无线传感器网络信号传播模型优化设计.doc
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无线传感器网络信号传播模型优化设计,1.7万字自己原创的毕业论文，已经通过校内系统检测，重复率低，仅在本站独家出售，大家放心下载使用摘要：如何准确的修订传播模型是中的关键问题，它关系到能否将采集到的数据进行准确有效的计算，直接影响了设计的预测结果。这就要求不仅仅对模型的选择要恰当，同时对...
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无线传感器网络信号传播模型优化设计
1.7万字
自己原创的毕业论文，已经通过校内系统检测，重复率低，仅在本站独家出售，大家放心下载使用
摘要：如何准确的修订传播模型是无线传感器网络信号传播模型优化设计中的关键问题，它关系到能否将采集到的数据进行准确有效的计算，直接影响了设计的预测结果。这就要求不仅仅对模型的选择要恰当，同时对实验器材和实验步骤也要做出严谨的选择与规划。以求在硬件及环境有限的情况下，尽可能的令采集到的数据保持准确，以求在导入模型的过程中，尽可能的减少误差。
在毕业设计中，实验环境是为平整公路、平原草地、山地表面。因为无线传感器网络节点部署距离与环境密切相关，实际应用的场景有人类活动密集的公路，有少量树木和灌木的草地，也有地形起伏草木丛生的山地。测试硬件上选择了与传播模型参数相匹配的2.4GHz的全向天线和Jennic公司生产的5139型传感节点。适合2.4GHz和山地的已有传播模型是Egli模型，这种通用模型需要在实际中修订后才能贴合具体环境。由实验数据可以得到诸如最大传播距离、发射器架高以及移动台架高等数据，再结合一些经由查表所得的数据，这样根据不同环境条件下的传播损耗公式即可计算出传播损耗。由此可以得出，本次设计需修订的主要是传播损耗公式中对于不同地形所作出修正的修正因子增益。具体是在不同条件下按所分区间测量发射器的通信距离，得出较精确的最大通信距离。再通过公式计算，得出传播损耗的具体数值。随后导入模型中进行修订。
其中，在每种环境下测试时，都会通过对发射器天线高度的调整来获取不同的数据。具体的高度设定在地面、距地面1m高以及距地面1.5m高。其结果表明，每次提高发射器天线的高度都会带来通信距离的提升，从而影响了所涉及到的诸多数据。在修订完成之后，更加准确的描述了所测试环境的无线传播环境。
关键词：无线传感器网络；山地；草地；公路；传播模型；天线；Jennic节点
Optimization Design of Signal Propagation Model for Wireless Sensor Networks
Abstract：How accurate is the revised propagation model signal propagation model for wireless sensor networks to optimize the design of the key issues, whether it is related to the collected data to calculate accurately and efficiently, directly affect the predicted results of the design. This requires not only the choice of the model to be appropriate, while the experimental equipment and experimental procedures have to make rigorous selection and planning. In order hardware and limited environmental conditions, as much as possible so that the collected data remain accurate in order to import the model in the process as much as possible to reduce errors.
Graduation design, experimental environment for smooth roads, grass plains , mountain surface. Since the deployment of wireless sensor network nodes and the environment are closely related to the distance , the scene of the practical application of intensive human activities highway , a small amount of grass trees and shrubs , there are forested mountainous topography . And dissemination of model parameters chosen to match the 2.4GHz omnidirectional antenna and Jennic company's 5139 -type sensor node test hardware. Suitable existing 2.4GHz and mountain propagation model is Egli model , after this general model in practice need to be revised in order to fit the specific environment. Can be obtained from experimental data such as the maximum propagation distance , a transmitter and a mobile gantry frame, high Higher data , coupled with some data obtained via a look-up table , so that the propagation loss formula under different environmental conditions can be calculated from the propagation loss . It can be concluded that this is mainly designed to be revised propagation loss formulas for different terrain correction factor correction gains made . Specifically under different conditions by measuring the inter-partition communication distance between the transmitter and gives a more accurate maximum communication distance. Through the calculation , the propagation loss of the specific values obtained . Then import the model be revised.
Wherein the different data to obtain , in each test environment by the transmitter antennas are adjusted height . Specific height setting on the ground , away from the ground floor 1m high and 1.5m high . The results show that the increase of each transmitter antenna height to improve the communication distance will bring , thus affecting many of the data involved . After completion of the amendments , a more accurate description of the radio propagation environment of the test environment.
