+ 1-888-787-5890  
   + 1-302-351-4405  
 
 
 
 

Essay/Term paper: Radar: a silent eye in the sky

Essay, term paper, research paper:  Internet

Free essays available online are good but they will not follow the guidelines of your particular writing assignment. If you need a custom term paper on Internet: Radar: A Silent Eye In The Sky, you can hire a professional writer here to write you a high quality authentic essay. While free essays can be traced by Turnitin (plagiarism detection program), our custom written essays will pass any plagiarism test. Our writing service will save you time and grade.



Radar: A Silent Eye in the Sky

Daniel Brosk Period Two

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 used to track
storms, and the type of radar used by policemen in radar guns.

These are the basics of radar. But, there is a lot of machinery and
computer technology involved in making an accurate picture of what is in the sky,
on the sea, or on the road. Most radar systems are a combination of seven
components (See Appendix A). Each component is a critical part of the radar
system.

The oscillator creates the actual electric waves. It then sends the
radio waves to the modulator.

The modulator is a part of the timing system of a radar system. The
modulator turns on and off the transmitter, creating the pulse radar effect. It
tells the transmitter to send out a pulse, then wait for four milliseconds.

The transmitter amplifies the low-power waves from the oscillator into
high-power waves. These high-power waves usually last for one-millionth of a
second.

The antenna broadcasts the radar signals and then listens for the echoes.


The duplexer is a device that permits the antenna to be both a sending
device, and a receiving device. It routes the signal from the transmitter to
the antenna, and then routes the echoes from the objects to the receiver.

The receiver amplifies the weak signals reflected back to the antenna.
It also filters out background noise that the antenna picks up, sending only the
correct frequencies to the signal processor.

The signal processor takes the signals from the receivers, and removes
signals from stationary objects, such as trees, skyscrapers, or mountains.
Today, this is mostly done by computers.

And last, but not least, we come to the display screen. For many years,
this was a modified TV tube with an electroluminescent coating, which lights up
when hit by electrons, and retained the glow for a few seconds. This is what
creates the "blips" on the radar screen, that flash about every ten seconds,
then fade. In newer systems, the signal processor and the display screen are
combined into a single computer. With the power of today's computers, this
information is transmitted around the world, to other airports, to the
government, and to TV stations, where weather broadcasts are made.

Today, radar systems are standard around the country. The United States
has the most sophisticated radar system, both on the ground and in the sky. On
the ground, we track planes, weather, ships, and many Intercontinental Ballistic
Missiles. From space, we use satellites with radar to map the globe, spy on
foreign countries, and track over the oceans. In each instance, radar plays a
key role in our day-to-day lives.

Bibliography

Hitzeroth, Deborah. Radar: The Silent Detector, 96 pp., ills., Lucent Books,
1990. Page, Irving H. "RADAR," The New Book of Popular Science, pgs. 246-253,
Grolier Inc. 1994.

 

Other sample model essays:

Regulating The Internet: Who's In Charge James H Huff English 111G Fall 1996 The internet was started by the military in the late forties, and has since grown to an incredibly large an...
Response To AOL Controversy The article "America Online, while you can" by Bob Woods is all about the hoopla concerning the fact that America Online, or AOL, has not been able to accommoda...
Review of On-line Publications Because of the prevalence of the internet in today's society many thousands of papers now publish an on-line edition. It is through the use of this medium th...
Internet / Robotics
Robotics The image usually thought of by the word robot is that of a mechanical being, somewhat human in shape. Common in science fiction, robots are generally depicted as working in the ...
Technology / Save The Internet
Save The Internet Did you know that 83.5% of the images available on the Internet were pornographic (Kershaw)? Did you know that pornography on the Internet is readily available to curious...
Internet / Secret Addiction
Secret Addiction Addictions are present in almost all of us. Whether it's a chemical dependence, or simply talking on the phone, they can start to control your life before you can even re...
Smart Car Technology Answer A : The TravTek navigationsystem is installed in 100 Oldsmobile Toronados, the visual part of the system is a computer monitor. Through detailed colour maps, ...
Internet / Smart House
Smart House Some people think that it is difficult to find a relationship between home and computer. Usually people think that computer just using in a company and office. It is a mis...
Society and The Role That Computers Play In USA The microeconomic picture of the U.S. has changed immensely since 1973, and the trends are proving to be consistently downward for the nation's ...
Internet / Software Piracy
Software Piracy Almost everyday it seems , software companys keep pumping out brand new software that kills the day befores in that it is more sophisticated and more in tune with the n...
Experience with Dream Essay - Reliable and great customer service. Quality of work - High quality of work.
Browns Mills, New Jersey, United States
Dream Essay - Very reliable and great customer service. Encourage other to try their service. Writer 91463 - Provided a well written Annotated Bibliography with great deal of detail per the rubric.
Browns Mills, New Jersey, United States
it is always perfect
Frederick, Maryland, United States
The experience with Dream Essay is stress free. Service is excellent and forms various forms of communication all help with customer service. Dream Essay is customer oriented. Writer 17663 is absolutely excellent. This writer provides the highest quality of work possible.
Browns Mills, New Jersey, United States
Only competent & proven writers
Original writing — no plagiarism
Our papers are never resold or reused, period
Satisfaction guarantee — free unlimited revisions
Client-friendly money back guarantee
Total confidentiality & privacy
Guaranteed deadlines
Live Chat & 24/7 customer support
All academic and professional subjects
All difficulty levels
12pt Times New Roman font, double spaced, 1 inch margins
The fastest turnaround in the industry
Fully documented research — free bibliography guaranteed
Fax (additional info): 866-332-0244
Fax (additional info): 866-308-7123
Live Chat Support
Need order related assistance?—Click here to submit a inquiry
© Dreamessays.com. All Rights Reserved.
Dreamessays.com is the property of MEDIATECH LTD