伪随机序列激光制导信号产生与分析

都元松, 罗威, 董睿杰, 等. 伪随机序列激光制导信号产生与分析[J]. 光电工程, 2019, 46(9): 180475. doi: 10.12086/oee.2019.180475
引用本文: 都元松, 罗威, 董睿杰, 等. 伪随机序列激光制导信号产生与分析[J]. 光电工程, 2019, 46(9): 180475. doi: 10.12086/oee.2019.180475
Du Yuansong, Luo Wei, Dong Ruijie, et al. Generation and analysis of pseudo-random sequence laser guidance signal[J]. Opto-Electronic Engineering, 2019, 46(9): 180475. doi: 10.12086/oee.2019.180475
Citation: Du Yuansong, Luo Wei, Dong Ruijie, et al. Generation and analysis of pseudo-random sequence laser guidance signal[J]. Opto-Electronic Engineering, 2019, 46(9): 180475. doi: 10.12086/oee.2019.180475

伪随机序列激光制导信号产生与分析

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  • 中图分类号: TB872

Generation and analysis of pseudo-random sequence laser guidance signal

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  • 针对现有激光主动制导武器导引头易受欺骗式干扰的技术现状,提出了采用伪随机序列编码提高其抗干扰性能的新构想。利用伪随机序列抗干扰性能较好的特点,可以使激光主动探测目标系统既能实现远距离主动探测目标,又能有效防止外界干扰,提高系统性能的可靠性。本文结合Arduino IDE、Arduino UNO R3单片机、示波器与YAG激光器等实验仪器,设计并实现了一种抗干扰性能良好的伪随机序列激光制导信号产生系统。该系统可以用于新型目标指示器的研究。

  • Overview: In view of the current state of the technology of the laser-guided weapon system that is vulnerable to fraudulent interference, a new idea using random sequence coding is proposed to improve its anti-jamming performance. The purpose is to design a laser target indicator that is simple in structure, small in computation, and capable of achieving strong anti-interference ability and relatively difficult to crack. Because the pseudo-random sequence has strong anti-interference, difficult to crack and easy to implement, this paper applies the anti-interference characteristics of pseudo-random sequence to laser guided weapons. The laser active detection target system can not only achieve long-distance active target detection, but also effectively prevent external interference and improve the reliability of the system. The guidance signal is designed by using Matlab computing software. The signal is coded by changing the interval between pulse and pulse. Experimental platform is developed by Matlab software the Arduino IDE software, analogue oscilloscope and Arduino UNO R3 microcontroller, and GDS-2000 digital oscilloscope, etc, to produce simulated experiment platform to generate laser control signal. The simulated experiment verifies the generation of the pseudo-random sequence indication signal. Three kinds of target indication signals are designed. In order to generate a laser-guided signal of random-pseudo sequence in pulse widths and intervals, the control signal above-mentioned is applied to a FIRDP-1064 YAG laser which is measured by a WKWR-1 waveform detector. Under the laboratory conditions, a laser-guided signal that can be used for laser-guided weapons can be obtained. The experiment simulates the process of receiving diffuse reflection echo by laser guided weapon seeker, the laser guidance signal is pointed to the wall, and the detector receives diffuse reflection laser signal from the wall. After decoding, analysis and signal processing, it is determined that the received diffuse reflection laser echo is the indicator signal. By comparing the characteristics of the three types of target indication signals, it can be seen that the third type of target indication signal is a random signal similar to a pseudo-random sequence, which has the characteristics and complexity of pseudo-random sequence coding, and also reduces the speed of change and the difficulty of decoding. Combined with software and hardware, the signal generation system is designed and implemented by combining Arduino IDE, Arduino UNO R3 microcontrollers, with oscilloscopes and YAG lasers, with good anti-interference performance. The results show that the system is stable, and all parameters meet the design requirements. For laser guidance research, this study can provide a design solution for target indicators of laser-guided weapons to counter interference. The system can be used for the study of new laser target indicators.

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  • 图 1  激光控制信号产生仿真设备连接实物图。

    Figure 1.  Laser control signal generation simulation equipment connection.

    图 2  伪随机序列模拟仿真实验脉冲

    Figure 2.  Random sequence simulation experiment pulse

    图 3  伪随机序列控制信号示波器波形

    Figure 3.  Random sequence control signal oscilloscope waveform

    图 4  控制信号整体效果图

    Figure 4.  Control the overall effect of the signal

    图 5  示波器屏幕显示

    Figure 5.  Oscilloscope screen display

    图 6  控制信号整体效果图

    Figure 6.  Control the overall effect of the signal

    图 7  示波器屏幕显示

    Figure 7.  Oscilloscope screen display

    图 8  控制信号部分效果图。

    Figure 8.  Control signal part effect diagram.

    图 9  示波器屏幕显示。

    Figure 9.  Oscilloscope screen display.

    图 10  实验装置图。

    Figure 10.  Experimental setup diagram.

    图 11  制导信号整体效果图

    Figure 11.  Overall renderings of the guidance signal

    图 12  单个脉冲信号波形

    Figure 12.  Single pulse signal waveform

    图 13  制导信号整体效果图

    Figure 13.  Overall renderings of the guidance signal

    图 14  示波器屏幕显示

    Figure 14.  Oscilloscope screen display

    图 15  制导信号部分效果图。

    Figure 15.  Part renderings of the guidance signal.

    图 16  示波器屏幕显示。

    Figure 16.  Oscilloscope screen display.

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出版历程
收稿日期:  2018-09-11
修回日期:  2018-11-05
刊出日期:  2019-09-30

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