芯片组和手机解决方案

In this hour-long session, Spirent and SwiftLabs will share insight into the decisions and processes behind the integration of additional signals into a positioning solution.

许多现代应用和设备都需要依赖持续、精确的GNSS接收才能实现各种关键功能。然而，都市环境对GNSS信号的接收构成了巨大的挑战，例如信号遮挡和多径等，而这些因素可能对接收机的性能产生影响。传统的测试方法，例如真实天空测试、记录与回放，以及静态建模等，已经不足以应对今天的各类GNSS依存应用，致使诸多潜在问题只有在真实世界场景中才会暴露出来。

GNSS record & playback systems (RPS) have become essential in professional GNSS testbeds, enabling developers to bring the infinite circumstances of the real-world signal environment into the lab. This offers advantages over live signal field testing including better control, repeatability, cost-effectiveness, and faster time to market. While not a complete substitute for simulation or field testing, RPS provides a combination of realism and repeatability ideal for verification. From simple beginnings, the technology has evolved significantly to meet the demands of emerging use cases:

This case study highlights research from the UK’s Defence Science and Technology Laboratory (Dstl) and the University of Bath on monitoring space weather effects on GPS/GNSS through innovative use of smartphone technology. Space weather, including ionospheric scintillation, can pose a serious challenge to GPS/GNSS applications by introducing errors and potential outages in positioning, navigation, and timing (PNT). When GPS/GNSS signals travel through the ionosphere, they experience disturbances that can lead to reduced accuracy and signal integrity. For critical civilian applications—such as aviation, maritime navigation, and telecommunications—these disruptions can create delays, elevate safety concerns, and increase costs. As GPS/GNSS dependence continues to grow, addressing the impacts of ionospheric delay becomes essential to secure reliable navigation and timing.