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Performance Comparison of Deep Integration and Tight Coupling

机译:深度集成和紧密耦合的性能比较

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摘要

This paper presents a comparative analysis of tight coupling and deep integration. Three deeply integrated and two tightly coupled architectures are analyzed. The analysis of the different architectures is performed using the same grade inertial measurement units, satellite constellations, and GPS signal processing techniques (i.e., identical discriminators, coherent integration times, and C/N_0 ratio estimators). Three aspects of the architectures are studied. The first is the general performance improvement offered by deep integration over tight coupling. The second is the effect of using a federated filtering architecture instead of using a single, centralized filter. The third aspect analyzed is the performance of the algorithms when operated with and without vector tracking. The analysis shows that the architectures with vector tracking perform virtually identically. The algorithms using scalar tracking loops perform worse in comparison. However, all the architectures yield comparable performance when the C/N_0 ratio is below 29 dB-Hz.
机译:本文对紧密耦合和深度集成进行了比较分析。分析了三种深度集成和两种紧密耦合的体系结构。使用相同坡度的惯性测量单元,卫星星座和GPS信号处理技术(即,相同的鉴别器,相干积分时间和C / N_0比估计器)执行不同架构的分析。研究了体系结构的三个方面。第一个是通过紧密耦合上的深度集成提供的总体性能改进。第二个是使用联合过滤体系结构而不是使用单个集中式过滤器的效果。分析的第三方面是在有矢量跟踪和无矢量跟踪的情况下算法的性能。分析表明,具有矢量跟踪的体系结构实际上具有相同的性能。使用标量跟踪循环的算法在比较中表现较差。但是,当C / N_0比率低于29 dB-Hz时,所有架构均可产生可比的性能。

著录项

  • 来源
    《Navigation》 |2013年第3期|159-178|共20页
  • 作者单位

    NTA, Inc. Huntsville, Alabama;

    Auburn University;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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