Coherent Optical Adaptive Techniques (COAT)
Quarterly technical rept. no. 1, 27 Mar-26 Jun 1973
HUGHES RESEARCH LABS MALIBU CA
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Coherent optical adaptive techniques COAT can be applied to overcome the deleterious effects of atmospheric turbulence. The report covers the design phase of an experimental program to design, fabricate and evaluate an eighteen-element, self-adaptive, optical phased array. In addition, a computer simulation program developed to aid in system design and performance prediction is also described. Results are presented on preliminary experiments performed with an existing seven-element COAT system. Further experiments were performed with different piezoelectric ceramic phase-shifter configurations and with improved servo control electronic systems and are described here. Techniques for offset pointing of the phased array are discussed. A flexible phasor matrix structure is described in which radiating array patterns can be easily changed. Atmospheric characterization measurements performed on the 94 meter test range are described. The design of a dynamic multiglint target system is given.
- Optical Detection and Detectors