Accession Number : ADA306457

Title :   Communication Jamming of Direct-Spread Spectrum Modulation,

Corporate Author : NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH

Personal Author(s) : Muxun, Xu

PDF Url : ADA306457

Report Date : 13 FEB 1996

Pagination or Media Count : 31

Abstract : The article studies spot-jamming of waveforms; the author points out that this jamming is still in the exploratory study stage. The article stresses investigating correlation jamming, single-frequency jamming, and unmodulated continuous- wave jamming. These kinds of jamming involve barrage jamming of direct-spread spectrum modulation. Barrage jamming is an effective jamming system against present-day direct-spread spectrum modulation. Single-frequency jamming is not the optimal absolute kind of jamming; however, correlation jamming and unmodulated continuous-wave jamming are the optimal choices of absolute jamming. Correlation jamming is suitable in applying barrage jamming on multiple message channels in direct-spread spectrum modulation in adjacent carrier frequencies. However, the unmodulated continuous-wave jartirning is adaptable to apply barrage jamming on fixed-frequency modulation, frequency-hopper modulation, direct-frequency modulation, and hybrid spread- spectrum modulation of multiple widely distributed message channels with respect to the signal carrier frequency.

Descriptors :   *RADIO JAMMING, FREQUENCY MODULATION, CONTINUOUS WAVES, COMMUNICATION AND RADIO SYSTEMS, TRANSLATIONS, MESSAGE PROCESSING, CHINA, CROSS CORRELATION, CARRIER FREQUENCIES, CHINESE LANGUAGE, SPREAD SPECTRUM.

Subject Categories : Radio Countermeasures

Distribution Statement : APPROVED FOR PUBLIC RELEASE