By means of GPS dummy network reference station positioning system, the ground control points for the calibration of remote sensing image were surveyed with the precision of centimeter level.
利用GPS虚拟网络参考站定位系统，以厘米级精度测定校正遥感图像的地面控制点。
2
With BP artificial neural network, a model is developed to forecast the water level of Luoshan Station on Yangtze River.
运用BP人工神经网络建立了长江螺山站水位预报模型。
3
With it the energy utilization level of the gathering system can be evaluated on the basis of calculation of the gathering pipe network and flow technology in station.