Skip to main content
main-content

Über dieses Buch

This book presents the theory, analysis and design of microwave stepped-frequency radar sensors. Stepped-frequency radar sensors are attractive for various sensing applications that require fine resolution. The book consists of five chapters. The first chapter describes the fundamentals of radar sensors including applications followed by a review of ultra-wideband pulsed, frequency-modulated continuous-wave (FMCW), and stepped-frequency radar sensors. The second chapter discusses a general analysis of radar sensors including wave propagation in media and scattering on targets, as well as the radar equation. The third chapter addresses the analysis of stepped-frequency radar sensors including their principles and design parameters. Chapter 4 presents the development of two stepped-frequency radar sensors at microwave and millimeter-wave frequencies based on microwave integrated circuits (MICs), microwave monolithic integrated circuits (MMICs) and printed-circuit antennas, and discusses their signal processing. Chapter 5 provides the electrical characterization and test results of the developed microwave and millimeter-wave stepped-frequency radar sensors. Finally, a summary and conclusion is provided.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

The book is organized in 6 chapters. Chapter 1 gives the introduction of SFCW radar sensors and some of their possible applications. Chapter 2 addresses the general analysis of radar sensors. Chapter 3 covers the analysis of SFCW radar sensors. Chapter 4 presents the development of a microwave and millimeter-wave SFCW radar sensors using MICs and MMICs including the designs of the transmitters, receivers and antennas, and signal processing. Chapter 5 discusses the electrical tests and sensing measurements of the developed microwave and millimeter-wave SFCW radar sensors. Finally, Chapter 6 gives the summary and conclusion.

Cam Nguyen, Joongsuk Park

Chapter 2. General Analysis of Radar Sensors

This chapter addresses the general analysis of radar sensors. Specifically, it discusses signal propagation in media encountered in using radar sensors, signal scattering from objects, systems equations including Friis transmission equation and radar equations, signal-to-noise ratio, receiver sensitivity, maximum range or penetration depth, and system performance factor. Understanding these basic parameters provides general insight of a radar sensor’s possible performance and operation and allows its general analysis to be conducted, which are essential toward the design of microwave systems for sensing applications.

Cam Nguyen, Joongsuk Park

Chapter 3. Stepped-Frequency Radar Sensor Analysis

The analysis of SFCW radar sensors is presented in this chapter. Specifically, it addresses the system’s important parameters including transmitted and received signals, down-converted I and Q signals, synthetic pulse, angle and range resolutions, frequency step, number of frequency steps, total bandwidth, range or penetration depth, range accuracy, range ambiguity, pulse repetition interval, dynamic range, and system performance factor. Maximum ranges or penetration depths in sensing multi-layer and buried targets are also discussed. The presented materials, although concise, should provide sufficient information for RF engineers to undertake the analysis of their own SFCW radar sensors and help design these sensors for sensing applications.

Cam Nguyen, Joongsuk Park

Chapter 4. Development of Stepped-Frequency Continuous-Wave Radar Sensors

This chapter presents the development of two SFCW radar sensors realized in single packages with microwave integrated circuits (MICs) and microwave monolithic integrated circuits (MMICs): a millimeter-wave sensor operating across 29.72-37.7 GHz and a microwave sensor working from 0.6-5.6 GHz. The designs of the transceivers, antennas and signal processing, which form the most important parts of the sensors, are described. The presented information, although concise, is essential and in sufficient details, which enable microwave engineers to build similar microwave and millimeter-wave SFCW radar sensors for various sensing applications.

Cam Nguyen, Joongsuk Park

Chapter 5. Characterizations and Tests of Stepped-Frequency Continuous-Wave Radar Sensors

This chapter discusses the electrical tests and several sensing measurements of the developed microwave and millimeter-wave SFCW radar sensors described in Chap. 4. The electrical tests verify the electrical performances of these systems to make sure they possess the desired electrical characteristics as designed. These electrical tests, while do not directly show the actual performance of the sensors in practical sensing applications, are essential in system development and need to be conducted first. The sensing measurements of the millimeter-wave SFCW radar sensor described in this chapter include surface profiling, liquid-level measurement, and detection and location of buried objects. The sensing measurements for the microwave SFCW radar sensor are the measurements of pavement structures including an actual pavement in laboratory and actual roads. The measured sensing results show good agreement with the actual values, demonstrating the workability and usefulness of the developed sensors for various surface and subsurface sensing applications. Moreover, this chapter also describes of the procedures involved in the sensing measurements, which provide not only the operations of these sensors, but also their system evaluations for sensing applications.

Cam Nguyen, Joongsuk Park

Chapter 6. Summary and Conclusion

This book presents the theory, analysis, and design of SFCW radar sensors and their components in five chapters. Specifically, the book addresses the system analysis, transmitter design, receiver design, antenna design, signal processing, and system integration and test of two SFCW radar sensors. These systems are realized in a single unit using MICs and MMICs and operate from 29.72-37.7 GHz and 0.6 to 5.6 GHz. They can be used for surface and subsurface sensing applications and have demonstrated high resolution and accuracy in various sensing measurements.

Cam Nguyen, Joongsuk Park

Backmatter

Weitere Informationen

BranchenIndex Online

Die B2B-Firmensuche für Industrie und Wirtschaft: Kostenfrei in Firmenprofilen nach Lieferanten, Herstellern, Dienstleistern und Händlern recherchieren.

Whitepaper

- ANZEIGE -

INDUSTRIE 4.0

Der Hype um Industrie 4.0 hat sich gelegt – nun geht es an die Umsetzung. Das Whitepaper von Protolabs zeigt Unternehmen und Führungskräften, wie sie die 4. Industrielle Revolution erfolgreich meistern. Es liegt an den Herstellern, die besten Möglichkeiten und effizientesten Prozesse bereitzustellen, die Unternehmen für die Herstellung von Produkten nutzen können. Lesen Sie mehr zu: Verbesserten Strukturen von Herstellern und Fabriken | Konvergenz zwischen Soft- und Hardwareautomatisierung | Auswirkungen auf die Neuaufstellung von Unternehmen | verkürzten Produkteinführungszeiten
Jetzt gratis downloaden!

Bildnachweise