Radar is a frequently used technology, that's application can be seen in such products as grocery store doors, police speed detectors, and is used by planes to detect aircraft and other objects. The primary use of radar is to detect and gather information of moving and stationary objects, but has many more applications than just that.
Radar relies on the concepts of Doppler shift and echo location. Each is a common phenomenon that you experience each day but are probably unaware of. Doppler shift occurs when sound is reflected, generated, or projected from a moving object. A good example of Doppler shift would be if a car blaring it's horn went by you at a high speed, the sound would get louder and have a high tone as the vehicle got closer and fainter with a lower tone as the vehicle passed and got further away. It is possible to combine Doppler shift and echo to get a precise calculation on how fast that car is moving. If you were able to send out loud sounds toward the car, some of the waves would bounce off the moving car and echo back towards you. However, these sound waves will be compressed, causing them to have a higher pitch that the original sound that was generated. By measuring the pitch of this echo we are able to determine how fast the car is moving. .
The use of sound to locate objects and use it for tracking is the idea behind sonar, or "sound radar". This kind of tracking, which is also known as "echo location", is sufficient for submarines and boats due to how well sound travels through water. Unfortunately there are some problems using sound outside of an aquatic environment: sound doesn't travel too far, (a mile at most) and a faint echo would be received making it difficult to make accurate readings from the results. Another problem would be presented with the audible noise that sonar produces making it dissicult, if not impossible, to mask it's use. Radar on the other hand, uses this same concept to transmit and receive its signal but instead of sound, radar uses radio waves.
First, let's clarify the term "Radar." ... Those are basically your tracking radar, which is the military's most common along with jamming radar which is used to distort signals to other radar sites. ... Those type of radar are vessel traffic system radar. ... Each radar facility has to have air conditioning to keep the radar sensors cool. ... But how does radar work really? ...
You might remember the heroic role that newly-invented radar played in the Second World War. ... But even in its earliest years, as it was helping win the war, radar proved to be more than an expert enemy locator. Radar technicians, doodling away in their idle moments, found that they could focus a radar beam on a marshmallow and toast it. ... Hitler's army had its own version of radar, using radio waves. ... Well, suppose you're roasting a chicken in a radar range. ...
Some of these devices are, radars, which is actually sound waves, which bounce off clouds and give location of storms this way. Another such device is actually a variation of radar called "Doppler Radar". ... However, "Doppler Radar" is not used so much for everyday forecasting, but for tornadoes and very large storms. The way Doppler Radar works is almost the same as regular radar with one advantage, it also can measure the speed of an object or storm, which makes its prime usage tornado watching. ... This "lab" which they use can send information back and forth using radars like discus...
This chapter in the book also went to talk about the advantages Britain had over the German, superior planes and radar. ... For me the biggest advantage had at the time was their radar technology. The biggest advantage of having radar was the early warning they had of approaching German planes. ... The radar played a big factor during the Blitz. ... I also learned that Britain had a great air force that with the help of radar help defeat the Germans. ...
Known as the "Father of Radio", this scientist from Quebec created the basic concepts of Radar and Radio Sonar (Clarkson Secondary). ... In addition to radar and sonar, Fessenden is credited with being the first to transmit continual sound waves wirelessly. ... The greatest project and contribution of the NRC was the radar research project, which received over 40% of the spending and employed over sixty scientists (Avery 81). ... After only several months of research they were seeing significant progression in the technology and were producing over fifty orders for their GL 3 set for the Brit...
The introduction of radar was a step forward in anti-submarine warfare that gave the British forces some security. ... The lack of radar also made for an easy get away for the surfaced submarines. ... Radar systems were also planted on airplanes later on in he war but were only useful for tracking submarines from a certain distance. When planes were to close to the submarine the radar would lose the signal, but the radar was useful in locating the whereabouts of the submarines (Pitt, 125). Radar was one of the essential tools that were needed to defeat the German forces, but the radar system w...
Topic: Patriot Missile System Specific Purpose: To inform my audience about the Patriot Missile System, its component and its flaws. INTRODUCTION Opening Sentence: "As most of you heard the latest news today The United States said today it would withdraw all combat forces in Saudi Arabia by t...
The pilots made an emergency landing at a radar site named CAM-1. CAM-1 is one of twenty-seven radar sites on the 2 Distant Early Warning Line. These are sites maintained by the United States Air Force for early warning radar detection during the Cold War. ...
The AWACS plane is a modified Boeing 707 that has two struts, which hold a radar dish on top of aft of the aircraft. The radar is very sensitive and can pick up see low, slow flying aircraft from as far away as 300 miles. ... These individuals will try to evade the radar any way they can. ...
