Chaotic Integrated System Of Radar And Jammer And Its Sharable Signal

In the first place, the dissertation analyzed the feasibility and necessity of the integrated radar and reconnaissance jammer based on the sharable transmittion signal (sharable energy). The basic concept of radar and jammer and the common-used chaotic systems and their coding methods were discussed. The sharable signal modulated with chaotic signal or chaotic code was studied. It is called as sharable signal of chaotic integrated system of radar and jammer.Secondly, based on the modular and digital idea, an intelligent hardware system project of chaotic integrated system was constructed, which composed chaotic coding generator, integrated transmitter, integrated receiver, digital base-band processor, graphic user interface, power manager and radar parameter recognition. Because of using programmable RISC chip in digital control module such as chaotic coding generator, the open and programmable hardware project can load intelligent windows CE operating system.Thirdly, the mathematic formulae and waveforms of sharable signal with different chaotic modulation methods were studied. And the sharable signal with double chaotic code modulation under the condition that the T/R switch was controlled by chaotic code was also studied. The basic property of ambiguity function, correlation character and power spectra was analyzed. As for the sharable signal with chaotic modulation, some digital side-lobe suppression methods were proposed, such as statistical method, threshold window method, wavelet decomposition method and projection suppression method. And the adaptive filter and particle filter technology based on the sharable signal was also suggested.Fourthly, as for distance and velocity measurement and cover and cheat jamming, the dissertation discussed the performance of the sharable signal and analyzed its effect on the opposite radar receiver and echo signal detection. And the effective observation and jamming time of single T/R system was also discussed.Finally, using functional and signal simulation in detecting object and covering or cheating radar, the dissertation gets some good simulation results with mathematical model and simulation test of chaotic integrated system. And the feasibility and practicability of chaotic integrated system and its sharable signal are approved.