Application of 3D variational numerical weather forecast to ballistic solutions

DOI:	10.11809/bqzbgcxb2023.04.017
Keywords:	ballistic solution; numerical meteorology; three dimensional variation; data assimilation; ballistic landing point
Abstract:	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%.
Issue:	Vol. 44 No. 4 (2023)
Published:	2023-04-28
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