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Sim3D Multipath Simulation Software

Sim3D builds detailed 3D GNSS environments with proven realism for advanced multipath and obscuration testing, using PNT X and GSS7000 simulators.

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  • Compatible hardware

    PNT X, GSS7000

  • Use cases

    3D Terrain Modeling, PNT Scenarios

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Highlights

Sim3D uses deterministic ray tracing within synthetic 3D environments to simulate real-time GNSS multipath and obscuration effects under controlled, repeatable conditions.

Multipath and signal simulation

  • Simulate up to 31 multipath signals per line of sight (LOS) with up to 6 reflections per signal
  • Manipulate signal code, carrier, and power based on interaction with the 3D environment
  • Support all constellations, frequencies, and codes currently simulated by Keysight
  • Run both static and dynamic scenarios with dynamic trajectory generation

3D environment modeling

  • Generate custom 3D models or import externally created models and objects
  • Access multiple pre-built 3D environments
  • Support scene sizes up to 5 km² (or larger for highway scenarios)
  • Factor building and object material properties into signal calculations

Control and configuration

  • Toggle obscuration and multipath modes independently
  • Set the number of reflections per multipath signal
  • Filter multipath signals by user-defined delay and power ranges

Analysis and integration

  • Visualize multipath direction of arrival
  • Generate GNSS reception heat maps
  • Import user-defined antenna patterns (RHCP/LHCP)
  • Model indoor signal propagation
  • Support over-the-air testing in anechoic and zoned chambers

Services and support