GPS/INS Truth Reference System

The GPS/INS truth reference system is comprised of a dual-frequency GPS receiver and a ring-laser gyro.  This high-end system enables centimeter-level positioning accuracy with high levels of availability.  A truth reference system of this nature is crucial when evaluating the performance of automotive grade GPS receiver performance in typical automotive driving environment that include urban canyons and heavy foliage.  AEWL staff can organize field data collections and post-process the data to let you the performance of your GPS system.  Below is an example of showing the accuracy of the truth reference system and an automotive GPS receiver in an urban canyon environment.