Monopulse is a type of radar that sends additional information in the signal in order to avoid problems caused by rapid changes in signal strength. Monopulse is resistant to jamming which is one of the main reasons it is used in most radar systems today. This updated and expanded edition of an Artech House classic offers you a current and comprehensive treatment of monopulse radar principles, techniques, and applications. The Second Edition features two brand new chapters, covering monopulse countermeasures and countercountermeasures and monopulse for airborne radar and homing seekers. This essential volume categorizes and describes the various forms of monopulse radar, and analyzes their capabilities and limitations. The book also devotes considerable space to monopulse circuits and hardware components, explaining their functions and performance. This practical resource features numerous photographs and illustrations drawn from actual radar systems and components. This book serves as a valuable reference for both experienced radar engineers and those new to the field.
Preface to the Second Edition ; Preface to the First Edition ; Introduction  Review of Radar Principles. Tracking Radars and the Evolution of Monopulse. A Baselineù Monopulse Radar. Advantages and Disadvantages of Monopulse. Nonradar Uses of Monopulse. ; Terminology, Definitions, and Notation  The Meaning of Monopulse. Apertures and Illumination Functions. Patterns, Lobes, and Beams. Sum and Difference Patterns. Sum and Difference Notation. Error Signals. Complex Signal Representation and Complex Envelopes. Elevation, Azimuth, and Traverse. ; The Monopulse Output as a Complex Ratio  General Principles. Relative Phase of Difference and Sum. Some Useful Relationships and Formulas. ; Components Used in Monopulse  Antenna Mounts. Antennas. Feeds. Devices for Forming Sums and Differences. Receivers. ; AmplitudeComparison and PhaseComparison Classification  Definitions and Examples. Phase Fronts, Phase Centers, and Related Concepts. Distinguishing Between Phase and AmplitudeComparison Monopulse. Distinction Based on Relative Phase of Illumination Functions. Distinction Based on Sum and Difference Patterns. Apparent Conversion of One Class to the Other. Summary of AmplitudeComparison and PhaseComparison Classification. ; Optimum Feeds for SpaceFed AmplitudeComparison Monopulse Antennas  Nature of Optimization. f/D Ratio. Effect of Squint Angle in a FourHorn Feed. Optimization of Squint Angle. Comparison with Measured Patterns. Beacon Operation. Comparison of Beam Squint Angle and Feed Offset Angle. Effect of Squint Angle on Normalized Difference Pattern. Other Feed Configurations. Summary of Feed Optimization.; Monopulse in Array Antennas  Principles of Operation. Array Coordinates. Arrays with Space Feeds. Arrays with Constrained Feeds. Classification as Amplitude or Phase Comparison. Special Types of Arrays. ; Monopulse Processors  Functions and Properties of Monopulse Processors. Range Gating. Angular Coordinates for Monopulse Calibration. Exact Monopulse Processor. Processor Using Phases and Linear Amplitudes of s and d. Processor Using I and Q. Processor Using Phases and Logarithmic Amplitudes of s and d. Processor Using DotProduct Detector with AGC. An Approximate DotProduct Detector. Noncoherent Processor Using Sum and Difference of v1 and v2. Processor Using s + d and s ‚Üï d. Processor Using log v1 and v2. Processor Using s ‚Üï d. TwoChannel Monopulse Using s + d and s ‚Üï d. PhaseAmplitude Monopulse. Multiplexed Monopulse Receivers. Conopulse. Summary of Monopulse Processors. ; Response to Unresolved Targets  Review of Monopulse Response to a Point Target. The Meaning of Unresolved Targets. Superposition as an Approximation. The TwoTarget Problem. The Complex Indicated Angle. Physical Interpretation. Measurement of the Imaginary Part (QuadraturePhase) Component. Effect of LocalOscillator Frequency. Detection of Presence of Unresolved Targets. Mean and Variance of Indicated Angle. Weighted Mean of Indicated Angle. Possibility of Determining Angles of Unresolved Targets. Information Derivable from Real Part. Removal of Initial Assumptions. Extensions of Monopulse Techniques and Fundamental Limitations. ClosedLoop Tracking. More Than Two Targets. Nonindependent Targets. ; Monopulse Angle Errors  Error Due to Noise. Errors Due to Clutter. Dynamic Lag Error. RadarDependent Errors. TargetDependent Noise Errors.; Multipath  FlatEarth Specular Model. Effect on Detection. Effect on ClosedLoop Elevation Tracking. Types of Multipath Remedies. Beam Pattern Design. Range and Doppler Resolution. Smoothing and Averaging. LowEù Modes. OffsetNull Tracking. Elevation Patterns Having a Symmetrical Ratio. DoubleNull Tracker. Use of the Complex Indicated Angle. IndependentTarget Methods. Diffuse Multipath Effects on Monopulse. ; Monopulse Countermeasures and Countercountermeasures  Range and Doppler Denial and Deception. Generic Monopulse ECM. Exploitation of Radar Faults. ; Tracking Radar Applications of Monopulse  SurfaceBased Monopulse Tracking Radars. Airborne Monopulse Tracking Radars. Monopulse Homing Seekers. ; Nontracking Radar Applications of Monopulse  Monopulse 3D Surveillance Radars. Monopulse Secondary Surveillance Radars. Other Radar Applications. ; Special Topics  Difference and Sum Patterns Having a Ratio Proportional to Angle. The Diagonal Difference Signal. Units of Angle and Sine Space. Comparison with Rhodes ' Terminology and Classification. ; List of Symbols. About the Authors. Index ;

David K. Barton
David K. Barton is a consultant on radar systems, recently retired from ANRO Engineering, Inc., of Hudson, Massachusetts. Since 1975, he has been the series editor of Artech House's highly successful Radar series. Holder of the IEEE's Centennial Medal, Millennium Medal, and Dennis J. Picard Medal, he is widely regarded throughout the world as a leading authority on radar technology. He is the author of Radar System Analysis and Modeling (Artech House, 2004) and the coeditor of Radar Technology Encyclopedia, CDROM Edition (Artech House, 1999), among other publications.

Samuel M. Sherman
Samuel M. Sherman was a leading expert in the radar engineering field. He gained his extensive experience working for several years as a manager and staff scientist at The Missile and Surface Radar Organization in the RCA Government Systems Division.