A dedicated hardware GNSS receiver plus antenna results in a complex system architecture. An integrated supervision of the receiver performance is not possible.
The PATHFINDER Software Receiver is integrated into the central sensor fusion ECU. This approach leads to a simplified architecture and enables an integrated safety concept.
PATHFINDER baseband processing. As we were designing all signal processing from scratch we were including GNSS signal tracking under multipath - explicit code and carrier models that generate the correspoding error budget as probability density.
Function developers will be notified by PATHFINDER if multipath occurs, how much the influence is and what this means for the accuracy and the integrity of the vehicle state estimation.
Additionally, the integrated safety layer can recover hardware defects for the antenna and frontend in real time. No redundant antenna or receiver design is needed. This keeps costs down and architecture simple.
In short, PATHFINDER integrates all safety-relevant aspects of vehicle localization. All steps of signal processing are carefully revised so as not lose or falsify any information relevant for the estimating a valid error budget. The PATHFINDER module will be interfaced by an API tailored to your needs and requirements; as we are targeting the implementation on your ECU or ADAS processor we are carefully developing according to automotive standards and we are also going to comply with ISO 26262.