Synthesis of matched filters for signal recognition using magnetostrictive delay lines

摘要

After a brief introduction to matched filters, a new method for their realisation, using magnetostrictive delay lines to generate sampled impulse responses, is described. The impulse response is determined by the distribution of remanent magnetism along the delay-line wire, and only one transducer coil is used. Investigations into the performance of the device as a matched filter are described.