Accession Number:

AD0258303

Title:

AN INVESTIGATION OF SYMBOL CODING FOR WEATHER DATA TRANSMISSION

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

Report Date:

1960-12-01

Pagination or Media Count:

1.0

Abstract:

Results of an investigation of possible binary digital codes for use in transmitting weather messages are presented. Binary codes in general are discussed, and the nature of symbol translations in the presence of single bit communication facility errors is indicated. Also investigated was the variation in symbol occurrence between normal and weather-message English. Symbol probability-of-occurrence data are used to establish code evaluation criteria and to describe the derivation of an optimum code through computer solution. code indicating an improvement of ten times over Modified Baudot Code, is presented. However, because of the implications involved in possible optimum code instrumentation, this study was limited in scope to codes that could be instrumented with only minor modification to existing facilities. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE