海上纵向补给水声定位系统关键技术研究
文献类型：学位论文
| 作者 | 高杰 |
| 学位类别 | 博士 |
| 答辩日期 | 2009-05-14 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 声学研究所 |
| 关键词 | 短基线 时延估计 最小二乘法 小波变换 正交多项式 |
| 其他题名 | Research on Key techniques of Underwater Acoustic Positioning in Portrait Replenishment System |
| 学位专业 | 信号与信息处理 |
| 中文摘要 | 水声定位技术在海洋领域应用广泛，它可以实时、快速、连续自动地显示所需要的位置信息，这为水声定位技术应用于水下运动目标定位导航提供了可能；同时，电子技术，如DSP、DGPS技术的发展，为我们开发更先进的定位系统创造了条件。 本论文以海上纵向补给水声定位系统研制为背景，主要工作包括水声定位系统高精度定位算法仿真研究，基于μCOS-II嵌入式内核的系统DSP软件实现，系统工作性能湖上试验验证和试验数据后置处理。 本论文首先研究并分析了短基线定位技术及其实现的关键技术；重点分析了系统的误差来源，建立了定位解算模型，提出了一种适合对接的近距离目标位置解算方式。 其次，本论文对系统的信号处理算法做了分析并进行了计算机仿真。仿真分析了基于拷贝相关算法的宽带信号定位精度、基于单比特量化LMS算法的单频信号定位精度；同时提出了基于小波变换的自适应莱特准则算法，用于系统观测数据的野值剔除和曲线平滑。同时，通过Matlab编程实现了基于非线性最小二乘法的声基阵安装误差估计。 本论文还利用DSP芯片，完成了基于μCOS-II嵌入式实时内核的定位系统软件实现。 最后，完成了系统的湖上试验验证，分析了试验数据，并针对系统的不足做了试验数据后置处理。 |
| 英文摘要 | Acoustic positioning system has various applications in Ocean Scientific field. It can provide the location information with the advantages of real-time processing and automatically continuous displaying, which is possible for acoustic positioning system applying in underwater moving target navigation. The development of DSP and DGPS technology provides us the conditions to develop more advanced positioning systems. This paper is based on Underwater Acoustic Positioning in Portrait Replenishment System at Sea. The main work of this thesis includes: simulation researching on high precision position arithmetic for SBL (Short Base Line), signal processing software design based on μCOS-II real-time kernel, experiment on lake, and post-processing. Firstly, the paper presents a new application of SBL acoustic positioning technique in Portrait Replenishment System, researches the essential theories and applications of SBL; turns important on the analysis of error sources; establishes the positioning solver mode; and derives the calculation formula of close target location. Secondly, this paper analyzes the signal processing algorithms and simulates it in computer. Time delay estimation algorithms simulation of LFM and CW each based on copy-correlation and one-bit LMS are finished. A new method applied in experimental data post-processing is proposed as well. The method is based on wavelet transform and adaptive Wright criteria. In addition, the simulation of parameter estimation algorithm based on non-leaner LMS is accomplished using Matlab. Thirdly, using DSP chips, the system software designing is completed based on μCOS-II embedded real-time kernel. Finally, this thesis gives detail information about experiments both on pool and on lake. According to experimental data, an analysis of the inadequacies of the system is proposed, and the post-processing of the experimental data is accomplished. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 74 |
| 源URL | [http://159.226.59.140/handle/311008/584]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 高杰. 海上纵向补给水声定位系统关键技术研究[D]. 声学研究所. 中国科学院声学研究所. 2009. |
入库方式： OAI收割
来源：声学研究所
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