机载前视式低空风切变探测数值模拟研究

 使用二维面对称微下击暴流数值模式，对“湿”微下击暴流风切变进行了模拟，并通过工作在Ｘ－波段的微波多普勒雷达，对飞机着陆下滑航迹前方的微下击暴流风切变进行探测。结果表明：通过单元－单元自动增益控制、杂波滤波和天线仰角控制，可提前８０ｓ（６ｋｍ）探测到“湿”微下击暴流风切变，符合ＦＡＡ提出的适航要求

AIRBORNE PREDICTIVE LOW ALTITUDE WINDSHEAR DETECTION NUMERICAL SIMULATION

Using a 2 dimensional plane symmetric model,a “wet” microburst windshear was simulated.An X band microwave Doppler weather radar was used to detect the hazardous low altitude microburst windshear during aircraft landing.Results show that using bin to bin automatic gain control(AGC),clutter filtering,and suitable antenna tilt management,the “wet” microburst windshear can be accurately detected 80s(approximately 6km) in front of the aircraft,meeting the certification requirements proposed by FAA.