Analysis of Jamming Parameters Selecting of Band-limited Gaussian Noise to GPS Military Signals
MAO Hu
WU De-wei
Abstract：For the sake of improving j amming efficiency of band-limited Gaussian noise to GPS military sig-nals,this paper use code tracking error of GPS receiver as the j amming effect evaluation index to optimize band-limited Gaussian noise jamming frequency offset and bandwidth under given JSR.On the basis of a-nalysis GPS P(Y)code and M code signal power spectrum characteristics,according to operating principle of non-coherent early-minus-late power DLL,the expression between j amming frequency offset and band-width with code tracking error is obtained through theoretical derivation.Based on practical condition to set the DLL parameters of receiver,the efficient band-limited Gaussian noise j amming frequency offset and bandwidth to P(Y)code and M code signal is simulated and calculated quantitatively under the different JSR respectively.Taking the minimum JSR of causing DLL lock-lose as primary opting criterion,at the same time to consider the influence of j amming implement complexity and frequency domain filtering,the conclusion of comprehensive compare show that when the JSR within 50~60 dB,the jamming frequency offset and bandwidth to P(Y)code is set to 0 and 8.8 MHz respectively,the jamming frequency offset to M code of BOCsin and BOCcos modulation is set to 9.833 MHz and 10.9 MHz respectively,the jamming bandwidth is set to uniform 10 MHz.
Keywords：P(Y)code and M codeCode tracking errorJamming frequency offsetJamming bandwidthJ SR
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 58-62 )