As an indispensable part of global satellite navigation system, the frequency band of DME will overlap with that
of the navigation signal, which will cause the signal from the DME platform to
be accepted by the Global Navigation Satellite System receiver and form
interference. Therefore, it is of great significance to study an effective
algorithm to suppress DME pulse interference. This paper has the following
research on this problem. In this paper, wavelet packet transform is used to
solve for the suppression of DME pulse
interference method, wavelet packet analysis belongs to the linear
time-frequency analysis method, it has good time-frequency localization
characteristics and the signal adaptive ability, due to the function of wavelet
packet and parameter selection of DME will affect the ability of interference
suppression, combining with the theory of wavelet threshold, function type and decomposition series are discussed to
prove the validity of the selected parameters on the pulse interference
suppression.
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