Overview of CREOL programs in laser radar

C. Martin Stickley

doi:10.1117/12.157100

15 October 1993 Overview of CREOL programs in laser radar

C. Martin Stickley

Proceedings Volume 1936, Applied Laser Radar Technology; (1993) https://doi.org/10.1117/12.157100
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

This paper summarizes progress toward developing coherent ladar technology using arrays of subapertures for coping with target-induced speckle which can reduce the carrier-to-noise ratio for ladar systems. We have selected an optimum receiver design, developed algorithms for determining how to co-phase the IF signals from the different sub-apertures/receivers, and have begun to test these on a two-aperture, coherent 1064 nm ladar. Computer simulations of the ladar are being developed including partially developed speckle effects from the target. Target speckle has been measured from different materials and at two different wavelengths for bench-marking the computer simulations. We have measured and are developing the theory for the time-dependent optical phase shifts observed from a rough, rotating target. The signal enhancement has been calculated that might be expected for a rough target illuminated by a coherent, 1064 nm laser. Finally, we have designed and are beginning to implement an experiment to show that imaging through a turbulent medium can be achieved.

Citation Download Citation

C. Martin Stickley "Overview of CREOL programs in laser radar", Proc. SPIE 1936, Applied Laser Radar Technology, (15 October 1993); https://doi.org/10.1117/12.157100

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