Decreto che instituisce in ogni capoluogo di circondario un Comizio agrario per l'utilità e l'incremento dell'agricoltura - 23 dicembre 1866, 22 giugno 1879 e 3 aprile 1884 n. 3452 e 4957 (serie 2), n. 2200 (serie 3) / Italia

• Record Nr.: UNINA990001676370403321
• Autore: Italia
• Pubbl/distr/stampa: Torino : Stamp. Gazzetta del Popolo, 1884
• Descrizione fisica: 11 p. ; 16 cm
• Disciplina: 343.076
• Locazione: FAGBC
• Collocazione: 60 340 C 177
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

EW 105 : space electronic warfare / / David L. Adamy

• Record Nr.: UNINA9910828734403321
• Autore: Adamy David
• Pubbl/distr/stampa: Norwood, Massachusetts : , : Artech House, , [2021]; ©2021
• ISBN: 1-5231-4579-X; 1-63081-835-6
• Descrizione fisica: 1 online resource (247 pages)
• Collana: Artech House electronic warfare library
• Disciplina: 623.043
• Soggetti: Electronics in military engineering
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Machine generated contents note: ; 1. Introduction -- ; 1.1. Orbital Relationships -- ; 1.2. Book Flow -- ; 1.3. History of Signal Intelligence Satellite Programs -- ; 1.4. A Note about Orbital Calculations in This Book -- ; 2. Spherical Trigonometry -- ; 2.1. Plane Trigonometry -- ; 2.1.1. The Law of Sines -- ; 2.1.2. The Law of Cosines for Sides -- ; 2.1.3. The Law of Cosines for Angles -- ; 2.1.4. Right Plane Triangle -- ; 2.2. The Spherical Triangle -- ; 2.3. Trigonometric Relationships in Any Spherical Triangle -- ; 2.3.1. Law of Sines for Spherical Triangles -- ; 2.3.2. Law or Cosines tor Sides -- ; 2.3.3. Law of Cosines for Angles -- ; 2.3.4. The Right Spherical Triangle -- ; 2.3.5. Napier's Rules -- ; 2.4. Examples of Plane and Spherical Triangles Used in Problems -- ; 3. Orbit Mechanics -- ; 3.1. Elements of an Elliptical Orbit -- ; 3.2. Relationship Between the Size of an Orbit and Its Period -- ; 3.3. SVP -- ; 3.4. An Earth Surface Location -- ; 3.5. The Propagation Distance -- ; 3.6. Earth Traces -- ; 3.6.1. Satellite Earth Trace -- ; 3.6.2. Polar Orbit Earth Traces -- ; 3.6.3. Synchronous Satellite Earth Traces -- ; 3.7. Location of an EW Threat -- ; 3.7.1. Calculating the Look Angles -- ; 3.7.2. Calculating the Azimuth to the Threat -- ; 3.7.3. Calculating Range and Elevation to the Threat Location -- ; 3.8. Calculating the Distance to the Horizon -- ; 3.8.1. Horizon Distances for Circular Orbits -- ; 4. Radio Propagation -- ; 4.1. Introduction -- ; 4.2. One-Way Link -- ; 4.3. Propagation Loss Models -- ; 4.3.1. LOS Propagation ; -- ; 4.3.2. Two-Ray Propagation -- ; 4.3.3. Minimum Antenna Height for Two-Ray Propagation -- ; 4.3.4. A Note about Very Low Antennas -- ; 4.3.5. Fresnel Zone -- ; 4.3.6. Complex Reflection Environment -- ; 4.3.7. KED -- ; 4.3.8. Atmospheric Loss -- ; 4.3.9. Rain and Fog Attenuation -- ; 5. Radio Propagation In Space -- ; 5.1. LOS Loss -- ; 5.1.1. Atmospheric Loss -- ; 5.2. Antenna Misalignment -- ; 5.3. Polarization Loss -- ; 5.4. Rain Loss -- ; 6. Satellite Links -- ; 6.1. Link Geometry -- ; 6.1.1. Looking Down -- ; 6.1.2. Plug in Some Orbit Numbers -- ; 6.1.3. Looking Up -- ; 6.2. Uplinks -- ; 6.2.1. Command Links -- ; 6.2.2. Intercept Links -- ; 6.3. Downlinks -- ; 6.3.1. Telemetry Link -- ; 6.3.2. Data Link -- ; 6.3.3. Links to Data Users -- ; 6.3.4. Jamming Links -- ; 6.4. Hostile Links -- ; 7. Link Vulnerability To Ew -- ; 7.1. Satellite Vulnerability -- ; 7.1.1. Space-Related Link Losses -- ; 7.1.2. Intercept -- ; 7.1.3. Spoofing -- ; 7.1.4. Jamming -- ; 7.1.5. Problems Worked in This Chapter -- ; 7.2. Downlink Intercept -- ; 7.2.1. Geocentric Angle from the Satellite to the Intercept Site -- ; 7.2.2. Range from the Satellite to the Intercept Site -- ; 7.2.3. Is the Satellite Above the Horizon from the Intercept Site? -- ; 7.2.4. How Strong Is the Downlink Signal at the Intercept Site -- ; 7.2.5. Intercept