Techniques for generation of control and guidance signals derived from optical fields

by H. Hemami

Publisher: National Aeronautics and Space Administration; for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. in [Washington]

Written in English
Published: Pages: 64 Downloads: 574
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Edition Notes

Statementby H. Hemami, M. B. Kuhner, and L. T. Bashark.
SeriesNASA contractor report, NASA CR-1443, NASA contractor report ;, NASA CR-1443.
ContributionsKuhner, M. B., joint author., Bashark, L. T., joint author., Ohio State University., Langley Research Center.
LC ClassificationsTL521.3.C6 A3 no. 1443, TL3255 A3 no. 1443
The Physical Object
Paginationx, 64 p.
Number of Pages64
ID Numbers
Open LibraryOL5738265M
LC Control Number70604377

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Techniques for generation of control and guidance signals derived from optical fields by H. Hemami Download PDF EPUB FB2

Techniques for generation of control and guidance signals derived from optical fields, part 2. By S. Gardner, H. Hemami and R. Mcghee. Abstract. The development is reported of a high resolution technique for the detection and identification of landmarks from spacecraft optical fields.

By making use of nonlinear regression analysis, a Author: S. Gardner, H. Hemami and R. Mcghee. Techniques for generation of control and guidance signals derived from optical fields: Part II / By H.

Hemami, S. Gardner, R. McGhee, Langley Research Center., Ohio. The first is optical fiber shape sensing, which acts over meters of fiber, and the second is distributed acoustic sensing (DAS), which acts over many kilometers of fiber. Both methods rely on elastic optical backscattering signals, and in both methods significant improvements have been made possible with enhanced sensing fibers and : Paul Westbrook.

signals by high power transponder signals of the aircraft. The new idea presented in this paper consists in a reduction of the electric bandwidth by replacing the electronical heterodyning for the correlation of the measuring and the reference signal by an optical correlation of scattered light and reference light beams.

Fig. 2 shows three examples of periodic and quasiperiodic complex optical fields. In these examples, we consider that the radius of the circular pupil R equals 8 / ρ Q=6 and p=2, the modulus, phase, and Fourier spectrum of the periodic field are shown in Fig.

2(a), (d), and (g), respectively. Similarly, for Q=6 and p=3, the resulting modulus, phase, and Fourier spectrum of s (r, θ Cited by: 5.

Nonlinear Chaotic Signals Generation and Transmission Within an Optical Fiber Communication 54 | Page The chaotic signals can be used to generate information of binary codes where the encoding and decoding of data can be performed via a TDMA system. applications in the processing of optical and electrical signals, where some type of geometry can be required in the final signal.

Also, an extension of the mathematical basis has been included in a recent development [12]. In the present work we are interested in showing a method for the generation of fractal signals using the procedure previously.

These weapons are represented by the Spike MR or LR and Javelin – Techniques for generation of control and guidance signals derived from optical fields book represent this weapon class, using ‘fire and forget’ electro-optical guidance.

By the early s Spike gained a head start over Javelin, selected by a number of European armies while Javelin was focused mainly on the U.S. military.

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The field of photonics covers the techniques and scientific knowledge which can be applied to the generation, propogation, control, amplification, detection, storage and processing of signals of the optical spectrum, as well as their technologies and derived uses.5/5(1).

This third edition of the Field Guide to Infrared Systems, Detectors, and FPAs is devoted to fundamental background issues for optical detection processes. It compares the characteristics of cooled and uncooled detectors with an emphasis on spectral and blackbody responsivity, detectivity, and the noise mechanisms related to optical detection.

design a coded system for such fiber-optical channels. Finally, the joint probability density function of the received amplitudes and phases of a dispersion-managed fiber-optical channel is derived in [Paper D].

This analysis is performed for dual-polarization transmission with. Generation and Photonic Guidance of Multi-Octave Optical-Frequency Combs F. Couny,1 F. Benabid,1* P. Roberts,2 P. Light,1 M. Raymer3 Ultrabroad coherent comb-like optical spectra spanning several octaves are a chief ingredient in the emerging field of attoscience.

