Title

Overview Of Creol Programs In Laser Radar

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-tonoise 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 1064nm 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, 1064nm laser. Finally, we have designed and are beginning to implement an experiment to show that imaging through a turbulent medium can be achieved.

Publication Date

10-15-1993

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

1936

Number of Pages

147-156

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.157100

Socpus ID

85076261606 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85076261606

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