<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\begin{abstract}[cn]

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  \keywords{æ¿€å…‰æ‰“é¶, ä¿¡å·å¤„ç†, ä¿¡å·ç¼–ç&nbsp;, ä¸²è¡Œä¼&nbsp;è¾“}
\end{abstract}

\begin{abstract}[en]

  The main aim of this thesis is to design and realize signal processing of a self-developed laser target shooting system and then realize the whole laser target shooting system. The laser target shooting system consists of semiconductor laser gun, photoelectric detector, and signal processing circuit, which is the key part of the whole system. Laser target shooting process go though following steps: laser gun emitted a pulse of laser, which would be received by the laser target and the results of shooting will be shown on screen of computer by series signal processing. The laser target consists of some silicon photoelectric units that were encoded with different numbers according to certain rule. The result of the shooting will be got when detecting the number of the photoelectric unit that receives the laser pulse.

  The signal processing of the laser target shooting system mainly consists of signal amplification, signal encoding and data transmission. The inspected photoelectric signal was then amplified by operator amplifiers, coded by multiplex priority encoder according to the prearranged rule, and then transferred to computer by 89C2051 MCU through its serial port. And then computer can process the signal. The program of 89C2051 MCU is designed in keil and debugged using keil compiler. It is designed to control the data transmission with computer.
  
  The designed signal processing system can detect signal effectively. Through the serial data transmission, computer can process the shooting result, such as display, statistics and storage etc. It provide direct and exact shooting result for trainer, so it can increase the efficiency of the shooting training.

\keywords
{
  laser target shooting, signal amplification,
  signal encode, serial data transmission
}
\end{abstract}</pre></body></html>