Written for readers with backgrounds in physics, engineering, or mathematics who wish to learn about the detection and extraction of information from radio-frequency (RF), acoustic, or optical signals in the presence of noise, this volume covers the fundamentals of receivers; a review of probability; a review of noise and random processes; continuous and discrete-time signals; detection of signals in noise; coherent and noncoherent detection and processing; parameter estimation and applications; waveform analysis, range-Doppler resolution, and ambiguity; large time bandwidth waveforms; generalized coherent and noncoherent detection and processing; and systems considerations. An appendix presents a table of values of the error function. The author is a staff scientist in the aerospace communications systems division of a large corporation.