室内卫星导航定位信号模型研究

首先总结了一些室内信道模型研究成果,这些模型或方式都没有给出广义的与室内场景特征有关的信号参数分布,或者仅仅表明了信号参数随着室内场景特征变化的趋势,同时不能反映卫星导航室内信道的动态特性。在前人的信号模型研究基础上,重点分析了室内导航信号衰落特征,提出用卫星陆地移动通信系统中的Lutz模型描述室内导航衰落信道,根据室内环境特征给出模型中各参数的取值,并且对三种典型的室内场景做了仿真。仿真结果表明,这种模型能够很好地描述室内多径和衰落特性。

Indoor Navigation Signal Channel Model Research

Lots of study results about indoor channel model were summarized.These models or manners didn’t present the generalized relationship between the signal parameter and indoor scenario characteristic,or just gave the trend of signal parameter as indoor character changed.And they couldn’t reflect the channel’s dynamic character.On the basis of some researcher’s results,the indoor signal fading character was taken into analysis,and then it was put forward using the Lutz model,which was used to characterize the terrestrial satellite mobile communication system channel,to simulate it.According to the distributing of the indoor environments,the value of the parameters in every scenario was given.Finally,the simulation results of three typical scenarios indicate that this model is capable of characterizing the indoor multipath and fading characteristic.