Wave radar is a type of radar for measuring wind waves. Several instruments based on a variety of different concepts and techniques are available, and...

the backscatterer Continuous-wave radar (CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted...

Radar is a system that uses radio waves to determine the distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects...

an active radar transceiver). Semi-active missile systems use bistatic continuous-wave radar. The NATO brevity code for a semi-active radar homing missile...

ground-based radars are once again being considered for roles such as maritime reconnaissance and drug enforcement. The frequency of radio waves used by most...

ways of producing the Doppler effect. Radars may be: Coherent pulsed (CP), Pulse-Doppler radar, Continuous wave (CW), or Frequency modulation (FM). Doppler...

point-to-point communication and data links and for radar. This frequency range is used for most radar transmitters, wireless LANs, satellite communication...

Podsolnukh-E over-the-horizon (OTH) surface-wave radar and the 29B6 Konteyner. The latter, while also being an OTH-radar, has separate locations for the transmitter...

radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics. The first operational pulse-Doppler radar was...

A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, typically a sine wave, that for mathematical...

Millimeter-wave cloud radars, also denominated cloud radars, are radar systems designed to monitor clouds with operating frequencies between 24 and 110 GHz...

radio waves when they come back is different from the transmitted waves. When the object is approaching the radar, the frequency of the return waves is higher...

continuous-wave radar to locate buried objects was submitted by Gotthelf Leimbach and Heinrich Löwy in 1910, six years after the first patent for radar itself...

(like a trained mariner) or by using instruments like weather buoys, wave radar or remote sensing satellites. In the case of buoy measurements, the statistics...

further increasing frequency reuse potential. Millimeter waves are used for military fire-control radar, airport security scanners, short range wireless networks...

these bands in order to reduce radar clutter. If the radar wavelength is roughly twice the size of the target, a half-wave resonance effect can still generate...

millimeter-wave radar research, military radar targeting and tracking applications, and some non-military applications. A number of passive millimeter-wave cameras...

VHF radar developed and operated by the former Soviet Union. The P-18 early warning radar is a development of the earlier P-12 radar, the P-18 radar being...

not catch on. The first usage of the word micro-wave apparently occurred in 1931. The development of radar, mainly in secrecy, before and during World War...

Radar cross-section (RCS), denoted σ, also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an...

Hellfire, is a fire-and-forget weapon: equipped with millimeter-wave (MMW) active radar homing, it requires no further guidance after launch—even being...

surface back to the aircraft. Alternatively, Frequency Modulated Continuous-wave radar can be used. The greater the frequency shift the further the distance...

active and passive millimeter wave radar. In 2009, DARPA provided funding to develop "Sandblaster", a millimeter wave radar based enhanced vision system...

the name implies, radar (radio detection and ranging) is the underpinning principle of the system. The system transmits radio waves down to the ground...

Ku band is common as well. The past success of radar detectors was based on the fact that radio-wave beams can not be narrow-enough, so the detector...

stationary antenna. A synthetic-aperture radar is an imaging radar mounted on a moving platform. Electromagnetic waves are transmitted sequentially, the echoes...

build equipment to transition from the British long-wave radar to the new microwave centimeter-band radar made possible by the cavity magnetron. This project...

the AGM-88 HARM. It utilizes millimeter-wave radar for precise terminal guidance, countering the enemy's radar shut-down capability, and has the ability...

representation based on a family of localized chirp functions. Continuous-wave radar Dispersion (optics) Pulse compression Radio propagation § Measuring HF...

target illuminator or illuminator radar. A typical fire-control radar emits a narrow, intense beam of radio waves to ensure accurate tracking information...