摘要
利用数值天气预报快速获取高空气象参数是当前战时远程火炮射击诸元解算重点研究内容之一,但是数值天气预报初始场误差大,直接影响了气象参数预报精度。采用三维变分同化法,同化NCEP ADP全球高空观测天气数据,结合背景场气象资料使用WRF进行气象预报,并对其应用于有风状态下的6自由度弹道的解算效果进行了分析。结果表明:同化试验对风速预报改善作用显著,应用循环同化后的预报结果较未同化数值预报结果,可使弹道计算射程X方向射程的预测相对误差减小了约0.14%;Z方向侧偏的预测相对误差减小了约3.89%。
Using numerical weather forecast to quickly obtain high-altitude meteorological parameters is one of the key research contents in the current wartime long-range artillery shooting.However,the large initial field error of the numerical weather forecast directly affects the forecast accuracy of meteorological parameters.Combined with the background field meteorological data to carry out weather forecast through WRF,this paper uses the three-dimensional variational assimilation method to assimilate the NCEP ADP global high-altitude observation weather data,and analyzes the impact of its application to the 6-DOF ballistic solutions under windy conditions.The results show that the assimilation test has a significant effect on the forecast improvement of wind speed and direction.Compared with the numerical prediction results without assimilation,the prediction results after application of cyclic assimilation can reduce the relative error of the prediction of the calculated ballistic range in the X direction by about 0.14%,and reduce the relative error of the prediction in the Z direction side deflection by about 3.89%.
作者
景银华
李岩
陈霖
JING Yinhua;LI Yan;CHEN Lin(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第4期121-126,共6页
Journal of Ordnance Equipment Engineering
关键词
弹道解算
数值气象
三维变分
资料同化
弹道落点
ballistic solution
numerical meteorology
three-dimensional variation
data assimilation
ballistic landing point
