Table of Contents
Basic Concept of how it works
Classification of radar
Things used in radar
Different ranges and uses
The STAP’s theory was published by Lawrence E. Brennan and Irving S. Reed in the early 1970s. Space-time adaptive processing (STAP) is a signal processing technique which is most commonly used by radar systems. Radar signal processing benefits from STAP in areas where interference is a problem (i.e. Ground clutter, jamming, etc.). It is very easy to find the target using this method. STAP uses a two-dimensional filtering technique using a phased-array antenna with multiple spatial channels. To implement STAP an antenna array is used, over a several pulse repetition intervals. The output of this is a linear combination or weighted sum of the input signal.
Basic Concept of how it works
Here the signal is broadcasted all over. When it detects the object signal is sent back to the antenna and this way the object is detected. It is same as the person speaks some words in well and echo comes back with the same words. This way signal come back with some information about the object. RADAR CLASSIFICATIONS
1. Classification based on specific functions
High-frequency signals are transmitted toward the targets. The transmitted signal is reflected by the target and then received by the same radar.
Click here to unlock this and over one million essaysGet Access
The headpiece sends the signal through the skin and to the implant to pick up. Than the implant picks up the sound and sends it through the lead and to the electrode array. Finally, the sound is picked up by the hearing nerve and the message is sent to the brain.
Rangefinders have become a huge part of hunting. So what makes up the best hunting rangefinder? Well, it is obvious that knowing the range of your target is a huge benefit, especially when shooting long range and archery. The further out a shot is, the more the projectile will drop, but if you know your weapon and the distance to the target, you can effectively shoot at incredible distances. Here we will take a look at what you should look for in a rangefinder for hunting
The selection of satellites bands with wider frequencies allows a variety of information to travel and decreases the limitation of usage by the users. The Ka-Band (26-40GHz) the communication satellites provides high resolution, close ranges targeting radar on military crafts(TIA,2013). The current suggestion of band would be the Ka-Band (26-40GHz) the communication satellites allows high resolution, close ranges that support strong military functions(TIA,2013). advancements to the developing concept, identify leverage over the other choices, utilizing Ka-bands do propose substantiated risks however, it is still operable (Lewis, 2014). Users offering themselves a band with wider frequency means information can transfer swiftly whereas, a smaller frequency could offer more accuracy but limits the user capability. All forums offer positive attribute and consequential attributes but overall the assessment has to be made by the operation leader. As technology develops engineers are developing ideal that are properly modified to support the needs of the community and excel in
The invention of radar, known as Radio Direction Finding (RDF) at the time, by the Department of Scientific and Industrial research in 1934 initially allowed aircraft to be detected at a distance of thirty-eight miles. By 1937, improvements to RDF had enabled it to see aircraft at a range of one hundred miles, complete with the bearing of enemy aircraft4. The British recognized the potential of RDF to be used simultaneously with other electronic and communication aids to provide an early-detecting system. The development of an early-warning system was essential to the British war effort due to the length of the coastline being so close to enemy-occupied territory, with important commercial, industrial and military centres well within the range of enemy aircraft5. An early-warning system also had two distinct advantages over traditional aircraft patrolling of the British coastline. It
Today, radar is one of the most prevalent equipment devices used in the military, especially on naval ships. Radar is so detrimental to the navy because it detects invisible or distant objects by means of reflected radio waves and is capable of locating them accurately in space . Using this method, radars are able to scan for and, or track targets that, again, are too far for the human eye to see. With the AN/SPQ-9B, a ship is able to do both; in fact it can track while scanning. The track while
Radar (Radio Detection and Ranging) is a method of detection that works by sending out radio waves and detecting any reflections from distant objects. Created by Christian Hülsmeyer, a German scientist, in 1904, the invention first became useful in World War 1, where it was used to determine the location of enemy planes.. Once World War 2 began and U-boats were once again roaming the Atlantic, the Allies knew that they needed a means of detecting the location of these deadly submarines. Radar could essentially “see” things as dots using radio waves, and although it was not created to specifically detect U-boats, it became a technological weapon that the allies could use for their benefit. Additionally, Sonar (Sound Navigation and Ranging) was built specifically to counteract the threat of underwater enemies such as the U-boats. Sonar uses sound waves to detect distant objects. Similar to radar, the use of sonar allowed the British surface fleet to detect the direction and depth of these submarines and destroy many of them. What makes these two technologies similar is that they both locate enemy ships using waves that could not be seen and they could do it at such a distance that the Germans would have no way of interfering and stopping them. This advanced technology was a detriment to the U-boats because the German Navy could no longer surprise the Allied forces.
This radar is the primary system used for air and surface defense. “How SPY-1 works is that a mechanically rotating radar sends signals or beams outboard from the ship to pick up all targets” (Lockheed Martin). Once the radar receives return signals, the SPY-1 must use a different tracking radar by sending out signals of electromagnetic energy to track and determine what the target is as well as possible threat capabilities. Another reason why SPY-1 is the spear head for US Navy radar systems is its ability to track over one hundred targets at a time. “Some strengths of the SPY-1 that other radar do not have is it’s fast reaction and ability to detect and send a missile in less than ten seconds, fast transition from SPY-1 silent to full radiate, and its large field of fire with minimal blockage zones” (AN/SPY-1, 2000). The most important advantage of the SPY-1 is its ability to be linked with the Aegis system and how they work together to create one multi-functional defense system. SPY-1 is able to track targets while surveying the area as well as update the command and decision system used by Aegis to engage targets if
The primary reason I am seeking a new opportunity is that the Raytheon Missile Systems (RMS) Procurement Office in Louisville, KY is either going to close and transfer responsibilities to the HQ in Tucson, AZ. Or, the Louisville Office will become a cell for low value quick-turn purchase orders. Louisville Raytheon primarily serves as an overhaul, repair center and parts warehouse for the Phalanx weapon. The Procurement/Subcontracts office is relatively small consisting of 13-personnel. The high-level Corporate discussion is occurring for a variety of reasons. There is no stated timeline for a decision, however, it is prudent to seriously assess options sooner rather
Caitlyn Jenner is happy about being female and looking like a woman. However, Radar Online, June 30, 2015 reported that she has one problem that she wants fixed. Her voice doesn’t sound feminine enough to please her. She is trying to find a way to make her voice sound less masculine. A source told Radar Online that Caitlyn feels like her voice does not go with her body. It is too reminiscent of her former life as Bruce. One option she can undergo to help with her voice problem is surgery. Another thought would be to hire a voice coach.
During this moment the speech processor converts the sound signals heard through the microphone into digital signals. Following on, the digital signals are then sent through to the transmitter. The transmitter, which converts the digital signals into electric impulses, sends this signal through to the receiver/ stimulator using radio waves.
Like it’s always the case with warfare technology, ways were devised for counteracting the enemy’s radar. These techniques can be divided into electronic, mechanical, and
Abstract— The proliferation of Location Based Services (LBSs) and Geo Social Networks (GSNs) significantly increase the exposure risks of location information leading to leakage of sensitive information. Location privacy preserving methods are designed to provide a specified level of privacy based on some pre-defined privacy guarantees such as k-anonymity and e-differential privacy. In certain situations, we note that users would need different privacy protection levels based on their relationships and trust associated with the users of the exposed location data. For instance, users of a location-based social network may need a smaller privacy protection level in interaction with their close friends and a larger privacy protection level in relationship with public users. In this paper, we present a privacy aware access control model that provides different location privacy protection levels based on various access control list of users.