Research On Detection Technology Based On Missile-borne Data Link Signal

With the proposal and formation of new military transformation idea, theapplication of data link technology is becoming more and more widely in tactical andstrategic missile, at the same time it is given more combat missions. Missile-borne datalink is the platform to link missile and launch, the intermediary of missile and missile,missile and command and control center, as well as the bridge to realize the informationchain movement and key equipment of missile intelligent. The application ofMissile-borne data link can make the missile penetration ability stronger, thecomprehensive combat effectiveness higher, motor response ability faster, search targetability more accurately. It can be said the missile-borne data link is the lifeline of futuretactical and strategic missile and is the multiplier to improve the effectiveness of missilecomprehensive combat.In view of the importance of missile-borne data link in future information warfare,carring out the research on detection technology based on missile-borne data link signalhas important theoretical and practical significance. The research on detetion technology ofthe DS and FH missile-borne data links is carried out thoroughly as missile-borne data linkapplies different spectrum mechanism. First of all, signal generating mechanism of twokinds of missile data link is studied. The direct spread spectrum technology and BPSKmodulation are studied in the research of the DS missile-borne data link signal. Thefrequency hopping technology and MSK modulation are studieed in the research of theFH missile-borne data link signal. Secondly, signal separation of two kinds ofmissile-borne data link is deeply studied by using the JADE blind source separationalgorithm in the complex electromagnetic environment. Thirdly, signal detection of twokinds of missile-borne data link is analysed and studied thoroughly. The detection of DSmissile-borne data link signal is realized by using the good autocorrelationcharacteristics of the DS missile-borne data link signal for the DS missile-borne datalink signal is detected by using orthogonal correlation detection method. The detectionof the FH missile-borne data link signal is realized by using the different correlationcharacteristics between one hop and different hops for the FH missile-borne data linksignal is detected by using multi-hop autocorrelation detection method. Finally, the parameter estimation technology of two kinds of missile-borne data link signals isstudied. The carrier frequencies estimation is realized for the carrier frequencies of theDS missile-borne data link signal and FH missile-borne data link signal apply the squareof frequency doubling method. The signal PN chip-rate estimation is realized for thesignal PN chip-rate of the DS missile-borne data link applies delay and multiplicationmethod. The dwell time and hop rate estimation are studied for the dwell time and hoprate of the FH missile-borne data link signal apply SPWVD (smoothing Wigneralgorithm realization of distribution) algorithm. Based on theoretical research, the keymethods have been modeled and designed, which are implemented and analysed withMATLAB7.1simulation platform. The correctness and effectiveness of methods areverified by simulation results.