Design And Implementation Of Virtual Reality-based Airborne Weather Element Observation System

Meteorological elements are the elements that indicate the physical state of the atmosphere and physical phenomena.Meteorological observation is the process of studying the meteorological elements and their state of change from the ground to the upper levels by means of an observation system consisting of various instruments.Training in meteorological observation is the main tool for meteorological personnel to improve the level of meteorological observation,which is important for training personnel to obtain meteorological information and make meteorological predictions.Traditional observation training has problems such as high cost,unquantifiable control of observation scenarios and related observation conditions,resulting in unsatisfactory training results.Virtual reality technology is to create a virtual environment to simulate the real environment and data to give users an immersive experience.The introduction of virtual reality technology into meteorological observation training makes up for the drawbacks of traditional meteorological observation training to a certain extent.This paper designs and implements an airborne meteorological observation system based on virtual reality technology for the observation process of airborne meteorological elements: wind and clouds.The system is applied to the teaching and training of meteorological observation,which can simulate the real meteorological observation training and parameterized control of observation conditions,etc.,and achieve the purpose of efficient training.The specific research results are as follows.First,to address the problems of poor interactivity and simulation of traditional wind measurement observation,the path of the sounding balloon is constructed by simulating an optical wind measurement longitude and latitude instrument and using the De Casteljau algorithm to calculate the Bessel fitting curve based on real wind measurement data,and the path constructed based on this method is more consistent with the actual sounding balloon movement.Using particle system and cloud model to achieve weather scene control,using the lighting system to build light sources combined with Lightmap to complete the light transformation.And through Unity’s UI system interaction design to simulate the real instrument operation.Based on the controllable training parameters for scenery simulation,the effect of simulating the real wind measurement training is achieved,and the problem that the observation conditions cannot be quantitatively controlled is solved.Second,for the cloud observation simulation simulation effect is insufficient,and the performance consumption is large and other problems,from the simulation effect and performance consumption two parts to consider,proposed volume cloud rendering combined with optimization method to achieve cloud model construction: through 3Ds Max to build the base cloud model,using parallax mapping technology and Ray Marching technology to cloud rendering,combined with the sky box to achieve cloud observation scene,compared with the existing method The effect is better,and the performance loss is reduced while improving the simulation degree.And the VR-side interaction is designed to achieve the purpose of immersive cloud observation training.Finally,on this basis,the system is designed and implemented with C/S as the basic architecture,combined with virtual reality technology to realize wind measurement simulation and cloud simulation observation process,and build the airborne weather element observation system from two aspects of wind measurement observation training and cloud observation training,parameterize the influencing factors of weather observation,make the weather observation training customizable,and improve the weather observation training effect through interaction design.