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    • Image courtesy of mutiaraengineering.com

      mutiaraengineering.com

      • Radar sensors are conversion devices that transform microwave echo signals into electrical signals. They use wireless sensing technology to detect motion by figuring out the object’s position, shape, motion characteristics, and motion trajectory.
      www.fierceelectronics.com/sensors/what-a-radar-sensor
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  2. 1.1 What is radar? RADAR stands for ‘Radio Detection And Ranging’ and is an active transmission and reception method in the microwave GHz range. Radar sensors are used for contactless detection, tracking, and positioning of one or more objects by means of electromagnetic waves. 1.2 How does radar detection work?

    • What is a radar sensor?1
    • What is a radar sensor?2
    • What is a radar sensor?3
    • What is a radar sensor?4
    • What is a radar sensor?5
    • Overview
    • Fundamentals of radar

    radar, electromagnetic sensor used for detecting, locating, tracking, and recognizing objects of various kinds at considerable distances. It operates by transmitting electromagnetic energy toward objects, commonly referred to as targets, and observing the echoes returned from them. The targets may be aircraft, ships, spacecraft, automotive vehicles, and astronomical bodies, or even birds, insects, and rain. Besides determining the presence, location, and velocity of such objects, radar can sometimes obtain their size and shape as well. What distinguishes radar from optical and infrared sensing devices is its ability to detect faraway objects under adverse weather conditions and to determine their range, or distance, with precision.

    Radar is an “active” sensing device in that it has its own source of illumination (a transmitter) for locating targets. It typically operates in the microwave region of the electromagnetic spectrum—measured in hertz (cycles per second), at frequencies extending from about 400 megahertz (MHz) to 40 gigahertz (GHz). It has, however, been used at lower frequencies for long-range applications (frequencies as low as several megahertz, which is the HF [high-frequency], or shortwave, band) and at optical and infrared frequencies (those of laser radar, or lidar). The circuit components and other hardware of radar systems vary with the frequency used, and systems range in size from those small enough to fit in the palm of the hand to those so enormous that they would fill several football fields.

    Radar typically involves the radiating of a narrow beam of electromagnetic energy into space from an antenna (see the figure). The narrow antenna beam scans a region where targets are expected. When a target is illuminated by the beam, it intercepts some of the radiated energy and reflects a portion back toward the radar system. Since most radar systems do not transmit and receive at the same time, a single antenna is often used on a time-shared basis for both transmitting and receiving.

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    A receiver attached to the output element of the antenna extracts the desired reflected signals and (ideally) rejects those that are of no interest. For example, a signal of interest might be the echo from an aircraft. Signals that are not of interest might be echoes from the ground or rain, which can mask and interfere with the detection of the desired echo from the aircraft. The radar measures the location of the target in range and angular direction. Range, or distance, is determined by measuring the total time it takes for the radar signal to make the round trip to the target and back (see below). The angular direction of a target is found from the direction in which the antenna points at the time the echo signal is received. Through measurement of the location of a target at successive instants of time, the target’s recent track can be determined. Once this information has been established, the target’s future path can be predicted. In many surveillance radar applications, the target is not considered to be “detected” until its track has been established.

  3. en.wikipedia.org › wiki › RadarRadar - Wikipedia

    Radar is a system that uses radio waves to determine the distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.

  4. What is Radar Sensor? The sensor which is used to measure the distance, velocity and movements of objects above wide distances is known as a radar sensor and also measures the relative speed of the noticed object.

  5. Jul 18, 2023 · Radar sensors are devices used to detect the presence and motion of objects in their environment. These sensors work by emitting electromagnetic radiation, typically microwaves, and measuring the reflected signal through a receiver. The data collected is then processed to map out a pattern or “map” of what is being detected.

  6. Oct 11, 2023 · What is radar? Radar stand for ‘Radio Detection And Ranging.’ It’s a method involving the active transmission and reception of radio waves in the microwave GHz range. Radar sensors employ these waves to detect the distance, angle and velocity of one or more objects, relative to the radar system, without physical contact.

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