An innovative sensor concept termed the laser optical transceiver system (LOTS) has been investigated for remotely determining a cooperative vehicle's orientation in pitch, yaw, and roll. Such a system would be useful to support automation of spacecraft rendezvous, station-keeping, and docking. The Phase I effort successfully demonstrated the technical feasibility of this concept with a two-dimensional, laboratory breadboard demonstration.Potential Commercial Application:Applications are in the remote sensing of a cooperative target's orientation with respect to the sensor's frame of reference.STATUS: Project Proceded to Phase II