研究目的
To evaluate and analyze the observation data of laser automatic snow depth observation instrument in terms of accuracy, data stability and data integrity, and to compare it with manual observation.
研究成果
The automatic observation method of snow depth is feasible, the composition structure and appearance design of the snow depth sensor are basically reasonable, and the sensor works normally and continuously in low temperature, strong wind, heavy snow and other harsh environments without any operating fault. The accuracy between the tested snow depth sensor and the manual comparison observation is good, which can continuously and real-time monitor the change of snow depth, basically meeting the requirements of automatic snow depth observation in winter.
研究不足
Due to snow blowing, snowfall and differential melting, snow surface concave and convex will cause data difference; The snow surface melts into the ice surface. The ice water mixture will lead to the echo weakening and result in the phenomenon of missing data measurement. During the melting process of snow cover surface, when the temperature difference between day and night is large, the artificial observation will be significantly smaller than that of the laser automatic observation instrument.
