CAJ | 학술논문

针对带限高斯噪声干扰效率低下的问题，以GPS接收机码跟踪误差和星历误码率作为干扰效果评估准则，在分析GPS C/A码、P( Y)码和M码信号功率谱特点的基础上，通过对干扰带宽影响码跟踪和星历解调过程进行理论推导，定性的判断出最佳干扰带宽的存在。定量的仿真分析结果表明：对于C/A码信号，当干信比较小时，要充分考虑到误码率的影响，将造成码跟踪误差最大的干扰带宽减小一些，作为其最佳干扰带宽；而对于P( Y)码和M码信号，应选择造成码跟踪误差最大的干扰带宽，作为其最佳干扰带宽。
침대대한고사조성간우효솔저하적문제，이GPS접수궤마근종오차화성력오마솔작위간우효과평고준칙，재분석GPS C/A마、P( Y)마화M마신호공솔보특점적기출상，통과대간우대관영향마근종화성력해조과정진행이론추도，정성적판단출최가간우대관적존재。정량적방진분석결과표명：대우C/A마신호，당간신비교소시，요충분고필도오마솔적영향，장조성마근종오차최대적간우대관감소일사，작위기최가간우대관；이대우P( Y)마화M마신호，응선택조성마근종오차최대적간우대관，작위기최가간우대관。
Aim at the problem of low efficiency of band-limited Gaussian noise jamming, using code tracking error and ephemeris bit error rate of GPS receiver as the jamming effect evaluation index, on the basis of analysis characteristics of GPS C/A code, P( Y) code and M code signal power spectral density, to carry on the theoretical derivation about jamming bandwidth influence code tracking and ephemeris demodulation process, the existence of optimal jamming bandwidth is judged qualitative. The quantitative simulation results show that when the JSR is small, the bit error rate influence should be fully considered, the jamming bandwidth which causes the biggest code tracking er-ror should reduce a little as the best jamming bandwidth for C/A code signal, the best jamming bandwidth should choose the jamming band-width which causes the biggest code tracking error for the P( Y) code and M code signal.