太赫兹科学与电子信息学报2017，Vol.15Issue(3)：417-424,8.DOI:10.11805/TKYDA201703.0417
有源噪声干扰对脉压的干扰效应分析
Analyzing jamming effect on pulse compression of active noise interference
摘要
Abstract
It can reflect profoundly the interference effects and provide the basis on the designs of jamming and anti-jamming to understand the specific effects of typical active noise interferences for radar signal processing. The thesis is focused on the interference effects of pulse compression by Radio Frequency noise, Noise Amplitude Modulation jamming, Noise Frequency Modulation jamming and Noise Phase Modulation jamming. First, their characteristics are compared according to power spectral density, bandwidth and power of four active jamming modes. Then, by theoretical deduction, the changes of different jamming methods and the influences on effective interference bandwidth and power suppression ratio under the Linear Frequency Modulation(LFM) pulse compression are studied. Finally, the influences of active interference on pulse compression are concluded and simulations are performed to validate their correctness. Results show that the effective interference bandwidth after pulse compression is related to the sighting error of jamming center frequency, the signal carrier frequency and the bandwidth overlap;and the ratio of output interference power to input interference power is equal to the ratio of effective interference bandwidth to interference bandwidth before pulse compression. Besides, the power suppression ratio is also proportional to the ratio of effective interference bandwidth to bandwidth before pulse compression.关键词
压制式噪声干扰/干扰特征/脉压/干扰效应/功率压制比Key words
blanket noise jamming/interference characteristic/pulse compression/interference effect/power suppression ratio分类
信息技术与安全科学引用本文复制引用
朱晓芳,郑坤,王洪,汪学刚..有源噪声干扰对脉压的干扰效应分析[J].太赫兹科学与电子信息学报,2017,15(3):417-424,8.基金项目
国防基础科研基金资助项目(B1120133036) （B1120133036）
电子信息控制重点实验室基金资助项目 （）
