Sensor array tracking and detection system

摘要

A system is provided for tracking a free-space optical communications beam. The incoming beam is split by a beam splitter (24). One portion of the incoming beam is focused onto a high-speed photodetection (26). Another portion of the incoming beam is passed through a target pattern optical element. A resulting target pattern is formed on a two-dimensional active pixel sensor array. The alignment of the system can be adjusted based on the position of the target pattern on the sensor array.