Sim3D Multipath Simulation Software

Many modern applications and devices rely on continuous, accurate GNSS reception for various critical functions. However, urban environments pose challenges for GNSS reception, such as signal obscuration and multipath, which can impact the receiver's performance. Traditional testing methods like live-sky testing, record and playback, and statistical modeling are no longer sufficient for today's GNSS-dependent applications, leading to potential performance issues in real-world scenarios.

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.