High-precision positioning method of satellite navigation in interference mode
To enhance the anti-interference ability of satellite navigation positioning in deceptive interference mode,a high-precision positioning method based on deceptive interference mode was designed for satellite navigation.A mathematical model of deceptive interference signals composed of basic data and signal vibration amplitude of deceptive interference signals was constructed.Carrier phase,signal-to-noise ratio,Doppler frequency shift,and pseudo-range were selected as characteristic parameters for the transmission,reception,and calculation of deceptive interference signals.A support vector machine classification model was used to identify deceptive interference signals in satellite navigation signals and suppress deceptive interference sources to obtain real satellite navigation signals.By eliminating the ionospheric delay in the equation through dual-frequency ionospheric correction,the final observation equation was obtained,and high-precision positioning was achieved by solving the final observation equation using the least squares method.The experimental results show that the positioning accuracy of this method exceeds 90%,with an average positioning accuracy of 94.44%,which is superior to comparative methods.It indicates that this method can achieve high-precision positioning of satellite navigation in deceptive interference mode.
国家科技期刊平台
NSTL
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