• A velocity receiver (also known as a velocity sensor) is a type of sensor that responds to the speed of movement, rather than absolute position. These...
    6 KB (824 words) - 04:57, 26 November 2024
  • Thumbnail for Close Quarters Battle Receiver
    The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 carbine developed by the US Navy. The CQBR features a 10.3 in (262 mm)...
    17 KB (2,039 words) - 19:07, 25 May 2025
  • Ultrasonic thickness gauge Ultra-wideband radar Variable reluctance sensor Velocity receiver Magnetic sensor Charge-coupled device CMOS sensor Angle–sensitive...
    12 KB (1,031 words) - 09:13, 25 February 2025
  • frequency. For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the...
    34 KB (4,295 words) - 16:36, 3 June 2025
  • Thumbnail for Radar
    distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used...
    103 KB (12,058 words) - 03:29, 29 May 2025
  • Thumbnail for Special relativity
    speed of light in vacuum, no matter the motion (velocity, acceleration, etc.) of the light emitter or receiver or its frequency, wavelength, direction, polarization...
    187 KB (25,046 words) - 15:25, 3 June 2025
  • Thumbnail for Wind speed
    Wind speed (redirect from Wind velocity)
    due to Earth's rotation. The meter per second (m/s) is the SI unit for velocity and the unit recommended by the World Meteorological Organization for reporting...
    16 KB (1,981 words) - 21:08, 10 May 2025
  • Thumbnail for Spacetime
    the receiver is stationary with respect to the medium, and the source is moving directly away from the receiver at a speed of vs for a velocity parameter...
    132 KB (19,765 words) - 09:00, 3 June 2025
  • provide position, velocity and time (of the receiver). GNSS receivers have been traditionally implemented in hardware: a hardware GNSS receiver is conceived...
    14 KB (1,670 words) - 20:26, 23 April 2025
  • Thumbnail for Doppler radar
    Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave...
    26 KB (3,269 words) - 01:34, 7 November 2024
  • Thumbnail for Error analysis for the Global Positioning System
    to their velocity. Note that this speed of 3874 m/s is measured relative to Earth's center rather than its surface where the GPS receivers (and users)...
    37 KB (5,051 words) - 19:26, 16 May 2025
  • Thumbnail for Relativistic Doppler effect
    the receiver r {\displaystyle r} and the source s {\displaystyle s} are moving away from each other, v {\displaystyle v} being the relative velocity and...
    47 KB (5,733 words) - 20:03, 22 May 2025
  • Thumbnail for Continuous-wave radar
    Transmitter transmitted energy Receiver backscattered energy, containing much information about the backscatterer Continuous-wave radar (CW radar) is a...
    26 KB (3,814 words) - 17:05, 25 May 2025
  • Thumbnail for Pulse-Doppler radar
    Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which...
    33 KB (4,372 words) - 14:49, 30 October 2024
  • in a new sideband position, revealing the velocity to the receiver. The maximum unambiguous target velocity is given by: ± c P R F 4 f {\displaystyle...
    26 KB (3,753 words) - 12:16, 30 May 2025
  • Thumbnail for ArmaLite AR-7
    requires high-velocity ammunition for reliable functioning. The manufacturers recommend use of 40-grain (2.6 g) round nose bullets in high-velocity loadings...
    17 KB (2,349 words) - 23:39, 9 April 2025
  • the receiver, but not the distance down to the reflector. In the simplest geological setting, with a single horizontal reflector, a constant velocity and...
    16 KB (1,976 words) - 19:39, 23 May 2025
  • Thumbnail for .22 long rifle
    40-grain (2.6 g) bullet, giving it a longer overall length, a higher muzzle velocity and superior performance as a hunting and target round, rendering the ...
    40 KB (4,714 words) - 16:42, 22 April 2025
  • Thumbnail for Ultrasonic pulse velocity test
    An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and...
    12 KB (1,122 words) - 22:55, 27 May 2025
  • ADV system equipped with N receivers records simultaneously 4.N values with each sample. That is, for each receiver, a velocity component, a signal strength...
    9 KB (947 words) - 04:53, 11 March 2024
  • Thumbnail for ArmaLite AR-15
    ArmaLite AR-15 was designed to be a lightweight rifle and to fire a new high-velocity, lightweight, small-caliber cartridge to allow infantrymen to carry more...
    43 KB (4,565 words) - 02:27, 30 January 2025
  • Thumbnail for Speed of light
    speed of light is the same for all observers, no matter their relative velocity. It is the upper limit for the speed at which information, matter, or energy...
    140 KB (14,707 words) - 22:31, 5 June 2025
  • suffer the predicted time delays. Receiver functions contain detailed information on the average seismic velocities within the crust and on the depth...
    9 KB (1,201 words) - 14:32, 29 July 2024
  • Thumbnail for Normal moveout
    combination of factors including the velocity above the reflector, offset, dip of the reflector and the source receiver azimuth in relation to the dip of...
    3 KB (441 words) - 13:15, 15 March 2023
  • Thumbnail for Mk 12 Special Purpose Rifle
    weapons. SPR initially stood for Special Purpose Receiver as it referred to an add-on upper receiver assembly (part of the proposed SOPMOD upgrades),...
    20 KB (2,258 words) - 15:50, 7 May 2025
  • Thumbnail for Seismic data acquisition
    velocity and density contrasts across interfaces of layers of rock or sediments as energy travels from a source through the subsurface to a receiver or...
    14 KB (1,713 words) - 17:34, 9 November 2024
  • to the water velocity along the acoustic path. To measure 3D velocities, at least three beams are required. In rivers, only the 2D velocity is relevant...
    11 KB (1,486 words) - 16:11, 8 June 2024
  • Thumbnail for Time to first fix
    equipment guide: Cold or factory The receiver is missing or has inaccurate estimates of its position, velocity, the time, or the visibility of any of...
    4 KB (427 words) - 14:53, 18 August 2024
  • hydrocarbon exploration. The velocity is calculated by measuring the travel time from the piezoelectric transmitter to the receiver, normally with the units...
    6 KB (941 words) - 01:28, 7 May 2025
  • velocity gate pull-off (VGPO) can be used. These send a return signal that slowly changes in frequency, rather than time, hoping the radar's velocity...
    10 KB (1,555 words) - 14:04, 26 May 2025