分布式超紧GPS/SINS组合架构下的信号处理方法和完好性评估机制研究

项目名称： 分布式超紧GPS/SINS组合架构下的信号处理方法和完好性评估机制研究

项目编号： No.61273081

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 赵琳

作者单位： 哈尔滨工程大学

项目金额： 72万元

中文摘要： 本课题以分布式超紧GPS/SINS组合导航系统为研究对象，深入剖析其组合系统框架、跟踪环路结构、以及可靠性评估技术。利用线性模型下的基于小波-自回归方法和非线性模型下的基于方差混合双自回归方法对信息融合过程中存在的随机多普勒频移误差建模，实现辅助信息的精确传递；综合利用差分相干和信息辅助实现信号捕获，将载波PLL近似为PI（Proportion and Integration）控制模型，引入自抗扰控制机理实现辅助跟踪环路设计，提高复杂环境下的信号处理能力；探索采用"串行（Sequential）"接收机自主完好性监测算法，将可靠性评估的结果反馈到GPS信号处理通道，以进一步提升组合导航系统的性能。通过该课题的研究，提高组合系统抗动态和抗干扰的性能，满足复杂应用环境下导航定位的要求。

中文关键词： GPS/INS；分布式；超紧组合；基带信号预处理；完好性

英文摘要： This research project focus on the distributed ultra-tight GPS/INS integrated navigation system in terms of system formulation, tracking-loop formulation, and reliability assessment technology. The linear model-based wavelet-autoregression method and non-linear model-based variance-mixed dual-autoregression method are utilized to model the random Doppler frequency shift error in the information fusion process, and transfer the aiding information with high-precision. The differential correlation technology and the aiding information are used to improve the signal-acquisition performance. The carrier phase-locking-loop is approximated as proportion and integration control model to verify the robustness of the INS-aided loop. The self anti-disturbance control theory is applied to implement the tracking-loop design to improve the signal-processing ability in the complex navigation environment. The sequential receiver autonomous integrity monitoring is explored to achieve the reliability assessment result. The GPS signal-processing ability can therefore be enhanced with the feedback of assessment result. Through the research project, the integrated navigation system performance can be improved ultimately in terms of high dynamic and anti-disturbance so as to satisfy required navigation performance in the complex nav

英文关键词： GPS/INS；Distribution；Ultra-tight integration；Baseband signal preprocessing；Integrity