Indoor Navigation Using a Software Defined Radio

摘要

Time of Arrival (TOA) observations from local beacon signals can be used to augment and provide a back-up navigation source for GPS signals in a Software Defined Radio (SDR). The addition of inertial sensor inputs to the SDR offers the ability to track down to much lower power levels for both the GPS and TOA signals, effectively deal with multipath, and recover more quickly from signal outages. In this paper, multipath mitigation algorithms that leverage combined TOA and inertial measurements are presented to enhance tracking performance in indoor and urban environments.