Effect of Narrowband Interference Suppression on Pseudorandom Code Zero Value

doi:10.3969/j.issn.1000-1093.2016.02.015

Abstract

Abstract: Effect of narrowband interference suppression (NBI) on pseudorandom code zero value in PN code ranging system is presented. The equivalent filter model for classic NBI suppression algorithm is used to establish a model of analyzing the effect of NBI suppression on code phase bias. The relationship between the code phase zero value bias and equivalent filter characteristic is determined, and a simplified analytical model is proposed. Both theoretical analysis and simulations illustrate that the linear phase filter has no effect on code phase zero value; nonlinear phase filter has an effect on carrier phase zero value, which is directly related to the convolution results of the weights of filter and pseudo-code autocorrelation function.

Key words: information processing technology, pseudo-code ranging, narrowband interference suppression, code phase zero value, phase-frequency characteristic

CLC Number:

TN96

LIU Yong-qing， JIANG Shuo， YU Dong， SHAO Xiao-tian. Effect of Narrowband Interference Suppression on Pseudorandom Code Zero Value[J]. Acta Armamentarii, 2016, 37(2): 293-298.

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