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A non-complete spatial overlapped interference signal model is proposed based on the jamming research against satellite-based positioning receiver for the acquisition of navigation signal. Firstly, the interference model is introduced and analyzed, and the signal fission effect induced by non-complete spatial overlapped interference is demonstrated. Then, the relationship between SINR of satellite-based positioning receiver and spatial overlapped length is derived, and the monotonic relationship of them is deduced. Simulation results suggest that SINR of satellite-based positioning receiver is the monotonically increasing function of spatial overlapped length, and the short-spatial-overlapped interference can restrain the peak amplitude of three dimensional frequency and coded domain correlation, degrading the performance of acquisition of satellite-based positioning receiver.
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