This spike-rejection filter can be seen as a kind of repetition decoder.
2.
Scalloping for pulse-Doppler radar involves blind velocities created by the clutter rejection filter.
3.
This image rejection filter does not need great selectivity, but as the receiver is tuned to different frequencies it must " track " in tandem with the LO.
4.
In signal processing, a "'band-stop filter "'or "'band-rejection filter "'is a frequencies unaltered, but attenuates those in a specific range to very low levels.
5.
For observing the sun, a much narrower band filter can be made from three parts : an " energy rejection filter " which is usually a piece of red glass that absorbs most of the unwanted wavelengths, a nm ) range of wavelengths of light centred on the H-alpha emission line.
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