Describing the mathematical development underlying current and classical methods of geolocating electronic systems that are emitting, this newly revised and greatly expanded edition of a classic Artech House book offers practical guidance in electronic warfare target location. The Second Edition features a wealth of additional material including new chapters on time delay estimation, direction finding techniques, and the MUSIC algorithm. This practical resource provides you with critical design information on geolocation algorithms, and establishes the fundamentals of existing algorithms as a launch point for further algorithm development. You gain an in-depth understanding of key target location methods that you can effectively apply to your work in the field. You discover triangulation algorithms that offer a highly efficient way to geolocate targets when the real estate on the sensor systems is adequate to support an antenna array. The book also presents quadratic geolocation techniques that can be implemented with extremely modest antennas - frequently a single dipole or monopole. Moreover, this authoritative volume details methods for geolocating the source of high frequency signals with a single sensor site.
Table Of Contents
Introduction to Emitter Geolocation -Introduction. Gradient Descent Algorithm. Concluding Remarks. ; Triangulation -Introduction. Basic Concepts. Least-Squares Error Estimation. Total Least-Squares Estimation. Least-Squares Distance Error PF Algorithm. Minimum Mean-Squares Error Estimation. The Discrete Probability Density Method. Generalized Bearings. Maximum Likelihood PF Algorithm. Multiple Sample Correlation. Bearing-Only Target Motion Analysis. Sources of Error in Triangulation. Concluding Remarks. ; DF Techniques -Introduction. Array Processing Direction of Arrival Measurement Methods. Other Methods of Estimating the AOA. MSE Phase Interferometer. DF with a Butler Matrix. Phase Difference Estimation Using SAW Devices. Concluding Remarks. ; MUSIC -Introduction. MUSIC Overview. MUSIC. Performance of MUSIC in the Presence of Modeling Errors. Determining the Number of Wavefields. Effect of Phase Errors on the Accuracy of MUSIC. Other Superresolution Algorithms. Concluding Remarks. ; Quadratic Position-Fixing Methods -Introduction. TDOA Position-Fixing Techniques. Differential Doppler. Range Difference Methods. Concluding Remarks. ; Time Delay Estimation -Introduction. System Overview. Cross Correlation. Generalized Cross-Correlation. Estimating the Time Delay with the Generalized Correlation Method. Time Delay Estimation Using the Phase of the Cross-Spectral Density. Effects of Frequency and Phase Errors in EW TDOA Direction-Finding Systems. Concluding Remarks. ; Single-Site Location Techniques -Introduction. HF Signal Propagation. Single-Site Location. Passive SSL. Determining the Reflection Delay with the Cepstrum. MUSIC Cepstrum SSL. Earth Curvature. Skywave DF Errors. Ray Tracing. Accuracy Comparison of SSL and Triangulation for Ionospherically Propagated Signals. Concluding Remarks. ;