Multi-sensor data collection and/or processing

The subject matter disclosed herein relates to a multi-sensor measurement processing unit, comprising a processor, one or more sensors coupled to the processor and a wireless interface unit coupled to the processor, wherein the wireless interface unit is adapted to receive measurement information from an external sensor via a wireless interconnect and to communicate with a device including another multi-sensor measurement processing unit, and wherein said processor is further adapted to estimate one or more navigational states based on said measurement information.