gps天线与hfss仿真设计

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1、摘要GPS是目前世界上最先进、最完善的卫星导航系统与定位系统，它不仅具有全球性、全天候、实时高精度，三维导航与定位能力，而且具有良好的搞干扰和保密性。而GPS就是通过接受卫星信号，进行定位或者导航的终端。因此接受信号就必须用到微带天线。所以基于GPS的微带天线的研究显得相当重要，广泛的科学实验活动也为这一技术的应用展现极为广阔的前景。而高精度测量天线作为卫星导航接收机的重要组成部分，它的性能如何直接关系到卫星导航接收机测量精度的大小。天线的相位中心变化和多径效应是高精度卫星导航测量系统中的显着误差来源，天线的低仰角增益影响接收机的灵敏度。本文针对高精度卫星测量型接收天线的

2、需求，设计了一种可工作在GPS导航系统的单频微带天线，并采用仿真软件AnsoftHFSS对天线结构进行了优化。本文首先介绍了GPS卫星导航系统应用和工作原理，高精度测量型天线的研究现状、我国卫星导航系统的发展现状。其次，分别介绍了微带天线分析方法和工作原理，分析了微带天线的基本辐射参数、电路参数、设计的基本思路和天线相位中心的标定。再次，借助于仿真软件AnsoftHFSS软件对天线性能进行了数值仿真，设计出了单频圆极化微带天线。关键词：GPS，天线，参数，仿真AbstractGPSisthemostadvancedandconsummatesystemforsatelli

3、tenavigationandpositioningintheworld,itisnotonlyglobal,all-weather,real-timehigh-precision,three-dimensionalnavigationandpositioningcapabilities,andhasagoodanti-interferenceandconfidentiality.ButGPSisthroughacceptsthesatellitesignal,carriesonthelocalizationortheguidanceterminal.Thereforea

4、cceptsthesignaltousetheantenna.ThereforetheGPSantenna'sresearchappearsquiteimportant,widespreadscientificexperimentalsoforthistechnicalapplicationdevelopmentextremelybroadprospect.Butthehigh-accuracysurveyantennatakesthesatellitenavigationreceiver'simportantcomponent,itsperformancehowdire

5、ctrelationsatellitenavigationreceivermeasuringaccuracysize.Antenna'sphasecenterchangeandthemulti-diametereffectareinthehighaccuracysatellitenavigationmeasurementsystem'sappreciableerrororiginate,antenna'slowelevationanglegainaffectsreceiver'ssensitivity.Thisarticleinviewofthehighaccuracys

6、atellitesurveyreceivingantenna'sdemand,designedonekindtobepossibletoworkintheGPSguidancesystem'smonofrequentmicrostripantennas,andusedsimulationsoftwareAnsoftHFSStocarryontheoptimizationtotheantennastructure.ThisarticlefirstintroducedtheGPSsatellitenavigationalsystemapplicationandtheprinc

7、ipleofwork,thehigh-accuracysurveyantenna'sresearchpresentsituation,ourcountrysatellitenavigationalsystem'sdevelopmentpresentsituation.Next,introducedseparatelythemicrostripantennasanalysismethodandtheprincipleofwork,haveanalyzedmicrostripantennas'sbasicradiationpara