초록 ▼

A method and apparatus is disclosed for automatically and repeatably measuring the effectiveness of jamming applied against a communications link. The method is machine performed, free of the need of listener personnel, and the recording and scoring tasks required in conventional methods. Using a ra

A method and apparatus is disclosed for automatically and repeatably measuring the effectiveness of jamming applied against a communications link. The method is machine performed, free of the need of listener personnel, and the recording and scoring tasks required in conventional methods. Using a ratio of auto and cross-correlation functions, a number is produced (CCI Index) which is the desired measure of jamming effectiveness. The CCI Index is a standardized value which indicates jamming effectiveness in any type communications link regardless of equipment or type of modulation in use. The Index, rapidly obtainable, can be used to pinpoint which jamming technique might be most advantageously employed, and by precisely how many db it would be superior.

대표청구항 ▼

Apparatus for automatically measuring the degree of jamming effectively being applied against any particular communications link including transmitter and receiver portions therein, comprising; first circuit means for measuring a first peak value autocorrelation of a first signal being transmitted w

Apparatus for automatically measuring the degree of jamming effectively being applied against any particular communications link including transmitter and receiver portions therein, comprising; first circuit means for measuring a first peak value autocorrelation of a first signal being transmitted within the link; second circuit means for measuring a second peak value auto-correlation of the detected, receiver signal; third circuit means for attenuating the power level of the receiver\s output so that said first and second peak values are equal; fourth circuit means for measuring a third peak value cross-correlation of the attenuated receiver signal with the said first transmitted signal; fifty means for forming a ratio of the said third peak value and first peak value; whereby the said determined ratio is a measure of the jamming effectiveness, measuring the degree of jamming present in the communications link.