Signals are launched, collected, and processed to interrogate, to detect and to extract their information content in every conceivable operational defence scenario and environment. Digital Signal processing is performed to extract signals of interest while suppressing other signals such as noise, interference, and jammers. The primary signal processing tools applied to these tasks are high performance reconfigurable spectrum channelizers and rapid high dynamic range spectrum analyzers. Channelizers can be applied to various signal generation as well as to signal collection applications. Multirate signal processing techniques offer the most cost effective options to implement wide bandwidth channelizers for. Recent developments in channelizer structures now offer rather impressive desirable channelizer capabilities not previously available to system designers. These options include multiple simultaneous channels with arbitrary bandwidths and arbitrary centre frequencies.

This presentation will include material that motivates the use of multirate signal processing and illustrate the unique capabilities of their application. The presentation will be light on mathematics and will emphasize understanding and intuition of the material. We will include many MATLAB demonstrations to illustrate concepts and capabilities. Participants will be guided through the gamut of traditional channel structures through the sequence of design options that convert the standard channelizers into truly remarkable and capable versions. Presentation side trips and emphasis will be responsive to attendee interests and questions: be prepared to ask good questions!

COURSE OUTLINE

Motivation for and Evolution of Polyphase Filter Banks: Evolution of receiver structures, Amstrong's Heterodyne structure, Digital version of Armstrong Structure, Digital Down Converter, interchange of heterodyne and filter operations, interchange of down-convert and down-sample and interchange of filter and down-sample.

FIR Filters performance, design, and required resources.

Channelizers for constant bandwidth and equal spaced center frequencies.

Sliding, Windowed, and Overlapped Spectrum Analyzers as a Polyphase Filter Bank.

Coupled Digital Drop Receiver and Spectrum Analyzer.

Channelizers for Arbitrary Bandwidth and arbitrary Spacing Center Frequencies.

SPEAKER: Professor Fredric J. Harris , San Diego State University, USA

Dr. Fredric J. Harris holds the Signal Processing Chair of the Communication Systems and Signal Processing Institute at San Diego State University where since 1967 he has taught courses in Digital Signal Processing and Communication Systems. He holds 20 patents on digital receiver and DSP technology and lecture throughout the world on DSP applications. He consults for organizations requiring high performance, cost effective DSP solutions. He is an adjunct member of the E&EE Department at Imperial College and an adjunct member at the IDA-Princeton Centre for Communications Research.

He has written over 200 journal and conference papers, the most well known being his 1978 paper "On the use of Windows for Harmonic Analysis with the Discrete Fourier Transform". He is the author of the book Multirate Signal Processing for Communication Systems and has contributed to a number of other books on DSP applications including the "Source Coding" chapter in Bernard Sklar's 1988 book, Digital Communications and the "Multirate FIR Filters for Interpolation and Resampling" and the "Time Domain Signal Processing with the DFT" chapters in Doug Elliot's 1987 book Handbook of Digital Signal Processing, and "A most Efficient Digital Filter: The Two-Path Recursive All-Pass Filter" Chapter in Rick Lyons 2007 book Streamlining Digital Signal Processing.

In 1990 and 1991 he was the Technical and then the General Chair of the Asilomar Conference on Signals, Systems, and Computers and was Technical Chair of the 2003 Software Defined Radio Conference and of the 2006 Wireless Personal Multimedia Conference. He became a Fellow of the IEEE in 2003, cited for contributions of DSP to communications systems. In 2006 he received the Software Defined Radio Forum's "Industry Achievement Award". His 2006 SDR conference paper was selected for the best paper award as was his 2010 paper at the Autotestcon conference. He served as Editor-in-Chief of the Elsevier DSP Journal.

The spelling of his name with all lower case letters is a source of distress for typists and spell checkers. A child at heart, he collects toy trains and old slide-rules.