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首页> 外文会议>International technical meeting of the Satellite Division of the Institute of Navigation >Navigation Enabler for Single Satellite Vehicle
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Navigation Enabler for Single Satellite Vehicle

机译：单卫星车导航启动器

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All previous pre-launch verification of a GNSS satellitevehicle(SV) involving actual receivers is limited to static,tracking-only tests due to the receiver’s inability to form aPosition, Velocity and Time (PVT) solution while the SVis still on the ground. These tests are consideredinadequate in revealing any issues that manifest onlywhen PVT solutions can be formed in a dynamicenvironment. Additionally, with the growing number ofnew GNSS systems being developed and new rangingsignals being introduced into existing systems, it is ofgreat interest to the GNSS community to verify theinteroperability between receivers and a full constellationof SVs in space while the SV is still in the developmentstage, as it can be cost prohibitive and sometimesimpossible to fix any implementation issues post-launch.Navigation Enabler for Single SV(NESS)1 is a novelprocess invented to address this need by producing avirtual constellation of GNSS signals with whichreceivers can navigate in real-time, using actual signals(s)transmitted by a single SV (or equivalent engineeringmodel) under laboratory test conditions. By leveraging acommercial-off-the-shelf (COTS) RF recording andplayback system, NESS processes and combines multipleRF recording segments from a single SV into a newrecording which appears exactly as a multitude of signalsfrom an entire constellation in space. A PVT solution canthen be obtained when this new recording is played backin real time to an ordinary receiver.This paper first provides an overview of the NESSprocess, its potential applications and benefits, and thendescribes how NESS will play a critical role indemonstrating the backward-compatibility of the GPS ⅢSV, which implements a new signal combining methodcalled Majority Vote due to the addition of the civil L1Csignal. The objective of the demonstration is to show thatlegacy receivers do not suffer any performancedegradation while navigating with signals transmitted byGPS Ⅲ SVs, which are still under development. Theequipment setup and technical challenges for collectingand processing signals from the actual SV hardware aredescribed, followed by a discussion of the preliminaryresults.
机译：以前所有GNSS卫星的发射前验证 涉及实际接收者的车辆仅限于静态， 由于接收方无法形成仅跟踪的测试 SV时的位置，速度和时间（PVT）解决方案 仍然在地面上。这些测试被认为 不足以揭示仅表现出的任何问题 何时可以动态形成PVT解决方案 环境。此外，随着越来越多的 正在开发新的GNSS系统和新的测距系统 信号被引入到现有系统中 GNSS社区非常有兴趣验证 接收器和完整星座之间的互操作性 SV仍在开发中时，太空中的SV数量 阶段，因为这可能会导致成本过高，有时甚至 发布后无法解决任何实施问题。 单个SV（NESS）1的导航启动器是一种新颖的 为了产生这种需求而发明的方法 GNSS信号的虚拟星座与 接收器可以使用实际信号进行实时导航 由单个SV（或等效工程）传输 模型）在实验室测试条件下。通过利用 商用现货（COTS）RF记录和 回放系统，NESS处理并合并了多个 从单个SV到新的RF记录段 完全以多种信号形式出现的记录 来自整个太空星座。 PVT解决方案可以 然后在播放此新录音时获得 实时传送给普通接收器。 本文首先提供了NESS的概述 过程，其潜在的应用和收益，然后 描述了NESS将如何在以下方面发挥关键作用 证明了GPSⅢ的向后兼容性 SV，它实现了一种新的信号合并方法 由于增加了民用L1C而被称为多数投票 信号。演示的目的是表明 遗留接收器没有任何性能 导航时传输的信号质量下降 GPSⅢSV，仍在开发中。这 设备设置和收集方面的技术挑战 来自实际SV硬件的处理信号是 描述，然后讨论初步 结果。

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