| The smart mine will be the most important weapon system to defend arming helicopter hedgehopping in future war. With the researching of the national defence pre-researching project which is the research of acoustics compound fuse of anti-helicopter smart mine, on the basis of helicopter's orientation with acoustics fuse detection, achieving precise orientation with infrared detection, and getting mine's inter-angle aim's current position.In order to satisfy "the need of real-time and accuracy of the system, we use high performance floating DSP TMS320C6711 as core processor and design the infrared detecting and signal processing circuit. Combining the helicopter's infrared wavelength characteristic, we choose 1~3um infrared band to detect with position sensitive detection(PSD). We calculate the position with DSP in signal processing circuit so as to avoid the limitation of analog operation with normal PSD detecting circuit.According to flight trait of helicopter, we model the flight route, on the basis of this, we gain predicting parameter of flight route, striking angle , striking distance. We also simulate the parameter prediction with computer. The result proves model designed in reason, deducing formula exactly. |
