长春理工大学本科毕业设计编号本科生毕业设计基于CDMA室内超声波三维定位系统设计CDMA-basedindoorultrasonicthree-dimensionalpositioningsystemdesign摘要本系统结合射频通信低成本、低功耗的特点和超声波定位精度高的特点，而避开它们的缺点，如单独的射频识别定位精度不高、超声波测距的覆盖范围有限。提出了一种基于CDMA室内超声波三维定位系统，能达到较高的定位实时性和厘米级的定位精度。本系统具有快速定位和定位精度高等优点，并且能实现多个移动目标节点的定位，使多目标同时定位或导航的应用成为可能，特别适用于多目标的室内协同工作，如井下人员的精确定位、医疗监护、远动捕获以及室内无人机和机器人的航迹规划等。关键词：CDMA三维动态定位射频同步超声波ABSTRACTThesystemcombinestheadvantagesoftheradiofrequencycommunicationssuchaslow-cost,lowpowerconsumptionandhighprecisionoftheultrasonicpositioning.whileavoidingtheirdisadvantages,suchasseparateradiofrequencyidentificationaccuracyisnothigh,thelimitedcoverageofultrasonicranging.Weproposedathree-dimensionalindoorultrasonicpositioningsystemthatbaseonCDMAtechnology.Itcanachievehighlocalizationandreal-timecentimeter-levelpositioningaccuracy.ThesystemisfastpositioningandhighprecisionpositioningThesystemcanachievethepositioningofmultiplemobiletargetnodes,sothatmulti-objectivepositioningornavigationapplicationsalsobecomepossible,especiallyforthemulti-objectiveworkintheroom,suchasthepreciselocationoftheundergroundpersonnel,medicalcare,capturetheremoteobject,indoorUAV,andpainingthepathoftherobotandsoon.Keywords:CDMA；Three-dimensionaldynamic；RFsynchronization；Ultrasonic目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc295335482"摘要PAGEREF_Toc295335482\hIHYPERLINK\l"_Toc295335483"ABSTRACTPAGEREF_Toc295335483\hIIHYPERLINK\l"_Toc295335484"目录PAGEREF_Toc295335484\hIIIHYPERLINK\l"_Toc295335485"第1章绪论PAGEREF_Toc295335485\h1HYPERLINK\l"_Toc295335486"1.1课题研究目的和意义PAGEREF_Toc295335486\h1HYPERLINK\l"_Toc295335487"1.2国内外研究现状和前景分析PAGEREF_Toc295335487\h1HYPERLINK\l"_Toc295335488"1.2.1国内现状PAGEREF_Toc295335488\h1HYPERLINK\l"_Toc295335489"1.2.2国外现状PAGEREF_Toc295335489\h2HYPERLINK\l"_Toc295335490"1.2.3前景分析PAGEREF_Toc295335490\h3HYPERLINK\l"_Toc295335491"1.3本文主要研究内容PAGEREF_Toc295335491\h3HYPERLINK\l"_Toc295335492"第2章超声波定位原理PAGEREF_Toc295335492\h4HYPER