GPS receiver interference nuller with no satellite signal distortion

摘要

Interference in a GPS receiver in minimized while preserving the GPS satellite signal in a system having N antenna elements for receiving the interference signal and the satellite signal and multiple tapped delay line structures connected to the antenna elements for filtering the signals received by the antenna elements based a plurality of filter coefficients. The filter coefficients are determined such that the plurality of filter coefficients equals 1 $R_{\tilde{x}\tilde{x}}^{-1}{C\left[C^H{R}_{\tilde{x}\tilde{x}}^{-1}C\right]}^{-1}F\mathrm{wherein}{C}^H\tilde{w}=F,$ wherein {tilde over (w)} equals the plurality of filter coefficients, R{tilde over (xx)} equals a covariance matrix, and C and F are determined to preserve a frequency spectrum of the GPS satellite signal.