Strategy for reflector pattern calculation

let the computer do the work
  • 0.54 MB
  • English

National Aeronautics and Space Administration, For sale by the National Technical Information Service , [Washington, DC], [Springfield, Va
Antennas, Refle
StatementP.T. Lam ... [et al.].
SeriesNASA technical memorandum -- 87137.
ContributionsLam, Peter T. C., United States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15296260M

Get this from a library. Strategy for reflector pattern calculation: let the computer do the work. [Peter T C Lam; United States. National Aeronautics and Space Administration.;].

In your calculation there is a tight coupling between service type, service size and the number of products, it's very hard as it stands to separate them out into modular chunks to apply the strategy pattern. If the calculation system is fixed, then it seems that the strategy pattern is.

The techniques developed for secondary pattern calculation have several applications. These applications are the strategy for calculating reflector antenna patterns and directivity optimization of a reflector antenna with cluster feeds, and reducing the sidelobe level of a reflector antenna by adding auxiliary reflectors.

An innovative analytic strategy for the estimation of the average pattern behavior of reflector antennas when surface deformations are present on the parabolic disc is proposed. For the strategy pattern to make sense, the interface between the core logic and the tax calculation algorithms should be more stable than the individual components.

If it is just as likely that a requirement change will cause the interface to change, then the strategy pattern might actually be a liability. So, the strategy pattern can play a fundamental part in isolating the process above from the specifics of the calculation method and from the specifics of finding a suitable method given an inventory item (so it's already being used twice), but it's just an implementation detail of.

31 ∑ = = + M m j m AF I e m m 1 (θ,φ) (ζ δ) () where Im is the magnitude and δm is the phase of the weighting of the mth element. The normalized array factor is given by f {} AF AF (,) (,) max (,) θφ θφ θφ = () This would be the same as the File Size: KB. Secondary pattern computation of an arbitrarily shaped main reflector.

Strategy for Reflector Pattern Calculation: Let the Computer Do the Work the secondary pattern of. This program accepts from the user the center frequency, focal length and diameter of the parabolic reflector antenna and plot the radiation pattern in both E-plane and H-plane.

I think it will be helpful for those who are interested in studying the effect of these parameters on the radiation pattern shape of the parabolic reflector s: Figu A parabolic reflector antenna with pencil beam pattern In figurea reflector antenna with cosecant squared pattern that has been traditionally designed is represented.

For the design, a part of reflector surface is cut and the cut side is bowed to feed antenna. For the simulation, SUPERNEC antenna simulation program is used. Efficient Computation of Reflector Antenna Aperture Distributions and Far Field Patterns [H.

Steyskal] on *FREE* shipping on qualifying offers. Efficient Computation of Reflector Antenna Aperture Distributions and Far Field Patterns.

Description Strategy for reflector pattern calculation FB2

Reflector antenna radiation patterns are determined by a number of factors, but the most important ones are the radiation pattern of the feed antenna and the shape of the reflector.

Parabolic reflectors have the unique feature that all path lengths from the focal point to the reflector and on to the aperture plane are the same.

Strategy Design Pattern - Explained with a real world example (C#) Strategy Pattern is a Behavioral pattern.

In theory, the Strategy Pattern means: Here is the beauty of Strategy pattern wherein you can change the behavior dynamically (run-time polymorphism, as they say!) Handset class revisited to add a setter method /5(10). Design Patterns in the Real World: Strategy Maybe it would be better if your program was a little more strategic.

Maybe it should choose the best strategy s: 1. The reflector may have difficulty making decisions because in the moment their is the energy to do something and then it is gone. In another moment they are identifying with a workshop they want to take and then that identification fades.

The key for the reflector is becoming wise about the energy that surrounds them. The Strategy pattern is a delagation-based design pattern, and shares some similarities with the Template Method pattern.

However, instead of depending so heavily on inheiritance between a superclass and subclasses to use our target algorithm, we take our algorithm and consider it as a separate object.

This example will be for a parabolic dish reflector with the diameter of the dish D equal to 11 wavelengths. The F/D ratio will be A circular horn antenna will be used as the feed. The maximum antenna gain from the physical aperture is ; the actual gain is dB =so we can conclude that the overall efficiency is 77%.

