Undoubtably one of the key factors influencing recent technology has been the advent of high speed computational tools. Virtually every advanced engi� neering system we come in contact with these days depends upon some form of sampling and digital signal processing. Well known examples are digital tele� phone systems, digital recording of audio signals and computer control. These developments have been matched by the appearance of a plethora of books which explain a variety of analysis, synthesis and design tools applica� ble to sampled-data systems. The reader might therefore wonder what is distinc� tive about the current book. Our observation of the existing literature is that the underlying continuous-time system is usually forgotten once the samples are tak� en. The alternative point of view, adopted in this book, is to formulate the analy� sis in such a way that the user is constantly reminded of the presence of the under� lying continuous-time signals. We thus give emphasis to two aspects of sampled-data analysis: Firstly, we formulate the various algorithms so that the appropriate contin� uous-time case is approached as the sampling rate increases. Secondly we place emphasis on the continuous-time output response rath� er than simply focusing on the sampled response.

Synopsis:

Dealing with signal sampling techniques in digital signal processing and control, this text emphasizes the concept of intersample behaviour. Tools are presented for analyzing systems that contain both sampled and continuous time signals. The first section deals with digital signal processing and presents a unified description of the frequency domain characteristics of sampled and continuous signals, as well as sampling and reconstruction of signals, lattice and Kalman filtering and various related estimation issues. The second half of the book looks at digital control and covers such topics as sampled data control, multirate control and periodic systems. There is a complete discussion of modern discrete time control and a unified treatment of Fourier analysis of signals.

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