BS-501 HIGH-SPEED CORRELATOR.
Abstract
This report describes the design and development of an experimental real time audio bandwidth (50 to 5000 cps) correlator that will display a correlogram while operating 'on line.' The correlation index is displayed as a function of relative delay and time for either auto or cross correlation. The correlogram is presented as a three-dimensional display on the CRT of a self-contained oscilloscope with the X axis presenting time, Y axis relative delay and Z (intensity) representing the correlation index. Signal input circuitry includes a normalizing (AGC) function with 40 db dynamic range along the necessary gross input level controls and metering. A five-bit A to D converter drives a recirculating memory speed up system. Appropriate clock, accumulator, and compute circuits are used to approximate correslation coefficient at a real time rate. The output D to A converter drives the Z axis of the oscilloscope to indicate the correlation coefficient. The operating features of this device are given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1964
- Accession Number
- AD0605263