Message encoding method - enhancement to laser beam riding missile guidance

摘要

A missile guidance system comprises laser beam projection means operable to project a laser beam comprising a scanned projection of laser beam pulses. First and second pulses are scanned in orthogonal directions relative to each other, tracing grid lines in first and second directions. Third laser beam pulses are selectively projected in time intervals interposed between first and second laser pulses. The third pulses may be Information pulses which encode further information for receipt by a missile, such as an angle of roll of a missile launch platform from which the beams are emitted.