航空计算技术
航空計算技術
항공계산기술
AERONAUTICAL COMPUTER TECHNIQUE
2013年
6期
59-62
,共4页
航迹预测%GRIB数据%风数据%气象建模
航跡預測%GRIB數據%風數據%氣象建模
항적예측%GRIB수거%풍수거%기상건모
trajectory prediction%GRIB data%wind data%meteorological modeling
四维航迹预测的准确性是轨迹运行与空管决策支持的基础，而高空风数据支持下的气象建模是提高航迹预测准确性的关键。通过解析GRIB格式的风数据，获取各高度层的风速和风向，同时依据风对地速、航向的影响进行四维航迹预测建模，利用浦东机场的进场航班实现仿真验证，将预测结果与实际雷达轨迹对比，验证了风影响下四维航迹预测的准确性。
四維航跡預測的準確性是軌跡運行與空管決策支持的基礎，而高空風數據支持下的氣象建模是提高航跡預測準確性的關鍵。通過解析GRIB格式的風數據，穫取各高度層的風速和風嚮，同時依據風對地速、航嚮的影響進行四維航跡預測建模，利用浦東機場的進場航班實現倣真驗證，將預測結果與實際雷達軌跡對比，驗證瞭風影響下四維航跡預測的準確性。
사유항적예측적준학성시궤적운행여공관결책지지적기출，이고공풍수거지지하적기상건모시제고항적예측준학성적관건。통과해석GRIB격식적풍수거，획취각고도층적풍속화풍향，동시의거풍대지속、항향적영향진행사유항적예측건모，이용포동궤장적진장항반실현방진험증，장예측결과여실제뢰체궤적대비，험증료풍영향하사유항적예측적준학성。
The accuracy of 4 D trajectory prediction is the foundation of trajectory-based operation and de-cision support tools of ATC .Meteorological modeling ,especially the wind modeling ,is the key element for improving the precision of trajectory prediction .Through analyzing the wind data in GRIB format , wind speed and direction at each levels can be obtained .Meanwhile ,the 4 D trajectory prediction model is con-structed based on the wind effect to aircraft movements ,especially Ground Speed and Heading of aircraft . Taking arrival flights to Shanghai Pudong International Airport as an example ,a simulation is conducted through the comparison of prediction results and the radar information .And the simulation results indicate the effectiveness of the proposed approach .
