ANALOG-TO-DIGITAL DATA REDUCTION SYSTEM
Abstract
described herein is a new method of recording and processing large amounts of propagation and signal strength data on perforated tape by means of an automatic analog-to-digital conversion and time recording system, with data reduction and curve plots performed by a biquinary computer. A digital voltmeter and digital clock sample the input data, identify the data as a function of time, and store it digitally. For propagation tests, the analog input is sampled at a one second rate. The information stored in the converter is read out in a biquinary digital code on punched tape and processed by a biquinary computer. Specific numerical values for each one-second sample can be presented on a flexowriter. The computer automatically determines the mean values, computed at one-minute intervals and feeds these mean values through an X - Y variplotter associated with the computer where a distribution curve is automatically plotted. This data reduction system, although of special value in radio propagation research, may also be used wherever amplitude is plotted vs. time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1962
- Accession Number
- AD0273669
Entities
People
- J. E. Reegan
Organizations
- Air Force Cambridge Research Laboratories