This website uses cookies to ensure you have the best experience. Learn more

Radar Essay

943 words - 4 pages

Today's society relies heavily on an invention taken for granted: radar. Just about everybody uses radar, whether they realize it or not. Tens of thousands of lives rely on the precision and speed of radar to guide their plane through the skies unscathed. Others just use it when they turn on the morning news to check the weather forecast.While radar seems to be an important part of our everyday lives, it has not been around for long. It was not put into effect until 1935, near World War II. The British and the Americans both worked on radar, but they did not work together to build a single system. They each developed their own systems at the same time. In 1935, the first radar systems are installed in Great Britain, called the Early Warning Detection system. In 1940, Great Britain and the United States install radar aboard fighter planes, giving them an advantage in plane-to-plane combat as well as air-to-ground attacks.Radar works on a relatively simple theory. It's one that everybody has experienced in their lifetime. Radar works much like an echo. In an echo, a sound is sent out in all directions. When the sound waves find an object, such as a cliff face, they will bounce back to the source of the echo. If you count the number of seconds from when the sound was made to when the sound was heard, you can figure out the distance the sound had to travel. The formula is:(S/2) X 1100 = D(Half of the total time times 1100 feet per second equals the distance from the origin to the reflection point)Of course, radar is a much more complicated system than just somebody shouting and listening for the echo. In fact, modern radar listens not only for an echo, but where the echo comes from, what direction the object is moving, its speed, and its distance. There are two types of modern radar: continuous wave radar, and pulse radar.Pulse radar works like an echo. The transmitter sends out short bursts of radio waves. It then shuts off, and the receiver listens for the echoes. Echoes from pulse radar can tell the distance and direction of the object creating the echo. This is the most common form of radar, and it is the one that is used the most in airports around the world today.Continuous wave radar works on a different theory, the Doppler Theory. The Doppler Theory works on the principle that when a radio wave of a set frequency hits a moving object, the frequency of the wave will change according to how the object is moving. If the object is moving toward the Doppler radar station, the object will reflect back a higher frequency wave, If it is moving away, the frequency of the wave will be lower. From the change in frequency, the speed of the target can This is the type of radar that is...

Find Another Essay On Radar

Non-Radar in Air Traffic Control Essay

1485 words - 6 pages The opinions about non-radar procedures in Air Traffic Control seem to vary. Most people I have heard or read from over the past few years have said that non-radar is pointless when you have radar. Others have said that it is a good way to coordinate with other controllers and that you cannot always rely on technology. I find this scenario similar to movies and literature. Nowadays for example, most people would rather watch the movie The

All Hale Radar, Savior Of The Brits

1871 words - 7 pages Silence, nothing but silence until there's a buzz in the air, slowly getting louder, then suddenly dozens of bombers fly over cities and towns destroying everything in sight, without a single plane launching to defend the homeland. This is how many air raids were carried out through World War I because the only defenses to air attacks were hearing and eyesight. The invention that would change everything was radar, which was created in the years

S-Band and X-Band Radar

1029 words - 4 pages The S-band portion of the microwave band of the electromagnetic spectrum ranges from 2.0 to 4.0 GHz., crossing the boundary between UHF and SHF at 3.0 GHz. The S-band wavelength is around 10 cm. The maritime industry shares S-band radar with other entities permitted by the Federal Communications Commission (FCC) in this country and by the International Telecommunication Union (ITU) worldwide; and this permission is granted to such entities as

Optimal Synthetic Aperture Radar Image Detection

1568 words - 6 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 [1]. The

Subprime Loans: The under-the-radar loans

1832 words - 7 pages The problem to be investigated is the ethics and effects of subprime loans on the financial institutions, borrowers and stakeholders. The subprime market was created to provide borrowers with a FICO score below 570 access to home loans. Inopportunely these loans were a major financial risk as most of the borrowers did not have the long-term income to pay for the high interest rate loans. (Jennings, 2012) Subprime loans started out as a

