With the support of GIS spatial analysis technology, based on an in-depth study of the wireless propagation environment of a city, combined with the analysis of project requirements, it proposes to use the SPM model to correct the propagation model parameters, using SPM. The wireless propagation model, and research and analysis of the SPM wireless propagation model correction algorithm, further corrected the parameters of a city's SPM wireless propagation model. On this basis, the propagation loss of several classic propagation models in different environments is compared, and the SPM propagation model suitable for the signal frequency band and propagation environment of this study is selected. The correction of the SPM propagation model is based on the designed correction principle and correction process, that is, the weighted least square method is used to fit and analyze the measured level data to obtain an SPM prediction improvement model with local characteristics, and according to the designed verification link. Evaluation of the correction results shows that the accuracy requirements are met. Based on the corrected SPM prediction model, link loss calculations were performed on the 13 test base stations studied in the experiment, and the effective coverage radius of each base station community was obtained. In combination with GIS technology, model parameters and workers of each base station participated in the electronic map loading of the area Go to the network planning software to get the wireless signal coverage prediction map of each base station. Finally, according to the technical requirements of the TD-LTE system network planning and network optimization engineering, the objectiveness and rationality of the site selection and number of base stations in the area were verified, and specific problems regarding poor coverage and overlapping coverage in the area were proposed.

在GIS空间分析技术的支持下，在深入研究某城市无线传播环境的基础上，结合项目需求分析，提出利用SPM模型对传播模型参数进行修正，利用SPM。无线传播模型，以及SPM无线传播模型修正算法的研究与分析，进一步修正了城市SPM无线传播模型的参数。在此基础上，比较了几种经典传播模型在不同环境下的传播损耗，选择了适合本研究信号频段和传播环境的SPM传播模型。SPM传播模型的修正基于设计的修正原理和修正过程，即：采用加权最小二乘法对实测电平数据进行拟合分析，得到具有局部特征的SPM预测改进模型，并根据设计的验证环节。对校正结果的评估表明满足精度要求。基于修正后的SPM预测模型，对实验研究的13个测试基站进行链路损耗计算，得到各基站小区的有效覆盖半径。结合GIS技术，各个基站的模型参数和worker参与区域的电子地图加载，进入网络规划软件，得到各个基站的无线信号覆盖预测图。最后，