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2. Weather radar - Wikipedia

   en.wikipedia.org/wiki/Weather_radar

   Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).

3. Numerical weather prediction - Wikipedia

   en.wikipedia.org/wiki/Numerical_weather_prediction

   The ENIAC main control panel at the Moore School of Electrical Engineering operated by Betty Jennings and Frances Bilas. The history of numerical weather prediction began in the 1920s through the efforts of Lewis Fry Richardson, who used procedures originally developed by Vilhelm Bjerknes [1] to produce by hand a six-hour forecast for the state of the atmosphere over two points in central ...

4. Mini-automatic radar plotting aid - Wikipedia

   en.wikipedia.org/wiki/Mini-automatic_radar...

   Mini-automatic radar plotting aid (or MARPA) is a maritime radar feature for target tracking and collision avoidance. Targets must be manually selected, but are then tracked automatically, including range, bearing, target speed, target direction (course), CPA (closest point of approach), and TCPA (time of closest point of approach), safe or dangerous indication, and proximity alarm.

5. Plan position indicator - Wikipedia

   en.wikipedia.org/wiki/Plan_position_indicator

   A plan position indicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar ...

6. JL-10A - Wikipedia

   en.wikipedia.org/wiki/JL-10A

   The radar is built to MIL-STD-1553 standard so it is compatible with western electronics and weaponry. Originally, the radar is capable of simultaneously tracking 10 targets (later to be upgraded to 15) and engaging 2 (later to be upgraded to 6) of the 10 tracked when using semi-active radar homing air-to-air missiles , or 4 of the 10 tracked ...

7. Radar - Wikipedia

   en.wikipedia.org/wiki/Radar

   Radar is a system that uses radio waves to determine the distance (), 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.

8. Southern Ontario tornado outbreak of 2005 - Wikipedia

   en.wikipedia.org/wiki/Southern_Ontario_Tornado...

   This same system had been causing an outbreak of tornadoes over Wisconsin the day before. As shown in the map to the left, there was up to 50 mm (2.0 in) of precipitable water in the warm air mass invading Southern Ontario with a strong southwesterly low level jet parallel to the cold front and the presence of an upper jet-stream. All of these ...

9. Imaging radar - Wikipedia

   en.wikipedia.org/wiki/Imaging_radar

   Imaging radar is an application of radar which is used to create two-dimensional images, typically of landscapes. Imaging radar provides its light to illuminate an area on the ground and take a picture at radio wavelengths. It uses an antenna and digital computer storage to record its images.