Application of satellite laser technology in topographic survey and environmental monitoring
With the increasing demand for continuous monitoring of forest resources,the acquisition of high-precision terrain and canopy height data is particularly important.This paper uses the radar and photogrammetry equipment of GF-7 satellite to explore its application potential in forest topography and canopy height measurement.By analyzing the data from the Puer experimental area,we found that GF-7 and ALS data were highly consistent in topographic height measurements(RMSE 8.01m)and showed good agreement in estimation of forest top height under low slope conditions(R2 0.84,RMSE 3.2m).In addition,the R2 value of CHM generated by stereoscopic images is 0.88 and RMSE is 2.98m on the sample scale,showing high accuracy.These findings indicate that GF-7 data has a broad application prospect in forest resource environmental monitoring.
万方数据
维普
