Distance Measuring Equipment Pulse Interference Suppression Based on Wavelet Packet Analysis  

作　　者：Qiao Yao Kewen Sun Qiao Yao;Kewen Sun(Hefei University of Technology, Hefei, China)

机构地区：[1]Hefei University of Technology, Hefei, China

出　　处：《Advances in Aerospace Science and Technology》2021年第1期67-79,共13页航空科学与技术（英文）

摘　　要：As an indispensable part of </span><span style="font-family:Verdana;">global</span><span style="font-family:Verdana;"> 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 </span><span style="font-family:Verdana;">DME</span><span style="font-family:Verdana;"> 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 </span><span style="font-family:Verdana;">threshold</span><span style="font-family:Verdana;">, function type and decomposition series are discussed to prove the validity of the selected parameters on the pulse interference suppression</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">.As an indispensable part of </span><span style="font-family:Verdana;">global</span><span style="font-family:Verdana;"> 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 </span><span style="font-family:Verdana;">DME</span><span style="font-family:Verdana;"> 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 </span><span style="font-family:Verdana;">threshold</span><span style="font-family:Verdana;">, function type and decomposition series are discussed to prove the validity of the selected parameters on the pulse interference suppression</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">.

关 键 词：Global Navigation Satellite System Rangefinder Pulse Jamming Wavelet Packet Decomposition 

分 类 号：TN9[电子电信—信息与通信工程]