A Real Time Simulation Method for Near-Surface Remote Sensing Experiments Based on Dynamic Virtual Scenes

Remote sensing observations and landscape modelling are important methods to promote remote sensing accuracy in forestry. However, the current model scenes still have simplifications in the three-dimensional structure and spatial heterogeneity, and they are mostly static scenes, which deviate from the real world. This study proposes a virtual remote sensing observation method based on digital twin technology. A fine 3D scene was reconstructed by digital twin technology, where a computer simulation model was used to achieve the simulation of the radiative transfer process, and a coupled wind model was used to simulate the effect of wind on BRF observations. The results show that the effect of vertical wind is greater than that of parallel wind, and the trend of BRF change is related to the difference between the canopy and the ground surface.