Doppler radar


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.
Related to Doppler radar: Doppler weather radar

Doppler radar

[′däp·lər ′rā‚där]
(engineering)
A radar that makes use of the Doppler shift of an echo due to relative motion of target and radar to differentiate between fixed and moving targets and measure target velocities.

Doppler radar

A radar that detects and interprets the Doppler effect (Doppler frequency shift) in terms of the radial velocity of a target. It differentiates between fixed and moving targets by detecting and measuring the apparent change in frequency of the reflected wave caused by the motion of the target or the observer. It can also serve as an airborne navigational aid by giving ground speed and drift. In this mode, it uses an aircraft compass system as its directional reference. The system is less accurate than the inertial navigation system, or OMEGA. See Doppler shift. See also inertial navigation system and OMEGA.

Doppler radar

A system for measuring speed that is based on the Doppler effect. It is used in police radar systems as well as for measuring the velocity of hurricanes and tornadoes. See Doppler effect.
References in periodicals archive ?
A few of these records include the monthly local climatological data publication from larger airports, hour-by-hour surface observations from different weather stations, cooperative weather observer reports, various types of Doppler radar images of the incident location, cloud-to-ground lightning strike data for a specific address, tide reports for boating and marine cases, and archived National Weather Service (NWS) bulletins, advisories, warnings, statements, and storm reports.
On Motorola phones with imaging capabilities, the service provides looping Doppler radar within four miles of the selected location.
As a result of this kind of fixation, the latest front in the state's TV ratings war is weather technology with a funny-sounding name and a serious price tag: Doppler radar.
Our Doppler radar measurements showed that nighthawks flew at a mean speed of 6.
A Doppler radar sensor is used in a new feeder to measure the amount and speed of material flow and signal to a control gate.
Three-Year Deal will Provide Real-Time Delivery Of Doppler Radar, Weather Forecasts and Traffic Conditions To Vehicle Dashboards Though HD Radio
The airport is buying Terminal Doppler Radar (TDR), after 85 flights were diverted and countless delayed in May and June because of thunderstorms.
MANILA -- No typhoon may now enter and make landfall in the country without being detected once the latest Doppler radar is installed next year at a naval base in Zamboanga City, a top science official said on Monday.
Now retired from a career in electronic research, Brandwood shares insights he has gathered over 40 years on the rules-and-pairs approach to Fourier transforms and its application to a wide range of problems, from pulse Doppler radar spectra to delay compensation, from antenna array patterns to efficient clutter simulation.
Even if Doppler radar information may seem highly localized, we find that it enhances the regional atmospheric conditions, which, in turn, can significantly improve the dynamic prediction of how the monsoon depression will move as the storm makes landfall," said Niyogi.
and as a consultant to the Apollo 11 lunar landing team, Schetzen explains the Doppler effect, its various applications and the use of Doppler radar for stabilization and navigation of aircraft.
KCBS (Channel 2) and its sister station KCAL (Channel 9) rely on Doppler radar as do most TV stations.