Complex Virtual Atmosphere Environment Constructing Based On WRF

With the deepening of the modernization of weapons and equipment,a single natural environment cannot effectively quantify the actual combat effectiveness of weapons and equipment.Compared with the traditional physical test methods,the virtual test method has the advantages of low cost,short cycle and high efficiency.Therefore,the purpose of this project is to build a complex virtual atmospheric environment based on the WRF(Weather Research and Forecasting Model)model,and provide large-scale and highprecision complex virtual atmospheric environment resources including cloud,rain,temperature,density,pressure,wind field,humidity,mixing ratio and other atmospheric environment elements for HIT-joint test platform(H-JTP).In this paper,the advantages and disadvantages of various atmospheric environment modeling methods are analyzed in detail.Aiming at the problems of low fidelity and small range of the original atmospheric resources,the theoretical analysis,construction and operation method of WRF mode are studied to generate real and reliable virtual atmospheric environment data.In view of the complicated configuration process,cumbersome operation process,and the inability to achieve large-scale time-space range and high-temporalresolution test tasks in a single run,this paper studies the space-time splitting method of WRF mode calculation task and the automatic operation method of WRF mode calculation task.Based on the above research results,WRF mode is built in Linux system,and the WRF mode configuration and operation control software,which provides a simple configuration interface and simplifies the generation of atmospheric data based on WRF mode,is developed by using Qt5.Aiming at the problem that WRF model output does not include atmospheric pressure and other common atmospheric environmental elements,the calculation method of atmospheric environmental elements based on WRF model output is studied.Aiming at the problem of nonstandard representation and exchange of atmospheric environment data,the representation and exchange method of atmospheric environment based on SEDRIS(Synthetic Environment Data Representation and Interchange Specification)is studied.Based on the above research results,the WRF data processing software was developed in Windows system using QT4.According to the WRF output data,nine four-dimensional atmospheric environmental elements,including pressure,potential temperature,pseudo equivalent potential temperature,dew point temperature,relative humidity,temperature,horizontal wind speed,horizontal wind direction and atmospheric density,were calculated by the WRF data processing software.Some atmospheric elements are represented as SEDRIS transmission format(STF)data and text format data by the WRF data processing software.In addition,in order to solve the problem that other experimental resources in H-JTP can not use the atmospheric environment resources generated by this project,QT4 is used to develop the atmospheric environment operation service component in Windows system,and the spatiotemporal interpolation algorithm is studied to realize the high-precision use of complex atmospheric environment resources.Finally,the function of the software and the generated atmospheric data are tested.After verification,the atmospheric data is true and reliable,and the software can generate a complex virtual atmospheric environment that meets the SEDRIS in a specific time-space range,specific time-space resolution,and specific atmospheric environment elements according to the configuration of test personnel.The atmospheric environment operation service component can be correctly connected to the H-JTP to provide other test members with atmospheric environment data at any time and space position.The design meets the design requirements.