Our work has emphasized analog optical processing for three levels of multitarget tracking: target detection, track initiation and target tracking. New algorithms and new optical processing architectures have resulted and initial quantitative results have been obtained for each phase of the work. A new acousto-optic implementation of our sub-pixel target detection algorithm was devised and tested. This involved a new algorithm and architecture that achieves image registration, interpolation and subtraction. This technique is thus suitable for general image registration applications also. A 2-D Hough transform optical processors is used for track initiation. It allows accumulation of target measurements until sufficient confidence has been established that a target track exists. It provides position and velocity estimates for each target and predictions of the next vector location of each target. A new threshold Hough transform provides improved performance and reduced false alarms in noise. Very impressive results from many multiple targets were obtained. This work is also suitable for general object feature extraction and product inspection applications. We devised a completely new realization of the Joint Probabilistic Data Association Algorithm for multitarget tracking and a most attractive new acousto-optic architecture to achieve this. This also has more general use in hypothesis testing. Finally, a new analogy neural net algorithm and architecture was formulated, an optical processor to implement it was described and initial simulations of it were obtained. (fr).

Industrial Applications for Optical Data Processing and Holography discusses modern optics applications in the industrial setting. Holography and speckle metrology are emphasized through numerous examples where interferometry has been applied to gage displacements and velocities in solids and in fluids. Other detailed discussions of optics applications include fringe interpretation, pattern recognition, and the fine points of recording optical disturbances. New, successful techniques are carefully examined to analyze the aspects responsible for their success. The book also features an extensive index that will be indispensable for helping stress analysts locate specific applications. Its detailed reference lists will provide a solid reference resource for engineers and designers seeking additional information.

Fiber Optics Vocabulary Development In 1979, the National Communications System published Technical InfonnationBulle tin TB 79-1, Vocabulary for Fiber Optics and Lightwave Communications, written by this author. Based on a draft prepared by this author, the National Communications System published Federal Standard FED-STD-1037, Glossary of Telecommunications Terms, in 1980 with no fiber optics tenns. In 1981, the first edition of this dictionary was published under the title Fiber Optics and Lightwave Communications Standard Dictionary. In 1982, the then National Bureau of Standards, now the National Institute of Standards and Technology, published NBS Handbook 140, Optical Waveguide Communications Glossary, which was also published by the General Services Admin istration as PB82-166257 under the same title. Also in 1982, Dynamic Systems, Inc. , Fiberoptic Sensor Technology Handbook, co-authored and edited by published the this author, with an extensive Fiberoptic Sensors Glossary. In 1989, the handbook was republished by Optical Technologies, Inc. It contained the same glossary. In 1984, the Institute of Electrical and Electronic Engineers published IEEE Standard 812-1984, Definitions of Terms Relating to Fiber Optics. In 1986, with the assistance of this author, the National Communications System published FED-STD-1037A, Glossary of Telecommunications Terms, with a few fiber optics tenns. In 1988, the Electronics Industries Association issued EIA-440A, Fiber Optic Terminology, based primarily on PB82-166257. The International Electrotechnical Commission then pub lished IEC 731, Optical Communications, Terms and Definitions. In 1989, the second edition of this dictionary was published.

Collects papers presented at the 29th symposium of the European Association of Remote Sensing Laboratories (EARSeL). This book covers such subjects as: earth observation, earthquake monitoring, new trends in GIS and remote sensing software packages, coasts and climate conflicts, forestry, thermal remote sensing and urban remote sensing.

Communications * Standard Dictionary is a comprehensive compilation of terms and definitions used in communications and related fields. Communications is defined as the branch of science and technology concerned with the process of representing, transferring, and interpreting the meaning as signed to data by and among persons, places, or machines. Communication is defined as the transfer of information between a source (trans mitter, light source) and a sink (receiver, photodetector) over one or more chan nels in accordance with a protocol, and in a manner suitable for interpretation or comprehension by the receiver; or as a method or means of conveying informa tion of any kind from one person or place to another. In short, communications is a branch of science and technology, whereas com munication pertains to the actual transfer of information. Thus, the word com munication should be used as a modifier, as in communication center, communi cation deception, and communication line, just as in the field of electronics one speaks of electronic devices and electronic circuits.