with Directional Antennas -- ; 7.2.6. Angles Relative to the Ground Control Station -- ; 7.2.7. Angles Relative to the Hostile Intercept Site -- ; 7.2.8. Received Signal at the Intercept Site -- ; 7.2.9. What Is the Quality of the Intercepted Downlink Signal? -- ; 7.3. Intercepting Uplinks -- ; 7.4. Jamming Downlinks -- ; 7.4.1. The Satellite Downlink -- ; 7.4.2. The Jammer Link -- ; 7.4.3. The J/S Formula -- ; 7.5. Jamming Satellite Uplinks -- ; 7.5.1. The Jamming Link -- ; 7.5.2. Jamming Link Loss -- ; 7.5.3. Gain of 4-m Jamming Antenna at 5 GHz -- ; 7.5.4. Jammer ERP -- ; 7.5.5. The Satellite Uplink -- ; 7.5.6. Gain of 2-m Uplink Transmitter Antenna -- ; 7.5.7. Uplink ERP -- ; 7.5.8. Uplink Loss -- ; 7.5.9. Gain and Bandwidth of the Uplink Receiving Antenna on the Satellite -- ; 7.5.10. Antenna 3-dB Beamwidth -- ; 7.5.11. Offset of the Jammer from the Downlink Receiving Antenna -- ; 7.5.12. The J/S -- ; 7.6. Electronic Protection of Satellite Links -- ; 7.6.1. Attacks on Links -- ; 7.6.2. Protection Against Jamming -- ; 8. Duration And Frequency Of Observations -- ; 8.1. Calculating the Distance to the Horizon -- ; 8.2. Horizon Distances for Circular Orbits -- ; 8.3. Calculating the Duration of Target Availability from a Satellite -- ; 8.3.1. Geocentric Viewing Angle -- ; 8.3.2. Time During Which a Satellite Can See a Point on the Earth -- ; 8.3.3. The Impact of the Movement of the Earth -- ; 8.3.4. Viewing Time Formula -- ; 8.4. Doppler Shift in Satellite Link -- ; 8.4.1. Doppler Shift Formula -- ; 8.4.2. Receiving Site Velocity -- ; 8.4.3. Satellite Velocity -- ; 8.4.4. General Formula for Maximum Doppler Shift -- ; 8.4.5. General Formula for the Doppler Shift -- ; 9. Intercept From Space -- ; 9.1. Intercept of Radar Signal from Low-Earth Satellite -- ; 9.1.1. Link Loss -- ; 9.1.2. LOS Loss -- ; 9.1.3. Atmospheric and Rain Loss -- ; 9.1.4. Can the Satellite Payload Receive the Signal? -- ; 9.1.5. Receiver Sensitivity -- ; 9.1.6. Link Margin -- ; 9.1.7. Could the Satellite Receive the Signal from Its Horizon? -- ; 9.1.8. How Long Will the Satellite See the Signal? -- ; 9.2. Horizon Plot on the Earth -- ; 9.3. Intercept of the Earth Surface Target Using a Narrow-Beam Receiving Antenna -- ; 9.3.1. Antenna Pointing -- ; 9.3.2. Intercept Link Equation -- ; 9.3.3. Link Losses -- ; 9.3.4. Intercept from the Horizon -- ; 9.4. Intercept from the Synchronous Satellite -- ; 9.4.1. With the Satellite on the Horizon -- ; 9.4.2. With the Satellite Directly Overhead -- ; 10. Jamming From Space -- ; 10.1. Jamming of a Ground Signal from a Satellite -- ; 10.2. Jamming from a Satellite -- ; 10.3. Jamming of a Communications Network -- ; 10.3.1. The Network -- ; 10.3.2. Link ; Equations -- ; 10.3.3. J/S -- ; 10.4. Jamming a Microwave Digital Data Link -- ; 10.5. Jamming of a Ground Radar from Space -- ; 10.5.1. Radar Jamming from a Satellite -- ; 10.5.2. The Jammed Radar and Its Target -- ; 10.5.3. The Jammer -- ; 10.5.4. The Jamming Equation -- ; 10.5.5. The Jamming Adequacy -- ; 10.5.6. Protecting an Asset with Low Radar Cross-Section -- ; 10.5.7. Duration of Jamming -- ; A. FORMULAS FROM SIGNAL INTELLIGENCE AND EW -- ; A.1. Intercept Formulas -- ; A.1.1. Successful Intercept -- ; A.1.2. The Intercept Link Equation -- ; A.1.3. Received Signal Quality -- ; A.2. Communication Jamming -- ; A.2.1. Successful Communications Jamming -- ; A.2.2. Communications J/S -- ; A.2.3. Communications EP -- ; A.3. Radar Jamming -- ; A.3.1. Successful Radar Jamming -- ; A.3.2. Self-Protection Jamming -- ; A.3.3. Stand-Off Jamming -- ; A.3.4. Required J/S -- ; A.3.5. Radar EP -- ; B. Important Numbers For Space EW -- ; C. Decibel Math -- ; C.1. Decibel Numbers -- ; C.2. Conversion to Decibel Form -- ; C.3. Absolute Values in Decibel Form -- ; C.4. Decibel Forms of Equations -- ; C.5. Quick Conversions to Decibel Values.

