STUDY ON PREDICTION OF ZENITH TROPOSPHERIC DELAY BY USE OF BP NEURAL NETWORK
基于BP神经网络的对流层延迟预测研究

BP neural network technology improved according to Levenberg-Marquart theory was used for GPS tropospheric delay prediction with the data of Southern California Integrated GPS Network.It is shown that the deviations between the predicted value of 76% GPS Stations and the actual value are less than 3cm.The accuracy of the prediction achieves centimeter level,at some sites amounted to millimeters.Unreasonabl spatial location of the site and site elevation different to the surrounding sites of training samples...