Over the air GNSS testing using multi-channel generators to create spatially dispersed signals

摘要

The problem of simulating movement of multiple GNSS or regional navigational satellite system satellites across the sky within a test environment is solved by the technology disclosed using a test chamber with a plurality of zones bounded by azimuth and elevation limits, positioning at least one directional antenna in each zone, driving each antenna individually with a GNSS simulator capable of producing multiple positioning signals for a plurality of satellite sources in a single zone, and coordinating among GNSS simulators a simulated orbital movement of the satellite sources from one zone to an adjoining zone to produce changing angles of arrival for the positioning signals during a test. Both methods and systems implement this technology.

主权项

1. A method of simulating angular movement of multiple GNSS or regional navigational satellite system satellites across a sky within a test environment, including:
providing a test chamber with a plurality of zones bounded by azimuth and elevation limits with directional antennas positioned in the test chamber with at least one antenna per active zone; driving the antennas individually with output from one or more GNSS simulators capable of producing multiple positioning signals for a plurality of satellite sources in a single zone; and coordinating among the GNSS simulators a simulated orbital movement of the satellite sources from one zone to an adjoining zone to produce changing angles of arrival for the positioning signals.