigate just as effectively as normal bats. After further research, it was discovered that bats navigate using echolocation, eventually, also known as biosonar. Echolocation is detection using sound waves. While different species of bats have evolved to using different ways of echolocation, the most precise of the species would be the Horseshoe bat. This unique bat generates an ultrasound frequency of 83 kHz using its larynx, and then listens and processes the echoes it hears. These echoes are made by the sound wave that the bat has generated bouncing off of objects in the range of the wave. The bat uses this information to interpret its surroundings.
Other birds and animals that use echolocation to some extent include, but are not limited to, dolphins, toothed whales, Oilbirds, Swiftlets, Shrews and Tenrecs.
It was not long before people realized what advantages this new discovery could mean.
... middle of paper ...
.... Web. 29 Nov. 2009.
"Sonar: Technology Gallery for." Discovery of Sound in the Sea. Web. 29 Nov. 2009.
"Sound waves." University of Manitoba. Web. 19 Nov. 2009.
"SpringerLink - Journal Article." SpringerLink Home - Main. Web. 29 Nov. 2009. 26
Launer, Donald. (2009). Navigation through the ages. Sheridan House Inc.
Johnson, Bill. (2009). Essential boat radar. West Sussex, United Kingdom: Wiley.
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Missing Images SONAR, as it is most commonly known as has been around since the beginning of time. Animals have used this technique and survived because of it for millions of years. Among the most common are bats and dolphins. Daniel Colloden used a bell to measure the speed of sound underwater in 1822. After the Titanic sunk, the idea of using sound underwater to locate objects, primarily icebergs, was taken up by inventors. Lewis Richardson, a meteorologist, was the first to file a patent for an echo locator one month after the Titanic had sunk.... [tags: sonar sound wave waves]
587 words (1.7 pages)
- An in-road short-range radar has been developed for the purpose of a higher efficiency in vehicle detection. Based on this in-road short-range radar system, this thesis aims to build a model for this radar system using Simulink blocks and test the performance of the entire system especially the processor part in Simulink environment. The main idea of this thesis project is to simulate a target and propagation channel existing in real world, containing time delay, power loss, the influence from different kind of noises and so on, and observe the performance of the model especially the effects from these environment factors.... [tags: Radar, Radio, Traffic, Noise]
848 words (2.4 pages)
- My time spent at Ultra Electronics Sonar Systems was well spent. The company is split into 4 major divisions which consist of Defence, security, transport and energy. I was personally involved in the defence division. The defence sector is broken down into segments and I was working in underwater warfare and maritime. It is to do with how sonars are developed. There are two types of sonars: passive and active. Passive is where the sonar will just listen to any noise emitted by the object and active is where the system will emit a pulse of sound and listens to any echo’s that has been bounced off by an object.... [tags: Project management, Management, Sonar, Project]
1740 words (5 pages)
- Police Radar Guns and Jammers Since Radar’s first use in 1937 by Watson-Watt, where they detected the motion of flying objects by calculating the difference in the signals emitted and received, Radars have been used in various occasion (Crochi). After laser was invented, the modern LIDAR system was used in such missions as the Apollo 15 to help draw moon’s map. Apart from its pervasive use in naval and aerial object detection, the modern technologies, based on the principle of Radar’s working mechanism, are used in smaller handy devices like radar guns to measure the speed of the object.... [tags: Object Detention, Jamming Devices]
979 words (2.8 pages)
- Introduction The Synthetic Aperture Radar (SAR) is a microwave active imagery system that has been largely used due to its possibility of day-and-night operation in all weather conditions. The SAR system generates images by the coherent processing of the scattering signals; this results in a scene texture that has an undesired multiplicative speckled noise, drastically reduces the ability to distinguish the features of the classes . The rejection of the speckle noise motivated many works where ANN algorithms have been applied to SAR imagery classification .... [tags: Technology]
1587 words (4.5 pages)
- Speed detection is one of the most notorious functions of our local and state police. How do they know how fast we are going. Speed determination is accomplished in two basic ways. First, the least sophisticated method is dependent upon an officer's ability to guess your speed. Second, either some electronic method using radar or laser instrumentation authenticates that officer's guess. As you will see, their guesses are usually right on target. What does this mean for you. Usually a speeding ticket or if your infraction isn't a flagrant disregard for safety, a friendly warning.... [tags: police law enforcement radar gun speeding ticket]
1070 words (3.1 pages)
- ... Mode A interrogations are used for plane identification information and mode C interrogations are used for altitude information. Nevertheless, the SSR does not rely on the transponder for the position of the aircraft. It determines by measuring the time it takes for the energy beam to be reflected back to radar and the direction of the reflection comes back from. All the information will transmits to the air traffic control system where it will displayed an aircraft label. b) Roles the systems plays in air traffic management Airport Surveillance Radar (ASR-11) is an integrated primary and secondary surveillance radar system that detects the position of the aircraft and weather conditions... [tags: aricraft, radio waves]
1377 words (3.9 pages)
- Radar Detector Radar, which stands for Radio Detection and Ranging, was developed for military purposes. The British and US military used radar to locate ships and airplanes. However, when they were using this technology annoying blips consistently appeared on its screen. It turned out that these blips were raindrops. They saw this hindrance as a wonderful opportunity and in 1957 created the WSR-57 (weather surveillance, 1957), which became the primary radar for the weather service for nearly 40 years.... [tags: Speeding Technology Essays]
2302 words (6.6 pages)
- Radar Detector Every person has a tendency to speed while they are driving. But most people still drive slowly because nobody wants to get a speeding ticket. But now, during the development of technology, people invented something called the radar detector, which can avoid you from getting caught while you are driving over speed. In this paper, I want to talk about the Passport 8500 X50 comparing to the Valentine One and Bel 985, which is known as the world’s best radar detector. Before trying to discuss this detector; it is important to know either the history of the radar detector or the difference of the police signals.... [tags: Speeding Driving Technology Essays]
1342 words (3.8 pages)
- Nowadays, speed-detection technology has become more and more advanced, and not getting a speeding ticket is almost unavoidable. There are a lot of devices around that can help drivers detect the police traps, but these devices are illegal in many states. As people are driving down the interstate with their cruise control set over the speed limit, many get scared of a police car parked on the side of the road. Right after they pass the trap they look at the speedometer and their rear mirror, hoping that the cop will pass them by and go after those whose speed was higher.... [tags: essays research papers]
386 words (1.1 pages)