Download Strategy for reflector pattern calculation EPUB

The 3D. Analysis of Reflector Antennas provides information pertinent to the analysis of reflector-antenna systems. This book provides an understanding of how design data have been and can be derived. Organized into four chapters, this book begins with an overview of the history of focusing reflector-antenna systems characterized by a highly variable Book Edition: 1.

Eliminates large conditional statements. Provides a choice of implementations for the same behavior. Shortcomings Increases the number of objects. All algorithms must use the same Strategy interface. Think twice before implementing the Strategy pattern or any other design pattern to match your requirements.

The following Matlab project contains the source code and Matlab examples used for parabolic reflector radiation pattern. This program accepts from the user the center frequency, focal length and diameter of the parabolic reflector antenna and. About percent of the population, this is the Authority type of a Reflector who derives his/her authority from the lunar cycle.

They have a special connection with the moon. Before making an important decision, you should wait through a twenty-eight-and-a-half-day moon cycle, which provides a consistent, familiar pattern to work with.

The Parabolic Curve Pattern, as the name suggests is a chart pattern that resembles that of a parabolic curve. It is not found that often, thus making it a very rare pattern in the markets.

It is also one of the most sought after chart patterns as it signals a reversal in price. Although one might think that the parabolic.

Strategy Pattern Being required to present both Fahrenheit degrees and Celsius degrees in the same application, thus making a form for each, is just a waste of time. Applying a Strategy design pattern to factor out the small changes is best suited/5(16).

Aperture efficiency of parabolic reflector 12 ß Ô ã L ß æ ã Ü ß ß â é Ø å ß Ô à ã ß Ü ç è × Ø ß ã Û Ô æ Ø ß Õ ß â Ö Þ Ô Ú Ø ß æ è å Ù Ø å å â å • ß æ ã Ü ß ß â é Ø å power that isradiatedby the feed, intercepted, and collimatedby the reflecting surface • ß Ô à ã ß Ü ç è × Ø uniformity of the feed pattern over the.

This E-book is a compilation of different forex strategies that you can use for you own trading. If you do not have a system, then you can use this book to find one that works for you. This strategy is best in trending markets if the market is in a consolidation period do not use as the movement is small so you run higher risks.

Details Strategy for reflector pattern calculation EPUB

A strategy to obtain sets of initial configuration to design freeform reflector surfaces is presented. This strategy brings the initial configuration of the reflector surface using a collection of elemental facets defined by Bezier surfaces and able to face the optimization process of Author: Núria Tomás Corominas, Josep Arasa Martí.

You searched for: reflective reflector. Etsy is the home to thousands of handmade, vintage, and one-of-a-kind products and gifts related to your search. No matter what you’re looking for or where you are in the world, our global marketplace of sellers can help you find unique and affordable options.

Let’s get started. Target: Measure the distance of the rise from the base to the top of the pattern. Most Parabolic Arc patterns return to the 62–79% of its rise. Stop: Protect the trade by placing few ticks above the high of the Parabolic Arc.

Do you mostly trade this pattern on. This excellent book is meant to serve as a complete exposition of design, analysis, fabrication, test, and operation of reflectarray antennas. Also, this great book places an emphasis on the presentation of the underlying physical principles of radiating structures/5(2).

Efficient Analysis of Reflector Antennas using GRASP Erik Jørgensen*, Hans-Henrik Viskum, Stig B. Sørensen, and Peter Meincke TICRA, Læderstræde 34, DK Copenhagen K, Denmark GRASP has for many years constituted the de facto standard in the space community for advanced reflector antenna modeling.

Reflector antennas may take many configurations, some of the most popular ones being plane, corner, curved reflectors, and so on. In this chapter only the curved reflectors, such as parabolic and Cassegrain, will be discussed.Trading the trend in any market is a great trading strategy and using the Parabolic SAR to find reversal points in the direction of the Forex trend makes it even better.

We are going to use the period exponential moving average to show us the trend. This is a longer period moving average than most people are used to considering the 20 period moving average is the most .Reflector Director is an iOS companion app for Reflector 2.

It turns iPhones and iPads into a remote control for Reflector 2. Teachers can control Reflector 2 from anywhere in the classroom using an iPhone or an iPad. This means there’s no need for a teacher to be anchored to a Size: 4MB.