Analog-Binary Programmable Transversal Filter.
Abstract
This Final Technical Report on the Analog-Binary Programmable Transversal Filter program emphasizes the testing of the TC1235 CCD correlator device. The Interim Technical Report for this program contained a statement of the program objectives, a general description of the analog-binary correlator, and a detailed design description of the correlator device. The objective of this program was to develop a programmable CCD (Charge-Coupled Device) circuit capable of correlating a variety of binary-coded waveforms. This analog-binary correlator stores a binary waveform as a reference, and then compares newly arriving signals to the reference waveform. In general , the signal is a binary code that has been corrupted in the transmission channel so that upon arrival at the receiver, it really has an analog character (i.e., the amplitude varies continuously). Analog-binary correlation techniques have an important advantage over purely digital approaches. If the analog signal is directly compared to the reference, only a single correlation channel is required, whereas a digital correlator requires a separate channel for each bit of resolution in the analog-to-digital converter. Thus, a reduction in parts count, with attendant improvements in size, cost and reliability, is realized with the CCD correlator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1980
- Accession Number
- ADA084346
Entities
People
- D. A. Gandolfo
- J. R. Tower
- L. D. Elliott