Geo-RelNAV® is a unique navigation system that provides relative navigation information between moving platforms. Information computed by the system includes values such as relative velocity (closure rate) and relative orientation. This information can be used for applications including autonomous aerial refueling, autonomous shipboard landing, vehicle platooning and UAV swarming.The system natively provides solutions in the correct, non-inertial reference frame. Solutions are available via serial and/or Ethernet (both TCP and UDP) providing convenient input to external systems as well as the tools for analysis engineers to monitor the data in real-time using standard monitoring and recording tools. Geo-RelNAV® provides R-TSPI in different frames, including body-frame, local navigation frame (wander-azimuth) and earth-fixed frame, as well as transferring the solution to arbitrary points of interest on the platform.