DESIGN AND CONSTRUCTION OF A BAND-PASSED MATCHED FILTER.
Abstract
A band-passed matched filter and coded-pulse generator was designed and constructed using the five-digit Barker code. This band-passed matched filter has the desirable feature that it does not employ modulation or demodulation equipment, the modulation being inherent in the system. The basic construction uses the link structure, with the modification of separable links which permit easy alignment and the changing or enlarging of the code as desired. The need for negative digits in the Barker code is filled by the design and construction of special passive, 'inverter' networks that simply invert the signals appearing at the input. The necessary delay is introduced by placing equal lengths of delay cable, rather than delay networks, between all grid networks. The performance of networks with from one to six links and of the inverter network are shown. Finally, the operation of the band-passed matched filter is given by the impulse responses of the codedpulse generator and the matched receiver, and by the over-all system response. The measured ratio of central peak to side lobes was 3.6:1, which is close to 70 percent of the theoretically predicted value.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0610306
Entities
People
- S. Rashba
Organizations
- Cornell University College of Engineering