CAJ | 학술논문

针对单频连续波干扰极易通过频域滤波加以抑制，而宽带连续阻塞式干扰又存在干扰效率低下的问题，提出脉冲连续波这种新的宽带梳状拦阻式干扰样式。根据 C/A 码、P(Y)码和 M 码信号功率谱特点分别设置脉冲连续波的干扰频率覆盖范围。以码跟踪误差作为干扰效果评估指标，对不同干扰环境下采用窄带非相干延迟锁定环的GPS 接收机码跟踪性能进行仿真分析。仿真结果表明：脉冲连续波干扰对不同伪随机噪声码(PRN)编号和副载波调制相位下的C/A码和M码信号影响是不同的，在相同干信比(JSR)条件下，脉冲连续波的干扰效果要优于宽带高斯噪声和匹配谱干扰。
침대단빈련속파간우겁역통과빈역려파가이억제，이관대련속조새식간우우존재간우효솔저하적문제，제출맥충련속파저충신적관대소상란조식간우양식。근거 C/A 마、P(Y)마화 M 마신호공솔보특점분별설치맥충련속파적간우빈솔복개범위。이마근종오차작위간우효과평고지표，대불동간우배경하채용착대비상간연지쇄정배적GPS 접수궤마근종성능진행방진분석。방진결과표명：맥충련속파간우대불동위수궤조성마(PRN)편호화부재파조제상위하적C/A마화M마신호영향시불동적，재상동간신비(JSR)조건하，맥충련속파적간우효과요우우관대고사조성화필배보간우。
Aiming at the problem that a Continuous Wave (CW) is easy to be suppressed by the frequency domain filtering and the efficiency of a broadband continuous blanket jamming is low, this paper presents a new broadband comb spectrum jamming type which is called single pulse CW. The jamming frequency domain range of single pulse CW is set respectively according to the power spectral density characteristic of C/A code, P(Y) code and M code signal. Taking code tracking error as the evaluation index of jamming effect, the GPS receiver code tracking performance of using a narrowband non-coherent delay lock loop is simulated and analyzed under different jamming circumstance. The simulation results show that the influence of single pulse CW jamming to C/A code and M code with the different Pseudo Random Noise Code (PRN) and phase of modulating sub-carrier are different, under the same Jamming-to-Signal Ratio (JSR) condition, the jamming effect of single pulse CW is better than the broadband Gaussian noise and matched spectrum.