A Synchronous Signal Processing Technique for Repetitive Arbitrary Waveforms.
AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MASS
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The details of a new signal processing technique have been discussed, an instrument Time Resolver Electronics constructed, and the performance compared with a conventional lock-in amplifier. The principal advantages include increased SN and elimination of distortion caused by the temporal variation of the signal waveform. It has been shown that as the signal wavefrom departs form the sine wave, the efficiency of the new technique becomes superior to that used in commercial instruments. Even more dramatic is the demonstrated elimination of distortion due to waveform character, repetition rate, and duty cycle. Although we have chosen only one example to illustrate the capabilities of the new technique, there are a number of areas of possible application. These include the molecular beam area, pulsed laser excitation, and studies of excitation-relaxation phenomena in general. In fact, any application that presently requires a lock-in amplifier for signal processing could be a possible candidate to utilize the new technique to advantage. Author
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods