The ASM-N-6 Omar was a short-range air-to-surface missile developed for and evaluated by the United States Navy in the early 1950s.
[3] An optical beam riding guidance system was developed for use with Omar; the launching aircraft would project an intense beam of light at the target, and aft-facing sensors on the missile would track the light source, keeping the missile on course to its target.
[2] The Omar shared some parts of its control system with the AAM-N-7 Sidewinder air-to-air missile.
[4] The following year a modification of the seeker head, nicknamed "Ramo" (for 'reverse Omar') was tested, evaluating a frequency modulation system to encode the light beam to refine the guidance.
This proved no more effective, and the system was cancelled entirely, although some details of the frequency encoding were used in the development of the SAM-N-7 Terrier program.