The book reviews developments in the following fields:transmitter aerial; high power amplifier design; radar transmitter; receiver array technology; underwater acoustic sensor; diversity techniques in communications receivers; GaAs IC amplifiers; integrated optical technique; logarithmic receivers; CCD processor; acousto-optic correlators; GaAs MESFET comparator; very high performance integrated circuit; digital filters; display type; scan converter; display ergonomics; high throughput sonar processors; optical fibre system; satellite communication; VLSI array processor; cryogenic device; advanced image understanding; advanced signal processing; Ada and VLSI architecture. Author D. J. Creasey