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The group delay will be flat assuming the filter is linear phase (which means the phase is linear vs frequency). Group delay is the derivative of phase with respect to frequency. Either unwrap your phase and detrend it or use the group delay function that is part of scipy.signal to evaluate directly. Any FIR filter (not just the Gaussian) will be linear ...


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In order to work well, a jamming signal must be well-correlated with the signal it is trying to jam. In the case of sine-wave modulated signals, it's easy to detect the signal one wishes to jam, to infer that it's narrowband (and, hence, riding on a real or suppressed sine-wave carrier), to infer its bandwidth, and from there to choose a suitable jamming ...


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There are a few things going on here: Does this thought process look correct? Strictly, No. The main reason for this is that you are not performing a resampling step that is the differentiating point between the Discrete Fourier Transform (DFT) and order analysis. Is it correct to say that the final fft plot is in the frequency domain? From this link,...


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