Accession Number : AD0468425


Title :   A THEORETICAL STUDY TO IMPROVE UTILIZATION OF MISSILE TELEMETRY SYSTEMS.


Descriptive Note : Final rept., 11 Apr 62-10 Jan 63,


Corporate Author : ALABAMA UNIV UNIVERSITY BUREAU OF ENGINEERING RESEARCH


Personal Author(s) : Simpson, Richard S ; Burnett, J Reese


Report Date : Feb 1963


Pagination or Media Count : 48


Abstract : Data bandwidth compression of slowly varying measurements can be accomplished using rather straightforward techniques. The extension of the concept of data compression to vibration measurements appears to be a natural step. However, considerable difficulty is encountered when this step is attempted by use of systems other than simple band-type analyzers. The major difficulty is that of extracting information from the raw data which will give the power density spectrum. This is an important facet of the process because the major portion of the possible data compression is concentrated in this step. In this work the band-type analyzer and the coherent memory-filter analyzer (CMF) have been considered as possible techniques for accomplishing the task. Only the band-type analyzer appears to be feasible under the strict hardware limitations imposed on non-tactical systems. Once the problem of obtaining the power density spectrum has been solved, adaptive data compression is possible. Though the contribution to total compression is less than that realized in obtaining the power density spectrum, significant compression is gained. Hardware requirements render this compression costly, however. Identification and buffering problems generally imply the use of a digital system. Finally, it is apparent that the only feasible data bandwidth compression system is one using band-type analyzers operating in the simple mode. (Author)


Descriptors :   *TELEMETER SYSTEMS , GUIDED MISSILES , BANDWIDTH , TELEMETERING DATA , CLASSIFICATION , VIBRATION , PULSE COMPRESSION , FREQUENCY


Distribution Statement : APPROVED FOR PUBLIC RELEASE