| With the rapid development of modern radar technology, whether in the area of civilian or military using, the radar systems have been widely applied. Because that the radar video simulating technology is so economic, applicable and repeatable, it is significant to research the signal of the radar simulation for the design, testing and training of radar system. At the same time, due to the rapid development of digital electronic technology and the large scale integrated circuit, the radar video is simulated from the traditional simulating methods, to the present application of the digital computer software and the hardware together.In this paper, we study the stimulation of radar video based on the real radar video:(1) We analysis the actual radar video which has been acquired, then, we get the characteristics of the radar targets by using the software of image processing, at last,using these kinds of features of the radar targets establishes the data file.(2) We generate the trigger pulse of the distance and the ship head pulse of the direction in Visual C++, reading the characteristics of the radar targets from the data file; at this time, we make the radar video signal, the trigger pulse of the distance and the ship head pulse of the direction be synthesized to achieve the combined radar stimulated video; and then, the digital signal of the combined radar stimulated video is converted into the analog signal by using M2i6105board through the PCI interface, as the input of signal separated circuit.(3) We design the signal separating circuit using the limiter circuit and the voltage comparison circuit, then we have the synthesized signal to be separated into the radar video signal, the trigger pulse of the distance and the ship head pulse of the direction through the signal separated circuit, as the input of the radar signal processing unit.(4) The whole system is debugged, and the test results are also analyzed. |
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