支持精密着舰的海基区域增强系统完好性监测方法研究

项目名称： 支持精密着舰的海基区域增强系统完好性监测方法研究

项目编号： No.61304235

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 李亮

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 由于基于伪距差分定位技术的区域增强系统无法满足精密着舰所需导航性能的要求，在海基区域增强系统的架构下，本项目拟研究基于载波相位差分定位技术的完好性监测方法以支持高可靠性的精密着舰。考虑到着舰环境下完好性风险源的多样性，运用贝叶斯准则建立完好性风险分配体系。针对测距域内多种类型的非理想误差，采用基于膨胀系数集的sigma膨胀算法补偿非零均值高斯误差和非高斯误差。鉴于模糊度域内整周模糊度的可靠性是决定定位精度和可用性的重要因素，依据整周模糊度解算的关键步骤，探索检验整周模糊度可靠性的完好性监测方法。为提高基线解的可靠性，研究定位域的多参考一致性检测算法监测参考接收机故障，在此基础上利用基于总体最小二乘理论的完好性监测方法实现基线形变量的监测。通过本项目的研究，使得海基区域增强系统能够支持高可靠性的精密着舰，并为基于卫星导航精密定位的完好性监测奠定理论基础。

中文关键词： 海基区域增强系统；完好性监测；sigma膨胀；多参考一致性检测；基线形变

英文摘要： Since the pseudorange differential positioning based area augmentation system has limitation in satisfying the Required Navigation Performance (RNP) of Precision Shipboard Landing (PSL), this proposed project explores the integrity monitoring method of Sea-based Area Augmentation System (SAAS) based on carrier phase differential positioning to support PSL with high reliability. As diversity of integrity risk resources originate from shipboard landing environment, the Bayesian criterion is applied to establish the integrity risk allocation framework. In terms of multiple error resources with non-ideal distribution in the range domain, the inflation coefficients based sigma inflation approach is developed to address the issue of compensating the non-zero mean Gaussian error and the non-Gaussian error. Since the reliability of Integer Ambiguity Resolution (IAR) in the ambiguity domain is of significance to determine the positioning accuracy and the availability, according to the critical calculation process of IAR, the integrity monitoring is implemented to verify the reliability of IAR. In order to improve the reliability of the baseline solution, the position domain-based multiple reference consistency check is developed to monitor the reference receiver's fault, integrity monitoring approach based on the total l

英文关键词： SAAS；integrity monitoring；sigma inflation；MRCC；baseline flexure