The invention discloses single-frequency and multi-frequency GNSS
signal narrow-band interference suppression devices, systems and methods, wherein the multi-frequency GNSS
signal narrow-band interference suppression
system comprises at least one pre-
processing module, at least one cache
processing module, at least one cache control module, at least one
delay module, a
multiplexing module, a windowing
processing module, a FFT calculation module, a NBI filter processing module, an IFFT calculation module, a demultiplexing module, at least one overlapped processing module and a
time division multiplexing control module. According to the single-frequency and multi-frequency GNSS
signal narrow-band interference suppression devices, systems and methods in the invention, narrow-band interferencesuppression on single-frequency and multi-frequency GNSS signals can be carried out; the suppression effect is good; furthermore, the hardware resource cost and the
system power consumption can be reduced; and the practicability is relatively high.