Key Words:Wireless Sensor Networks; Mountain;Propagation models; Antenna; Mode; Accurate
目录
第一章 概述 1
1.1 研究意义 1
1.2 研究内容 2
1.3 本文结构 3
第二章 基础知识 4
2.1 无线传感器网络简介 4
2.2 天线和节点 5
2.3 传播模型 10
第三章 修订方法及实验校正 14
3.1理论步骤 15
3.1.1设备及模型选择 15
3.2 实验校正 18
3.2.1实地测量数据 18
3.2.2 实地测量照片 21
3.2.3 数据计算及实验结果 22
致 谢 24
参考文献 25
1.7万字
自己原创的毕业论文，已经通过校内系统检测，重复率低，仅在本站独家出售，大家放心下载使用
摘要：如何准确的修订传播模型是无线传感器网络信号传播模型优化设计中的关键问题，它关系到能否将采集到的数据进行准确有效的计算，直接影响了设计的预测结果。这就要求不仅仅对模型的选择要恰当，同时对实验器材和实验步骤也要做出严谨的选择与规划。以求在硬件及环境有限的情况下，尽可能的令采集到的数据保持准确，以求在导入模型的过程中，尽可能的减少误差。
在毕业设计中，实验环境是为平整公路、平原草地、山地表面。因为无线传感器网络节点部署距离与环境密切相关，实际应用的场景有人类活动密集的公路，有少量树木和灌木的草地，也有地形起伏草木丛生的山地。测试硬件上选择了与传播模型参数相匹配的2.4GHz的全向天线和Jennic公司生产的5139型传感节点。适合2.4GHz和山地的已有传播模型是Egli模型，这种通用模型需要在实际中修订后才能贴合具体环境。由实验数据可以得到诸如最大传播距离、发射器架高以及移动台架高等数据，再结合一些经由查表所得的数据，这样根据不同环境条件下的传播损耗公式即可计算出传播损耗。由此可以得出，本次设计需修订的主要是传播损耗公式中对于不同地形所作出修正的修正因子增益。具体是在不同条件下按所分区间测量发射器的通信距离，得出较精确的最大通信距离。再通过公式计算，得出传播损耗的具体数值。随后导入模型中进行修订。
其中，在每种环境下测试时，都会通过对发射器天线高度的调整来获取不同的数据。具体的高度设定在地面、距地面1m高以及距地面1.5m高。其结果表明，每次提高发射器天线的高度都会带来通信距离的提升，从而影响了所涉及到的诸多数据。在修订完成之后，更加准确的描述了所测试环境的无线传播环境。
关键词：无线传感器网络；山地；草地；公路；传播模型；天线；Jennic节点
Optimization Design of Signal Propagation Model for Wireless Sensor Networks
Abstract：How accurate is the revised propagation model signal propagation model for wireless sensor networks to optimize the design of the key issues, whether it is related to the collected data to calculate accurately and efficiently, directly affect the predicted results of the design. This requires not only the choice of the model to be appropriate, while the experimental equipment and experimental procedures have to make rigorous selection and planning. In order hardware and limited environmental conditions, as much as possible so that the collected data remain accurate in order to import the model in the process as much as possible to reduce errors.
Graduation design, experimental environment for smooth roads, grass plains , mountain surface. Since the deployment of wireless sensor network nodes and the environment are closely related to the distance , the scene of the practical application of intensive human activities highway , a small amount of grass trees and shrubs , there are forested mountainous topography . And dissemination of model parameters chosen to match the 2.4GHz omnidirectional antenna and Jennic company's 5139 -type sensor node test hardware. Suitable existing 2.4GHz and mountain propagation model is Egli model , after this general model in practice need to be revised in order to fit the specific environment. Can be obtained from experimental data such as the maximum propagation distance , a transmitter and a mobile gantry frame, high Higher data , coupled with some data obtained via a look-up table , so that the propagation loss formula under different environmental conditions can be calculated from the propagation loss . It can be concluded that this is mainly designed to be revised propagation loss formulas for different terrain correction factor correction gains made . Specifically under different conditions by measuring the inter-partition communication distance between the transmitter and gives a more accurate maximum communication distance. Through the calculation , the propagation loss of the specific values obtained . Then import the model be revised.
Wherein the different data to obtain , in each test environment by the transmitter antennas are adjusted height . Specific height setting on the ground , away from the ground floor 1m high and 1.5m high . The results show that the increase of each transmitter antenna height to improve the communication distance will bring , thus affecting many of the data involved . After completion of the amendments , a more accurate description of the radio propagation environment of the test environment.
Key Words:Wireless Sensor Networks; Mountain;Propagation models; Antenna; Mode; Accurate
目录
第一章 概述 1
1.1 研究意义 1
1.2 研究内容 2
1.3 本文结构 3
第二章 基础知识 4
2.1 无线传感器网络简介 4
2.2 天线和节点 5
2.3 传播模型 10
第三章 修订方法及实验校正 14
3.1理论步骤 15
3.1.1设备及模型选择 15
3.2 实验校正 18
3.2.1实地测量数据 18
3.2.2 实地测量照片 21
3.2.3 数据计算及实验结果 22
致 谢 24
参考文献 25
