![]() With the emergence of driver-less vehicles, radar is expected to assist the automated platform to monitor its environment, thus preventing unwanted incidents. One example is lidar, which uses predominantly infrared light from lasers rather than radio waves. Other systems similar to radar make use of other parts of the electromagnetic spectrum. High tech radar systems are associated with digital signal processing, machine learning and are capable of extracting useful information from very high noise levels. ![]() The modern uses of radar are highly diverse, including air and terrestrial traffic control, radar astronomy, air-defense systems, anti-missile systems, marine radars to locate landmarks and other ships, aircraft anti-collision systems, ocean surveillance systems, outer space surveillance and rendezvous systems, meteorological precipitation monitoring, altimetry and flight control systems, guided missile target locating systems, self-driving cars, and ground-penetrating radar for geological observations. During RAF radar courses in 1954–55 at Yatesbury Training Camp "radio azimuth direction and ranging" was suggested. The term radar has since entered English and other languages as a common noun, losing all capitalization. The term RADAR was coined in 1940 by the United States Navy as an acronym for "radio detection and ranging". A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution. Radar was developed secretly for military use by several countries in the period before and during World War II. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. Radar ( radio detection and ranging) is a detection system that uses radio waves to determine the distance ( ranging), angle, and radial velocity of objects relative to the site. It rotates steadily, sweeping the airspace with a narrow beam. Plus, on my hand, I don't have to look up the codes of every fruit as the checkout people have them memorized.Radar of the type used for detection of aircraft. The gentleman at my local Schnucks always thanks people for using the manned checkout as it gives them more hours. Matthews" you didn't say anything about a third store you shifty secret-keeper. One of the ladies who works at my local Byerly's - sometimes as a cashier - says she loves that they installed the self-checkout thingies as they give her time to get a lot of her other work done, see.Īnd what's this about three Target stores? On my eyeglasses thread you said your stores were "Springhurst" and "St. Most of them are to the right, but one of the stores I frequent dispenses the receipt just to the left of the screen.while the coupons are dispensed to the right. I've found the Kroger stores a little more varied. Tell me, how many check lanes do you think would have been open, in the same area, if there weren't a self-checkout? One, yes one.īy the way.who installs and maintains those machines? And, do you think they make more than a cashier?Īlso, the Target stores I've visited since this thread started, and there have been 3, all have their receipts dispensed on the right. The Target or the Kroger or the Walmart, etc., has 4 or 5 self-check kiosks being manned by one person. There is always an attendant at the checkout. Probably something for another thread, but have you no concept of economics? You are doing their work and most certainly are not saving a dime while you screw somebody out of work. ![]() Another screwing for the workers in those stores. ![]() I might ask, why you use self checkout, I never have and never will.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |