| Due to the independent operation of radar,electronic warfare and communication system on navy's traditional warships,the degree of information fusion of these equipments is not high enough.Some of them are very heavy,with large radar cross-sectional area.In recent years,new warships have gradually begun to use integrated radio frequency systems,which solves various problems caused by the increase of electronic equipments on warships.So,the hardware has been shared by the radar,electronic warfare and the communication system.Furthermore,if these three systems can share signals,the integration of detection,jamming and communication will be achieved in the true sense.In this paper,firstly,the rationality and feasibility of random frequency-hopping signal being shared by detection and jamming are discussed.The architecture of the waveform is designed to work with the wideband jamming signals.Characteristics of random frequency-hopping signal are analyzed and the principles of parameter selection are discussed.The selection of frequency hopping interval is analyzed in detail.Secondly,the side lobe of random frequency-hopping signal is discussed.Results of side lobe suppression and loss of signal to noise ratio of sidelobe suppression filter based on IRLS algorithm and spectral correcting filter are respectively studied.The performance of sidelobe suppression filter based on IRLS algorithm of different lengths are analyzed.Aiming at the high loss of signal to noise ratio of spectrum correcting filter,an adjusting factor is introduced to link the spectrum correcting filter with the matched filter.The influencing factors of spectrum correcting filter with adjusting factor are analyzed.The performance of sidelobe suppression filter based on IRLS algorithm and spectral correction filters is compared.At last,simulation of jamming to the shipborne radar and detection to the warship and antiship missile are carried out,which proves the feasibility and practicability of shared signal. |
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