Accession Number : AD0776912

Title :   Adjustable Digital Time Converter.

Descriptive Note : Technical rept.,


Personal Author(s) : Kaunzinger,Helmuth M. ; Rittenbach,Otto E.

Report Date : FEB 1974

Pagination or Media Count : 130

Abstract : The presentation covers the analysis, computer solution and simulation, design, construction and performance evaluation of an experimental digital time converter with five compression ratios ranging from 3.16 to 316 in a geometric progression. With an analog to digital converter at the input and a digital to analog converter at the output, this time converter operates with data samples circulating in register rings. The updating of this rotating information occurs at selected slow rates while readout samples are taken at a constant fast rate. The original sequence of input samples is preserved in the compressed output when a correct relationship exists between updating and readout rates, generated in appropriate timing circuits. The compressed signal is presented in segments of approximately .5 second each. The performance evaluation shows that the chosen approach is valid, that an experimental model works as expected, and that subsequent radar systems studies can be made with this time converter. (Modified author abstract)

Descriptors :   *Signal processing, *Moving target indicators, Radar signals, Processing equipment, Compression, Time, Digital systems, Analog to digital converters, Frequency conversion, Target recognition, Target signatures, Computerized simulation, Computer programs, FORTRAN

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE