| With the rapid development of mobile Internet, the demand for WLAN (Wireless Local Area Networks) networks is growing, wireless network planning software has been applied. Geographic Information Systems as an integral part of the network planning software provide accurate geographic information data for WLAN propagation model, coverage prediction, simulation capacity and an interface for manual network planners. Network planners can use the wireless network planning software to design and analysis the wireless network, render the results of predict coverage and capacity simulation.3D GIS(Geographic Information System)includes2D GIS data information, provides more space information, improves the accuracy of network planning by analyzing the3D GIS spatial information. it can render the results of network planning in3D space, showing the network planning results more realistic.This paper focuses on the application of3D GIS in wireless network planning software, propose and implement a wireless network planning project which is render the3D GIS results of the wireless network planning after studying the current research status of3D GIS.This paper investigates the network planning of WLAN,3D GIS research status of WLAN networks, research theoretical knowledge of GIS,study the rotation of3D coordinate system and the object projection model. This article describes the U-Net network planning platform, composed of propagation model, coverage prediction, simulation capacity, Geographic Information Systems and other modules. This paper focuses on geographic information system modules. Geographic Information Systems is to provide a3D GIS data for other modules, and render the result of WLAN network planning. The main contents of the study is to design3D GIS project rending the result of WLAN network planning, select the appropriate3D GIS implementation project after considering the needs of the project and laboratory conditions, and finish3D GIS rendering project based on Google earth by programming. This paper analyzes the rendering result of WLAN network planning combined with the U-Net platform. Finally, this article propose a solution of map revision for the3D(three-dimensional) electronic map data old to modify the3D electronic map data. |