We demonstrate generation and guidance of a three-octave. sound waves, etc. DSP is the mathematics, the algorithms, and the techniques used to manipulate these signals after they have been converted into a digital form. This includes a wide variety of goals, such as: enhancement of visual images, recognition and generation of speech.

Ultrabroad coherent comb-like optical spectra spanning several octaves are a chief ingredient in the emerging field of attoscience.

We demonstrate generation and guidance of a three-octave. The scanning electron microscope (SEM) uses a focused beam of high-energy electrons to generate a variety of signals at the surface of solid specimens.

The signals that derive from electron-sample interactions reveal information about the sample including external morphology (texture), chemical composition, and crystalline structure and orientation of materials making up the.

Optical signals can be multiplexed in t sp polarisat46, angular momentum 47 and wavelen48 domains, and optical technologies may Cited by: 8. Imaging in Dermatology covers a large number of topics in dermatological imaging, the use of lasers in dermatology studies, and the implications of using these technologies in research.

Written by the experts working in these exciting fields, the book explicitly addresses not only current applications of nanotechnology, but also discusses. The Journal of Biomedical Optics (JBO) is an open access journal that publishes peer-reviewed papers on the use of novel optical systems and techniques for improved health care and biomedical research.

Langley Research Center Langley Research Center Hampton, Va États-Unis. National aeronautics and space administration Langley research center Langley Research Center (Hampton).

In this paper, a new all-optical signal regeneration technique is developed by using phase sensitive amplification and designed optical phase locked signal mechanism.

The developed all-optical signal regeneration technique is tested for different 10 Gb/s Differential Phase Shift Keying degraded signals. It is determined that the designed all Cited by: 2. Start studying Chapter 7. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Monday 14 May AM - AM Location: Europa 1 to Welcome and Introductions to A.E. Conrady Award presented to Philip J. Rogers, VNF Ltd. (United Kingdom) to (after Plenary presentations): Michael Kidger Memorial Scholarship Award. Summary. Nonlinear Optical Systems: Principles, Phenomena, and Advanced Signal Processing is a simplified overview of the evolution of technology associated with nonlinear systems and advanced signal processing.

This book’s coverage ranges from fundamentals to phenomena to the most cutting-edge aspects of systems for next-generation biomedical monitoring and nonlinear optical transmission. Introduction. Bioelectrical signals are mediated by the steady-state electrical properties of cells and tissues.

Despite much fascinating data on the role of endogenous bioelectric signals controlling limb and spinal cord regeneration [1–3], cell and embryonic polarity [4–6], growth control [7, 8], and migration guidance of numerous cell types [], the field as a whole is unknown to several Cited by: control over the probe position, but in addition to the resolution limit imposed by the acoustic wavelength, each acousto-optical measurement is limited to a single target.

Thus, utilizing these techniques for imaging or laser nanosurgery where the investigation of a largeCited by:   Importantly, in a number of cases, it has been shown that the patterning change produced by a specific bioelectric signal (e.g., eye induction, neoplastic transformation, left-right asymmetry generation) is dependent only on the voltage itself, not on the genetic identity of the channel or the chemical species of the ion involved; in most cases Cited by: Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target.

The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg).

The Global Positioning System (GPS), originally NAVSTAR GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force.

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Which of the following techniques or studies would be most useful in testing the hypothesis that "The fate of the cells in an early fish embryo is irrevocably determined". Monitoring gene expression in the cells and looking for differences in different regions b. Transplanting cells from one region to another.

General interference law for nonstationary, separable optical fields Article in Journal of the Optical Society of America A 26(9) October with 11 Reads How we measure 'reads'.

The demonstrated techniques are not limited to fibre lasers, and can be extended to the study of other las optical signals 67 and partially Author: Srikanth Sugavanam, Morteza Kamalian Kopae, Junsong Peng, Jaroslaw E.

Prilepsky, Sergei K. Turitsyn.Model-Based Design is a process that enables fast and cost-effective development of dynamic systems, including control systems, signal processing, and communication systems. In Model-Based Design, a system model is at the center of the development process, from requirements development through design, implementation, and testing.