Analysis of jamming effect of high-repetition rate laser based on different amplification circuits

LIANG Weiwei; YIN Ruiguang; ZHANG Wenpan; ZHAO Hongpeng; LI Bo

doi:10.7510/jgjs.issn.1001-3806.2015.05.019

In order to evaluate jamming effect of high-repetition rate laser, the laser jamming mechanisms of laser seekers with different amplification circuits were analyzed. The traction effect of high-repetition rate laser jamming was described. The necessity of large dynamic range signal amplification in laser seekers was studied. The principles of two different amplification circuits were introduced. The jamming effect of high-repetition rate laser was analyzed based on automatic gain control circuit and log-ratio amplifier circuit. The research indicates that high-repetition rate laser jamming was an effective method of laser countermeasure. The action effects were different because of different amplifying circuits of laser seekers. An automatic gain control circuit could not amplify signal instantly because of gain adjustment time and guided signal would be shielded by high-repetition rate laser jamming. A log-ratio amplifier circuit could broad the signal pulse width and decreases the signal-to-noise ratio and four branches signal consistency, which make high-repetition rate laser jam a seeker easily. The results will be helpful for evaluation of jamming effect of high-repetition rate laser.

Analysis of jamming effect of high-repetition rate laser based on different amplification circuits

1. Luoyang Electronic Equipment Test Center of China, Luoyang 471003, China

Received Date: 2014-07-08

Accepted Date: 2014-07-21

Available Online: 2015-09-25

Abstract: In order to evaluate jamming effect of high-repetition rate laser, the laser jamming mechanisms of laser seekers with different amplification circuits were analyzed. The traction effect of high-repetition rate laser jamming was described. The necessity of large dynamic range signal amplification in laser seekers was studied. The principles of two different amplification circuits were introduced. The jamming effect of high-repetition rate laser was analyzed based on automatic gain control circuit and log-ratio amplifier circuit. The research indicates that high-repetition rate laser jamming was an effective method of laser countermeasure. The action effects were different because of different amplifying circuits of laser seekers. An automatic gain control circuit could not amplify signal instantly because of gain adjustment time and guided signal would be shielded by high-repetition rate laser jamming. A log-ratio amplifier circuit could broad the signal pulse width and decreases the signal-to-noise ratio and four branches signal consistency, which make high-repetition rate laser jam a seeker easily. The results will be helpful for evaluation of jamming effect of high-repetition rate laser.

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Reference (16)

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Analysis of jamming effect of high-repetition rate laser based on different amplification circuits

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