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首页> 外文会议>International technical meeting of the Satellite Division of the Institute of Navigation >SBAS L1/L5 ICDs and Alternatives: Analysis of Multi-GNSS Service Performance Assessment
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SBAS L1/L5 ICDs and Alternatives: Analysis of Multi-GNSS Service Performance Assessment

机译：SBAS L1 / L5 ICD和替代方案：多重GNSS服务绩效评估分析

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The IWG (Interoperability Working Group) was formed bythe different Space-Based Augmentation System (SBAS)service providers to ensure that SBAS systems arecompatible and to plan future enhancements. Nowadays itsmain goal is to contribute to the elaboration of a newstandard able to augment up to 4 GNSS (Global NavigationSatellite System) constellations simultaneously and offeringnew services (aviation oriented) for dual frequency (L1/L5)users. For that purpose, two families of SBAS L1/L5 ICDmodels are currently under consideration in the IWG:1. UDRE (User Differential Range Error) ICD family,aimed at defining a SBAS L1/L5 ICD model assimilar to the current SBAS L1 ICD as feasible.2. DFRE (Double Frequency Range Error) ICDfamily, whose main objective is, based upon asimilar PRN mask as L1, to simplify the number ofmessages and structure as much as possible.This paper provides a summary of the qualitative trade-offperformed between the two aforementioned ICD families inthe frame of EC PROSBAS (Prototyping and Support toStandardization of SBAS L1/L5 Multi-ConstellationReceiver) project related activities. This trade-off includes aqualitative analysis of the vertical Protection Levelperformances achieved by each alternative. Theaforementioned results have already been presented to IWGand IWG feedback has been taken into account in theanalysis.For this trade-off analysis the following strategy has beenadopted:1.Definition of Study cases2.Definition of trade-off criteria3.Definition of scenarios4.Qualitative trade-off of the ICD families5.Critical analysis of the resultsThe main results for each trade-off criterion are presented inthis paper, including a summary of the Vertical ProtectionLevel (VPL) performances achieved for optimistic, nominaland pessimistic cases, as well as for 1 to 4 constellations andwith each ICD family.Further analysis are planned to consolidate and extend thepreliminary conclusions presented in this paper. Theseactivities are part of the EC (European Commission)PROSBAS project.
机译：IWG（互操作性工作组）由 不同的天基增强系统（SBAS） 服务提供商，以确保SBAS系统 兼容并计划未来的增强功能。时至今日 主要目标是为制定新 标准，最多可扩展到4 GNSS（全球导航） 卫星系统星座同时提供 双频（L1 / L5）的新服务（面向航空） 用户。为此，两个家族的SBAS L1 / L5 ICD IWG当前正在考虑以下模型： 1. UDRE（用户差分范围误差）ICD系列， 旨在将SBAS L1 / L5 ICD模型定义为 与目前的SBAS L1 ICD类似。 2. DFRE（双频范围误差）ICD 家庭，其主要目标是基于 与L1类似的PRN掩码，以简化 消息和结构尽可能。 本文提供了定性权衡的摘要 在上述两个ICD系列之间进行 EC PROSBAS的框架（ SBAS L1 / L5多星座的标准化 接收方）项目相关活动。这种权衡包括 纵向保护水平的定性分析 每个替代方案所实现的性能。这 前述结果已经提交给IWG 并且IWG的反馈意见已被考虑在内 分析。 为了进行权衡分析，采用了以下策略 通过： 1.研究案例的定义 2权衡标准的定义 3，场景定义 4. ICD家庭的定性权衡 5，对结果的批判性分析 每个权衡标准的主要结果显示在 本文，包括垂直保护的摘要 达到乐观，名义的水平（VPL）性能 和悲观的情况，以及1到4个星座和 与每个ICD家庭。 计划进一步分析以巩固和扩展 本文提出的初步结论。这些 活动是EC（欧洲委员会）的一部分 PROSBAS项目。

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