Sim3D多径模拟软件

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。

The aim of GNSS testing is to understand how a GNSS-enabled device will perform in the infinite different circumstances of the real world. For this reason, realistic GNSS testing is crucial in the development and validation of positioning, navigation and timing systems that will perform in the hands of users. With the lack of repeatability and error tracing in real world testing, delivering realistic results depends on lab-based GNSS simulation and record & playback technologies. Simulation and record & playback systems represent the state-of-the-art in lab-based testing for GNSS. With enhanced realism and the highest fidelity, the significant benefits of bridging the gap between lab and real-world testing can be realised. Foremost of these is to move more testing away from the field and into the cheaper, faster, and more scientific lab environment.

Developers of connected autonomous vehicles must understand the impact of multipath and obscuration on the GNSS receiver. This blog explores the need for 3D simulation in the research lab.