Variational, geometric, and level set methods in computer vision : Third International Workshop, VLSM 2005, Beijing, China, October 16, 2005 : proceedings / / Nikos Paragios ... [et al.] (eds.)

• Record Nr.: UNINA9910483821303321
• Pubbl/distr/stampa: Berlin, : Springer, c2005
• Edizione: [1st ed. 2005.]
• Descrizione fisica: 1 online resource (XII, 372 p.)
• Collana: Lecture notes in computer science, , 0302-9743 ; ; 3752
• Classificazione: 54.74
• Altri autori (Persone): ParagiosNikos
• Disciplina: 006.6; 006.37
• Soggetti: Computer vision - Mathematics; Computer vision - Methodology; Image processing - Digital techniques
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: A Study of Non-smooth Convex Flow Decomposition -- Denoising Tensors via Lie Group Flows -- Nonlinear Inverse Scale Space Methods ; for Image Restoration -- Towards PDE-Based Image Compression -- Color Image Deblurring with Impulsive Noise -- Using an Oriented PDE to Repair Image Textures -- Image Cartoon-Texture Decomposition and Feature Selection Using the Total Variation Regularized L 1 Functional -- Structure-Texture Decomposition by a TV-Gabor Model -- From Inpainting to Active Contours -- Sobolev Active Contours -- Advances in Variational Image Segmentation Using AM-FM Models: Regularized Demodulation and Probabilistic Cue Integration -- Entropy Controlled Gauss-Markov Random Measure Field Models for Early Vision -- Global Minimization of the Active Contour Model with TV-Inpainting and Two-Phase Denoising -- Combined Geometric-Texture Image Classification -- Heuristically Driven Front Propagation for Geodesic Paths Extraction -- Trimap Segmentation for Fast and User-Friendly Alpha Matting -- Uncertainty-Driven Non-parametric Knowledge-Based Segmentation: The Corpus Callosum Case -- Dynamical Statistical Shape Priors for Level Set Based Sequence Segmentation -- Non-rigid Shape Comparison of Implicitly-Defined Curves -- Incorporating Rigid Structures in Non-rigid Registration Using Triangular B-Splines -- Geodesic Image Interpolation: Parameterizing and Interpolating Spatiotemporal Images -- A Variational Approach for Object Contour Tracking -- Implicit Free-Form-Deformations for Multi-frame Segmentation and Tracking -- A Surface Reconstruction Method for Highly Noisy Point Clouds -- A C 1 Globally Interpolatory Spline of Arbitrary Topology -- Solving PDEs on Manifolds with Global Conformal Parametriazation -- Fast Marching Method for Generic Shape from Shading -- A Gradient Descent Procedure for Variational Dynamic Surface Problems with Constraints -- Regularization of Mappings Between Implicit Manifolds of Arbitrary Dimension and Codimension -- Lens Distortion Calibration Using Level Sets.
• Sommario/riassunto: Mathematical methods has been a dominant research path in computational vision leading to a number of areas like ?ltering, segmentation, motion analysis and stereo reconstruction. Within such a branch visual perception tasks can either be addressed through the introduction of application-driven geometric ?ows or through the minimization of problem-driven cost functions where their lowest potential corresponds to image understanding. The 3rd IEEE Workshop on Variational, Geometric and Level Set Methods focused on these novel mathematical techniques and their applications to c- puter vision problems. To this end, from a substantial number of submissions, 30 high-quality papers were selected after a fully blind review process covering a large spectrum of computer-aided visual understanding of the environment. The papers are organized into four thematic areas: (i) Image Filtering and Reconstruction, (ii) Segmentation and Grouping, (iii) Registration and Motion Analysis and (iiii) 3D and Reconstruction. In the ?rst area solutions to image enhancement, inpainting and compression are presented, while more advanced applications like model-free and model-based segmentation are presented in the segmentation area. Registration of curves and images as well as multi-frame segmentation and tracking are part of the motion understanding track, while - troducing computationalprocessesinmanifolds,shapefromshading,calibration and stereo reconstruction are part of the 3D track. We hope that the material presented in the proceedings exceeds your exp- tations and will in?uence your research directions in the future. We would like to acknowledge the support of the Imaging and Visualization Department of Siemens Corporate Research for sponsoring the Best Student Paper Award.