蒲克塞;张顺生;郭承军;

• 1:电子科技大学电子科学技术研究院

摘要(Abstract)：

"主从相关器"结构的接收机常被用来监测C/A码相关函数相关峰的形变,但受制于相关器数量的影响,在GPS卫星低仰角时,监测器并不能及早地发现信号形变,针对这一问题,该文在"主从相关器"结构的接收机基础上,采用了虚拟相关对技术,通过已知的3组相关对(一组"主相关对",两组"从相关对")和Prompt相关器输出,以码片间距为自变量,采用最小二乘的方法,拟合相关器相关值输出三次曲线。拟合曲线上的点作为构建的虚拟相关对输出,它们与已知相关器的输出一起进入之后的相关函数相关峰性形变监测部分处理。采用此种方法,不仅不会遗漏传统算法用到的待测量,而且能扩大待测量的样本空间。同时,该方法不会因为加入新的待测量产生误测。通过仿真发现,在使用3组相关对和Prompt相关器,且GPS卫星仰角较低时,该算法比传统算法更早监测到C/A码形变。

关键词(KeyWords)： 局域增强系统;信号质量监测;C/A码;相关峰形变;虚拟相关对

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 蒲克塞;张顺生;郭承军;

DOI: 10.16251/j.cnki.1009-2307.2015.02.014

参考文献(References)：

• [1]牛飞.GNSS完好性增强理论与方法研究[D].郑州:信息工程大学,2008.
• [2]Xie G.Optimal On-airport Monitoring of the Integrity of GPS-based Landing Systems[D].Stanford University,2004.
• [3]Jafarnia-Jahromi A,Lin T,Broumandan A,et al.Detection and Mitigation of Spoofing Attacks on a Vector Based Tracking GPS Receiver[C]//Proceedings of the International Technical Meeting of The Institute of Navigation.2012.
• [4]Edgar C,Czopek F,Barker B.A Co-operative Anomaly Resolution on PRN-19[C]//Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation(ION GPS 1999).2000:2269-2268.
• [5]Mitelman A,Jung J,Enge P.LAAS Monitoring for a Most Evil Satellite Failure[C]//Proceedings of the1999 National Technical Meeting of the Institute of Navigation.San Diego,CA.1999:129-134.
• [6]Brenner M,Reuter R,Schipper B.GPS Landing System Multipath Evaluation Techniques and Results[C]//Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation(ION GPS 1998).1998:999-1008.
• [7]Saitoh S,Yoshihara T,Fukushima S,et al.Detection of Anomaly Signal by Signal Quality Monitoring Receiver[C]//Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation(ION GNSS 2004).2001:2331-2336.
• [8]Akos D M,Phelts R E,Pullen S,et al.Signal Quality Monitoring:Test Results[C]//Proceedings of the 2000National Technical Meeting of the Institute of Navigation.2000:536-541.
• [9]Phelts R E,Akos D M,Enge P.Robust Signal Quality Monitoring and Detection of Evil Waveforms[C]//Proceedings of the 13th International Technical Meeting of the Satellite Division of the Institute of Navigation,ION GPS.2000:1180-1190.
• [10]Phelts R E.Multicorrelator Techniques for Robust Mitigation of Threats to GPS Signal Quality[D].Stanford University,2001.
• [11]Phelts R E,Walter T,Enge P.Toward Real-time SQM for WAAS:Improved Detection Techniques[C]//Proceedings of the 16th International Technical Meeting of the Satellite Division of the Institute of Navigation,ION GPS/GNSS.2003:9-12.
• [12]Enge P.Local Area Augmentation of GPS for the Precision Approach of Aircraft[C]//Proceedings of the IEEE,1999,87(1):111-132.
• [13]Federal Aviation Administration.Specification:Performance Type One Local Area Augmentation System Ground Facility[EB/OL].[1999-9-21].http://ntl.bts.gov/lib/16000/16800/16880/PB2000105837.pdf.
• [14]Pullen S,Luo M,Xie G,et al.LAAS Ground Facility Design Improvements to Meet Proposed Requirements for Category II/III operations[C]//ION GNSS,2002.