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Volume 14,Issue 3 Autumn 2012

China Successfully Develops Its First Low-Altitude Wind Measuring Continuous-Wave Radar



Wind shear, the strong fluctuation of wind speed at low altitudes, is widely regarded as the killer of aircraft and the plague of airports. Now, however, the deadly phenomenon may have finally met its match. The No. 23 Research Institute of the Second Academy of the China Aerospace Science and Industry Corporation (CASIC) has successfully developed a low-altitude wind measuring continuous-wave radar system, the first of its kind developed in China. The new wind measuring radar is expected to provide better data than other similar systems to safeguard the landings and takeoffs of aircraft.

By providing reliable data on wind speed and direction, the radar is planned to serve landing and departing aircraft by alerting them specifically when wind shear occurs. The term wind shear refers to sudden changes in the direction and the speed of winds, which may result in a deviation of an aircraft from its intended route, or even the loss of stability and control. The successfully developed low-altitude wind measuring continuous wave radar performs its task by continuously probing the wind data every 5 meters to a range of 20 meters to 600 meters high in low altitude airspace, which greatly enhances accuracy of the data.

Traditional pulse radar systems are only able to measure the low-altitude wind field data every 60 meters to a range of 60 to 600 meters high, thus giving the data comparatively lower accuracy and larger blind spots.




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