Missile Target Echo Signal Simulation System

Modern warfare has developed into a high-tech information warfare. With precision-guided missile technology,Information-based missiles has become a local anti-war primary means of physical. In the current generation of missile war playing an increasingly important role. Day-to-day missile missile detection is to protect the maximum efficiency in times of war can play an important part.The main task of this task is to design a set of properties for the detection of the missile target echo signal simulation system. To do an in-depth study of the radar-guided missile approach, Study on semi-active missile guidance process, The use of frequency synthesis technology more advanced Direct Digital Synthesis Technology, Choose to use chip AD9851, Designed a set of single-chip microcomputer-based direct digital frequency synthesizer signal source systems as a missile target simulation system echo.Through the analysis of the subject design objectives, a clear simulation system to achieve the target. Missile target system analog signals need to achieve the directive under the control of direct simulation of pulsed-wave Doppler radar and echo signal. It can achieve single-frequency output, continuous output frequency, noise and frequency of mixed-frequency output. In the article, first of all to introduce a missile homing guidance and Doppler effect, and then introduced the system design process. And then elaborate on the direct digital synthesizer of the structure and principle, Signal source is the AD9851 chip production. Mixer noise source design and system design of peripheral circuits, At the same time, the actual production and debugging circuits, and finally test the whole system.System test results to normal, and adopted a live-fire testing, the basic design to achieve the objectives of the subject.