GNSS双频导航信号用户完好性监测机制研究

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GNSS双频导航信号用户完好性监测机制研究

伍维甲, 吴德伟, 戚君宜

空军工程大学信息与导航学院, 陕西西安 710077

收稿日期:2012-04-13 修回日期:2012-06-13 出版日期:2012-12-25 发布日期:2012-12-24
通讯作者: 吴德伟 E-mail:wudewei74609@126.com
作者简介:伍维甲男, 博士研究生。主要研究方向: 卫星导航系统完好性监测。Tel: 029-68641591 E-mail: wuweijia@sina.com
基金资助:
国家自然科学基金(61174194)

Research on User Integrity Monitor Mechanism with GNSS Dual-frequency Navigation Signals

WU Weijia, WU Dewei, QI Junyi

School of Information and Navigation, Air Force Engineering University, Xi’an 710077, China

Received:2012-04-13 Revised:2012-06-13 Online:2012-12-25 Published:2012-12-24
Supported by:
National Natural Science Foundation of China (61174194)

摘要/Abstract

摘要：

用户完好性监测指标通常被用于衡量导航信息的可信度,针对单个卫星导航系统用户完好性监测指标过高、可用性较差的问题,提出一种全球导航卫星系统(GNSS)多系统双频信号联合完好性监测机制,该监测机制使用一定完好性风险分配值下的保护门限作为联合观测下的监测指标;另外,为了确保各种监测假设下的用户完好性,分别讨论了无故障及一颗卫星故障假设下的伪距观测误差获取、保护门限计算以及完好性风险指标分配等问题。仿真结果表明该用户监测机制可有效降低保护门限、提高可用性,在用于I类精密进近时全球大部分区域用户的可用性水平大于95%。

关键词: 全球导航卫星系统, 完好性监测, 保护门限, 完好性风险, 完好性, 可用性

Abstract:

User integrity denotes the measure of the trust the user has in the navigation information. However when a single system navigation signal is available, the aviation users will have poor integrity and low availability. Therefore, integrity monitoring mechanisms are developed which are based on the protection levels and use multi-systems and dual-frequency navigation signals. In order to validate user integrity under fault-free and faulty assumptions, a pseudo-range error estimation, the protection level equations under different assumptions and the fixable integrity risk allocation are studied in detail. The results of the navigation performance simulation show that: the combined observation can effectively reduce the user protection level and improve the availability. In most regions of the world the availability exceeds 95% when it is used for Category I precision approach and landing.

Key words: global navigation satellite system, integrity monitor, protection level, integrity risk, integrity, availability

中图分类号:

V448
TN967.1

伍维甲, 吴德伟, 戚君宜. GNSS双频导航信号用户完好性监测机制研究[J]. 航空学报, 2012, 33(12): 2246-2252.

WU Weijia, WU Dewei, QI Junyi. Research on User Integrity Monitor Mechanism with GNSS Dual-frequency Navigation Signals[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(12): 2246-2252.

参考文献

[1] Blanch J, Walter T, Enge P. Understanding PHMI for safety of life applications in GNSS. ION International Technical Meeting, 2007.

[2] Walter T, Enge P, DeCleene B. Integrity lessons from the WAAS integrity performance panel (WIPP). ION National Technical Meeting, 2003.

[3] Niu F. Theory and technique on GNSS integrity augment. Zhengzhou: Institute of Surveying and Mapping, PLA Information Engineering University, 2008. (in Chinese) 牛飞. GNSS完好性增强理论与方法研究. 郑州: 中国人民解放军信息工程大学测绘学院, 2008.

[4] Walter T, Enge P, Reddan P. Modernizing WAAS. ION GNSS Meeting, 2004.

[5] Ene A, Blanch J, Walter T. Validation of multiple hypothesis RAIM algorithm using dual-frequency GPS and Galileo signals. European Navigation Conference, 2008.

[6] Walter T, Blanch J, Enge P. Coverage improvement for dual frequency SBAS. ION International Technical Meeting, 2010.

[7] Walter T, Blanch J, Enge P. Vertical protection level equations for dual-frequency SBAS. ION GNSS Conference, 2010.

[8] DoT, FAA. Global positioning system wide area aug-mentation system performance standard. Washington, D.C.: FAA, 2008.

[9] Oehler V, Boyero J, Luongo F. The Galileo integrity concept. ION GNSS Meeting, 2004.

[10] Kneissland F, Stober C. Combined integrity of GPS and Galileo. Inside GNSS, 2010, 5(1): 52-63.

[11] Ostolaza J, Alcantarilla I, Caro J. An efficient approach for the development and deployment of a multi-constellation augmentation system: magicSBAS. ION International Technical Meeting, 2011.

[12] RTCA. RTCA/DO-229C Minimum operation performance standards for GPS wide area augmentation system airborne equipment. Washington, D.C.: RTCA, 2001.

[13] Walter T, Blanch J, Enge P. L5 satellite based augmentation systems protection level equations. IGNSS Symposium, 2007.

[14] Rife J, Pullen S, Enge P, et al. Paired overbounding for non-ideal LAAS and WAAS error distributions. IEEE Transactions on Aerospace and Electronic Systems, 2006, 42(4): 1386-1395.

[15] Oehler V, Luongo F, Trautenberg H L, et al. The Galileo integrity concept and performance. ION GNSS Meeting, 2006.

E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

GNSS双频导航信号用户完好性监测机制研究

Research on User Integrity Monitor Mechanism with GNSS Dual-frequency Navigation Signals

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