Home | Amazing | Today | Tags | Publishers | Years | Account | Search 
Smart Antennas (Electrical Engineering & Applied Signal Processing Series)

Buy
Smart antennas involve processing of signals induced on an array of sensors such as
antennas, microphones, and hydrophones. They have applications in the areas of radar,
sonar, medical imaging, and communications.

Smart antennas have the property of spatial filtering, which makes it possible to receive
energy from a particular direction while simultaneously blocking it from another direction.
This property makes smart antennas a very effective tool in detecting and locating an
underwater source of sound such as a submarine without using active sonar. The capacity
of smart antennas to direct transmitting energy toward a desired direction makes them
useful for medical diagnostic purposes. This characteristic also makes them very useful
in canceling an unwanted jamming signal. In a communications system, an unwanted
jamming signal is produced by a transmitter in a direction other than the direction of the
desired signal. For a medical doctor trying to listen to the sound of a pregnant mother’s
heart, the jamming signal is the sound of the baby’s heart.

Processing signals from different sensors involves amplifying each signal before combining
them. The amount of gain of each amplifier dictates the properties of the antenna
array. To obtain the best possible cancellation of unwanted interferences, the gains of these
amplifiers must be adjusted. How to go about doing this depends on many conditions
including signal type and overall objectives. For optimal processing, the typical objective
is maximizing the output signal-to-noise ratio (SNR). For an array with a specified
response in the direction of the desired signal, this is achieved by minimizing the mean
output power of the processor subject to specified constraints. In the absence of errors,
the beam pattern of the optimized array has the desired response in the signal direction
and reduced response in the directions of unwanted interference.
(HTML tags aren't allowed.)

Drupal 7 Mobile Web Development Beginner's Guide
Drupal 7 Mobile Web Development Beginner's Guide
It's not an overstatement to say that handhelds have changed the world. What was, just 10 years ago, simply a phone is now the center of your online life and, for many users, their primary Internet device. The power of the smart phone is shaking up the world from Main Street and Wall Street to Pennsylvania Avenue and Downing...
Radiation Induced Molecular Phenomena in Nucleic Acids: A Comprehensive Theoretical and Experimental Analysis
Radiation Induced Molecular Phenomena in Nucleic Acids: A Comprehensive Theoretical and Experimental Analysis
Comprehensive theoretical and experimental analysis of UV-radiation and low energy electron induced phenomena in nucleic acid bases (NABs) and base assemblies are presented in this book. NABs are highly photostable; the absorbed energy is dissipated in the form of ultrafast nonradiative decay.

This book highlights the possible mechanisms of...

Building Client/Server Applications with VB.NET: An Example-Driven Approach
Building Client/Server Applications with VB.NET: An Example-Driven Approach

Building Client/Server Applications with VB .NET: An Example-Driven Approach is based on Release 1.0 of the .NET Framework / Release 1.0 of Visual Studio .NET + .NET Framework Service Pack 1. Jeff Levinson walks readers through how to write a complete application-no "snippets" of code- and will show readers examples of...


Mastering Linux Security and Hardening: Secure your Linux server and protect it from intruders, malware attacks, and other external threats
Mastering Linux Security and Hardening: Secure your Linux server and protect it from intruders, malware attacks, and other external threats

A comprehensive guide to mastering the art of preventing your Linux system from getting compromised.

Key Features

  • Leverage this guide to confidently deliver a system that reduces the risk of being hacked
  • Perform a number of advanced Linux security techniques such as...
Practical Immunopathology of the Skin (Current Clinical Pathology)
Practical Immunopathology of the Skin (Current Clinical Pathology)

Bruce R. Smoller, md, concisely reviews for practitioners and students alike the science of immunopathology, its many basic laboratory tools, and their multiple diagnostic uses in actual clinical case studies. The author presents in an easily digestible form a dictionary of antibody probes, summarizing for each antibody the targeted antigen...

Beginning Entity Framework Core 2.0: Database Access from .NET
Beginning Entity Framework Core 2.0: Database Access from .NET
Use the valuable Entity Framework Core 2.0 tool in ASP.NET and the .NET Framework to eliminate the tedium around accessing databases and the data they contain.

Entity Framework Core 2.0 greatly simplifies access to relational databases such as SQL Server that are commonly deployed in corporate settings. By
...
©2021 LearnIT (support@pdfchm.net) - Privacy Policy