Accession Number : ADD010329

Title :   Impulse Autocorrelation Function Communications System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Gutleber,Frank S

Report Date : 11 Jul 1983

Pagination or Media Count : 15

Abstract : A pulse code modulation communications system employing orthogonally separated noise code mate pairs having autocorrelation functions which upon detection in a matched filter and addition compress to a lobeless impulse. A mate pair of bi-polar digital noise codes are impressed on respective RF carriers generated by the same frequency source with one code mate being transmitted separately as a vertically polarized wave while the other code mate is transmitted separately as a horizontally polarized wave. The polarized RF carrier signals containing the code mates are respectively received by horizontally and vertically polarized antennas coupled to radio receiver apparatus which provides respective received signals containing the code mates. The code mates are then detected by matched filters which operate to compress the code mates. The compressed code mates are then linearly added to provide the output signal comprising a lobeless impulse signal. (Author)

Descriptors :   *Patent applications, *Bipolar systems, *Radio equipment, *Pulse code modulation, Polarization, Pseudo noise systems, Autocorrelation, Antennas, Compression, Matched filters, Digital systems, Waves, Radiofrequency pulses, Orthogonality, Horizontal orientation, Noise, Sources, Detection, Vertical orientation, Frequency, Output, Coding, Signals

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE