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This course is geared to those unfamiliar as well as those experienced with radar design. It covers radar basics and advanced topics from a simple, physical point of view. It covers present technology and techniques as well as future trends and techniques. This course is an updated version of the Radar Technology course given previously. Those who have taken the Radar Technology previously should find it worthwhile taking this revised version. Extra lecture added in order to include coverage of NEW material consisting of (but not limited to): Radar height-range coverage diagram determination using the powerful SPAWAR’s (updated May ‘05) AREPS 3.3 and EREPS 3.0 programs. The AREPS program provides coverage for arbitrary propagation conditions (ducts [evaporation, surface, or elevated], subrefraction or superrefraction) and terrain conditions (based on DTED data). The latest powerful AREPS program accounts for surface roughness scattering and evaluates sea and land clutter backscatter versus range. The attendees will be informed on how to obtain FREE, these PC based, versatile programs, valued at thousands of dollars; Also covered will be: Anomalous Propagation and what to do about it; STAP, AMTI, DPCA; Synthetic Aperture Radar (SAR) processing; digital beamforming: System Temperature Updated course is framed around books Radar Technology (1977) and Aspects of Modern Radar (1988) edited by Eli Brookner; updated version of the book “Tracking and Kalman Filtering Made Easy” (1998) by Eli Brookner; and new version of Barton’s radar systems book “Radar System Analysis and Modeling” (2004). Also given out free are supplementary notes consisting of copies of over 800 vugraphs plus 8 survey paper reprints by Dr. Eli Brookner that are covered in the lecture. These 8 survey paper prints plus others are:
The Radar Technology textbook for the course gives parameters for 96 American, Russian, French, Dutch and English radars (Table 1). Photos for nearly all 96 radars plus others are provided in the text. The Aspects of Modern Radar book updates this table giving the parameters of over 200 surface and airborne radars. The recent book “Tracking and Kalman Filtering Made Easy”, takes the mystery and drudgery out of the g-h, g-h-k and Kalman filters. This book covers the filters from simple physical and geometric approaches. Extensive, simple and useful design equations, procedures and curves are presented. Extensive homework problems and their solutions are given. Covered in simple terms; is the voltage least-squares filtering problem, the orthognal transformations (Givens, Gram-Schmidt and Householder) for doing least-squares filtering, and finally the extended Kalman filter. For the begi For the experienced, the most recent radar technology and techniques are covered in simple terms, e.g., the detection of low flying, low cross-section targets, techniques for coping with multipath when tracking low flying targets (e.g. the use of an even difference over sum pattern), off-axis monopulse, complex monopulse and multiple carrier frequencies, the Dome antenna, CCDs, BBDs, SAW devices, SAW monolithic convolvers, microstrip antennas, ultra low antenna sidelobes (<-50 dB), stacked beam and phased array systems, (1-D, 2-D, Limited Field of View [LFOV]), Moving Target Detection (MTD), fiber optics. These will be explained so that the inexperienced can follow as well. For both the novice and experienced covered are tracking, prediction and smoothing in simple terms (the mystery taken out of g-h and Kalman filters); the latest developments in solid state discrete and monolithic microwave integrated circuits (MMICs), from UHF to mm waves and in tubes (e.g., gyrotrons), state-of-the-art and future trends in signal digital processing architectures and hardware; strip and spotlight synthetic aperture radar (SAR): Displaced Phase Center Antenna (DPCA) technique; trends in signal and data processing; FPGAs; systolic processing; GaAs technology; digital beam forming; Adaptive-Adaptive Array Processing for near optimum jammer suppression with orders of magnitude reduction in computation complexity and in transient time. Lecture 1 October 25 FUNDAMENTALS OF Radar: Part 1 History of Radar Major achievements since WWII: Phased Arrays. Principles explained with COBRA DANE used as example. Covered will be: Near and Far Field Definitions, Phased Steering, Time Delay Steering, Subarraying, Array Weighting, Monopulse, Duplexing, Array Thinning, Ionospheric Dispersion Compensation embedded element, Tour of COBRA DANE (6 stories) via color slides. Radar equation derived; search and track forms Frequency Tradeoffs: Search vs Track, Ambiguous Doppler and Range, Chinese Remainder Theorem for Ambiguity Removal, Detection in Clutter
Lecture 2 November 1 FUNDAMENTALS OF Radar: Part 2 Frequency Tradeoffs (continued) Blind Velocity region, range eclipsing Detection of Low Flying, Low Cross-Section Targets Antenna Lobing Pattern in Elevation Ground Multipath Problem and Techniques for
coping with it, e.g., use of an even S£D, Off-Axis Two Frequency Radar Systems; Marconi L- and S-band S631, Signal (Holland) Flycatcher X and Ka System
Lecture 3 November 8 FUNDAMENTALS of Radar: Part 3 Propagation: standard superrefraction, Subrefraction, ducts, evaporation ducts Determination of radar coverage using EREPS 3.0 program and new AREPS 3.3 program. OTH Radar: Tube and OTH Relocatable Solid State System Environmental Factors Dependence of clutter model on grazing angle and size radar resolution cell discussed. Weibull clutter Polarization Choice
Lecture 4 November 22 FUNDAMENTALS of Radar: Part 4 Antenna Scanning Systems: Fixed Beam System: Wake Measurement Radar (WMR) 2-D Scanners; 3-D Scanners Stacked Beam: Marconi, Martello; SMARTELLO ARSA-4 Frequency Scanning in Elevation Only Systems: ITT Series 320 Phased Scanning in Elevation Only Systems: TPS-59, GE-592, Alenia, Selenia RAT-31DL, Phased-Frequency Scanners: Raytheon Fire Finder and Plessy New AR320; Limited and Hemispherical Scanning (Dome Antenna) related and explained in simple terms.
Lecture 5 December 6 FUNDAMENTALS of Radar: Part 5 Ultra Low Antenna Sidelobes (40 dB down or more) Slotted waveguide (AWAC, TPS-70), Dipole, Stripeline Arrays Reflectors. Commercial Radars: Collision Avoidance, subsurface Moving Target Indicators (MTI) Two-Pulse Cancellor, Pulse Doppler Processing, Moving Target Detector (MTD), Optimum Clutter Cancellor, Maximum Entropy Method (MEM) STAP, AMTI, DPCA
Lecture 6 December 20 TRENDS IN SIGNAL PROCESSING: Part 1 What is Pulse Compression? Matched Filters Chirp Waveform Defined Analog Processing Surface Acoustic Wave (SAW) Devices Reflective Array Compressor (RAC), as Chirp Fourier Transformer, Delay Lines Bandpass Filters, Oscillators, Resonators (as Filters and Oscillators) IMCON Devices explained and state of the art given The Analog programmable Monolithic SAW Convolver BBD/CCD/CTD. What are they?
Lecture 7 January 10 TRENDS IN SIGNAL PROCESSING: Part 2 Digital Processing Fast Fourier Transform (FFT) Butterfly, Pipeline and In-Place Computation explained in simple terms Winograd Fourier Transform Algorithm (WFTA) Maximum Entropy Method (MEM) Spectral Estimator Digital hardware: state of the art A/Ds, FPGAs and Memory Signal Processor Architectures Pipeline FFT, Distributed, Hybrid, Systolic Sidelobe Canceler, Adaptive-Adaptive Processing Digital Beam Forming; its advantages (e.g., multiple beams, fewer A/D bits) Distributed Beam Steering
Lecture 8 January 24 COMPONENT TRENDS Solid State Transmitters
All Solid State PAVEPAWS described in detail; its advantages over tube radar highlighted BMEWS radar Monolithic Microwave Integrated Circuitry (MMIC); integrated circuitry technology applied to microwave circuitry just as was done in the computer field for logic and memory circuitry). Potential of inexpensive array modules and other microwave circuitry. THAAD (GBR), SPY-3 IRIDIUM, MEADS, COBRA, AMSAR Tube Basics: Magnatron, TWT, Klystron, Gyrotrons. Microstrip Antennas: Inexpensive Monolithic, Wideband. SYNTHETIC APERTURE RADAR Strip, Spotlight, Digital processing, Practical use of super resolution for factor of 2 improvement in resolution,
Lecture 9 January 31 TRACKING, PREDICTION AND SMOOTHING Covered using simple Algebra and Physical understanding The mystery taken out of Kalman Filters Tracking Problem What is a-b (g-h) Filter: Simple explanation, derivations and physical feel then given Prediction Errors due to: Target Dynamics Measurement Noise Transient Response; Critically Damped Filter, Fading Memory; Benedict-Bordner Filter Example Designs; Stability; Track Initiation Kalman Filter: Explained in simple physical terms Random Target Dynamics Model Minimum Least Squares Estimation Why Kalman Filter? Physical Feel for relationship to Weiner Filter Matrix Notation Simple Derivation Tracking Initiation α-b-g (g-h-k) Filter
Lecture 10 February 7 HOW TO LOOK LIKE A GENIUS IN DETECTION WITHOUT REALLY TRYING Single Scan Detection A simple procedure for determining detection t No detailed mathematics presented, the emphasis being to obtain results quickly and physical understanding the target models. Covered are the different target models – non-fluctuating, Marcum, Swerling, Weinstock, Chi-Square, Rayleigh, Lognormal, Rice and YGIAGAM. Also covered are the different losses – beam shape, CFAR, mismatch. Cumulative probability of Detection Range equation and Universal Curves. Course Fee Schedule:
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Copyright © 2004 IEEE Boston Section.
All rights reserved. Updated Thursday June 28, 2007 |
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