摘要介绍数字地图概念、精度。This paper introduces the digital map's conception, precision, format, and it's use in the mobile communication's programming and optimication.
4Zagami JM,PARL S A,Bussgang JJ,et al.Providing universal location services using a wireless E-911 location network[J].IEEE Commun.Mag,1998,(4)
5Reed J H,et al.An overview of the challenges and progress in meeting the E-91 1 requirement for location service [J].IEEE Commun.Mag,1998,(4)
6董晓鲁.在3G中实现LBS的定位技术和GIS系统[J].通信世界,2004,(4).
7Chang Fa Yang,Wen Yao Chang,Wen Yao Hwu.An Automated UTD Approach for Modeling Wave Propagation over Hilly Terrain Based on Digital Maps.IEEE Trans.on AP,1998:1 880-1 883.
8Breakall J K.The Modeling and Measurement of HF Antenna Skywave Radiation Patterns in Irregular Terrain.IEEE Trans on AP,1994,42(7):936-944.
