Open AccessPseudo‐random frequency hopping fuze technology based on signal reconstruction
Author(s) -
Tu Youchao,
Si Chen,
Wu Wei
Publication year - 2016
Publication title -
iet signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.384
H-Index - 42
ISSN - 1751-9683
DOI - 10.1049/iet-spr.2015.0410
Subject(s) - fuze , signal (programming language) , computer science , missile , frequency hopping spread spectrum , filter (signal processing) , channel (broadcasting) , algorithm , matched filter , signal processing , telecommunications , computer vision , radar , engineering , materials science , metallurgy , programming language , aerospace engineering
To solve the problems of poor fixed distance precision and difficult engineering implementation of the pseudo‐random frequency hopping fuze, a new signal processing method for the fuze based on signal reconstruction is proposed in this study. First, the transmitted signal is used to generate a set of local reference signals for the matched filter. Then all the local reference signals are applied to coherent integrate with the reflected echo, respectively. Finally, any channel of these correlation peak values exceeding the presupposed threshold can be taken as fixed distance successfully. Furthermore, the relative speed between the missile and target can be approximately estimated by the corresponding channel number. The simulation results show that the method can detect the target precisely, which means that the problem of mismatched filter has been solved. Moreover, the method is easy to be implemented, which can greatly improve real‐time property of the fuze, thus it has practical value for engineering application.