Combining pseudoranges from GPS and Loran-C for air navigation

IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-01 DOI:10.1109/PLANS.1990.66154

P. Enge, F.B. Vicksell, R. B. Goddard

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引用次数: 15

Abstract

Position fixing, receiver autonomous fault detection, and receiver autonomous fault isolation are treated as system services, and the probability of outage for these three services is computed. The outage probability for the level of service required for nonprecision approach and enroute navigation in the National Airspace System is computed. The analysis assumes that GPS (Global Positioning System) is configured in the Optimal 21 constellation and includes the effects of satellite as well as Loran station failures. it is pointed out that user equipment which combines pseudoranges from GPS and Loran would be more reliable than an unaided GPS receiver or a Loran-only receiver. It could remove coverage outages caused by satellite failures and/or bad satellite geometry. Similarly, it could remove most of the coverage outages caused by Loran station shutdowns, high atmospheric noise levels, or precipitation static. A hybrid GPS/Loran receiver could also reliably provide self-contained fault detection and isolation (otherwise known as receiver autonomous integrity monitoring).<>

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结合GPS和Loran-C伪坐标进行空中导航

将定位、接收机自主故障检测和接收机自主故障隔离视为系统服务，计算这三种服务的停机概率。计算了国家空域系统中非精确进近和航路导航所需服务水平的中断概率。分析假设GPS(全球定位系统)配置在最优21星座，包括卫星和罗兰站故障的影响。指出将GPS伪信号与Loran伪信号相结合的用户设备比单独使用GPS接收机或仅使用Loran接收机更可靠。它可以消除由于卫星故障和/或卫星几何形状不好造成的覆盖中断。同样，它可以消除罗兰站关闭、高大气噪声水平或降水静态造成的大部分覆盖中断。混合GPS/Loran接收机还可以可靠地提供独立的故障检测和隔离(也称为接收机自主完整性监测)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences

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