Design & Engineering, Fabrication, Inspection, Testing and Supply of Radar Level Transmitter as per CB&I Enquiry Document no: CE-010-3304 subsequent c

1050 words - 4 pages Sub: Design & Engineering, Fabrication, Inspection, Testing and Supply of Radar Level Transmitter as per CB&I Enquiry Document no: CE-010-3304 subsequent correspondence. Ref : Annexure-E for List of Correspondence. Dear Sir, With reference to the above Inquiry from our EPCM Contractor M/s.CB&I Lummus Crest Mauritius hereinafter called “EPCM CONTRACTOR”, we Nagarjuna Oil Corporation Limited, hereinafter called as “OWNER”, are pleased to

First Love

906 words - 4 pages History About RadarRadar was developed between 1935-40 independently in several countries around the world as a defence tool for detecting enemy aircrafts and ships. Sir Robert Watson-Watt, a Scots physicist devised the first practical radar system in 1935.During World War II and immensely after the war technology evolved rapidly in radar, giving radar the following benefits, higher power out puts, greater receiver sensitivity and improved

Technology is one important factor in successful military innovations

1073 words - 5 pages part for successful military innovations. But, the military organizational adaptations and doctrinal changes has the same importance. For better understanding, the example of the Radar innovation an its influence in military organizations will confirm this thesis. For this reason, it is important to understand the technological evolution of the Radar, the Radar adaptations in the military organizations, and the doctrinal changes that the Radar

On the Evolution of War

910 words - 4 pages instead of conducting experiments to more deeply understand the natural world. The World War II weapons race for advanced technologies, including radar, sophisticated aircraft, and the atomic bomb, forever impacted modern life and the methods of war. One of the most revolutionary war developments was radio detection and ranging, also known as radar. Radar systems were able to detect the location of distant objects by transmitting radio signals

Radar's Significance During World War II

2198 words - 9 pages Radar's SignificanceDuring World War IIAndrew Simpson250335535History 020Dr. AcresJuly 23, 2007The Allied forces use of radar during World War II can be considered one of the most important factors in helping to turn the tide of the war in favour of the Allies. Radar finds its origins decades before the outbreak of fighting the Second World War but the form with which it was used during the war stems from the work of Sir Robert Watson-Watt. His

The Computer and Police Officers and Law Enforcement Officials

644 words - 3 pages information about your rights. The control room need system effective that work quickly and easy to deploy instruct ,respond and monitor .Also police use communicate converse with other public organization ,such as ambulance services or fire department. Radar for police Police use police radar on traffic from a large police assume technology developed. Police use radar in ways to reduce the speed of the car driver and a void accidents. That r

Similar Essays

Radar Essay

811 words - 4 pages The Radar The Origin of the Radar: Radar came about during the days of World War II, although people understood what a radars purpose was much sooner than the 1930s. The radar was used in World War II to try to locate aircraft and other ships that were a threat to that country. Radar is a name that was given to it by the United States Navy, and is really an acronym for “Radio Detection And Ranging.” In the early 1900s, the Titanic sailed the

Police Radar Essay

1190 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

Jindalee Oth Radar Essay

1437 words - 6 pages Jindalee Operational Radar Network (JORN)The Jindalee Operational Radar Network (JORN) is an over the horizon radar network. It is used to monitor sea and air movements within a 37,000 km² area. Within the network lie three over-the-horizon-radar systems, all focused on the protection of Australia.HISTORYThe origins for this network go all the way back to post World War II in which Australia and the United States conducted research into the

Basic Radar, Sonar & Doppler Theory

1645 words - 7 pages BASIC RADAR, SONAR, & DOPPLER THEORYRADARThe term RADAR is an acronym made up of the words radio detection and ranging. In today's society radar plays an important part of our every day lives. Thousands of lives rely on the accuracy and speed of radar to guide their plane through the skies unscathed. Radar is also used to provide us our daily weather report and forecast. While radar is taken for granted in our daily lives, it is a relatively