窄脉冲激光的收发与幅度测量
发布时间：2018-10-21 10:00
【摘要】：纳秒级窄脉冲激光因其脉冲宽度极短、脉冲信号的上升沿快、拥有极低的占空比,同时纳秒窄脉冲还具有普通激光具有的单色性良好、响应速度快、适合远距离探测等特点。其技术优势决定了其具有非常广阔的应用范围,在一些军事领域例如激光制导、脉冲激光雷达,和一些民用领域如激光测距等均有较为广泛的应用。在纳秒窄脉冲信号的的收发与测量系统中因脉冲宽度极短、信号的上升沿快等技术特性同时决定了窄脉冲信号的接收与测量系统需要具有较高的ADC采样速率和芯片对数据的处理能力。脉冲信号的宽度在纳秒量级是制约这些因素的关键问题,如何不使用超高速ADC采集芯片的前提下实现对纳秒脉冲信号的数据采集与测量一直是纳秒窄脉冲激光应用领域急需解决的关键问题。本文主要针对纳秒级窄脉冲激光信号的技术特点,设计出纳秒级窄脉冲信号激光信号的收发与测量系统。根据窄脉冲激光的技术特性,首先设计了窄脉冲激光的发射系统,针对发射系统的技术细节进行仔细的研究和试验,利用电容的充电放电的过程产生纳秒窄脉冲激光信号,实现了纳秒级窄脉冲激光发射系统的设计。同时根据发射系统产生的纳秒窄脉冲激光信号的特点,设计出与纳秒窄脉冲激光发射系统相匹配的接收与测量系统,包括硬件设计和软件设计部分。其中硬件设计中提出了对纳秒窄脉冲信号进行脉冲信号的拓宽处理,将纳秒级的窄脉冲信号通过脉冲拓宽电路拓宽至微秒级,这样的处理可极大的降低窄脉冲信号对后级ADC采样速度的要求,不仅降低了系统的成本而且电路的复杂性也进一步的降低。将窄脉冲信号进行拓宽处理后送至TMS320F28335DSP进行数据的采集与处理,通过程序的编写找出窄脉冲信号的峰值的大小和峰值的位置信息。最后对示波器采集的窄脉冲信号各个位置的脉冲波形图进行分析,总结系统的优势与不足,提出系统的改进意见。
[Abstract]:Nanosecond narrow pulse laser is characterized by its very short pulse width, fast rising edge of pulse signal and extremely low duty cycle. At the same time, nanosecond narrow pulse laser has the characteristics of good monochromaticity, fast response speed and suitable for long range detection. It has a wide range of applications due to its technical advantages. It is widely used in some military fields such as laser guidance, pulsed laser radar, and some civil fields such as laser ranging. In the transmission and measurement system of nanosecond narrow pulse signal, the pulse width is very short. The rapid rise edge of the signal determines that the receiving and measuring system of the narrow pulse signal should have high ADC sampling rate and the chip processing ability to the data. The pulse width in nanoseconds is the key problem that restricts these factors. How to realize the data acquisition and measurement of nanosecond pulse signal without using ultra-high speed ADC acquisition chip has always been a key problem in the application field of nanosecond narrow pulse laser. Aiming at the technical characteristics of nanosecond narrow pulse laser signal, this paper designs the receiving, sending and measuring system of nanosecond narrow pulse laser signal. According to the technical characteristics of narrow pulse laser, a narrow pulse laser transmitting system is designed, and the nanosecond narrow pulse laser signal is generated by the charge and discharge process of capacitance, which is carefully studied and tested according to the technical details of the transmission system. The design of nanosecond narrow pulse laser emission system is realized. According to the characteristics of the nanosecond narrow pulse laser signal produced by the transmitting system, a receiving and measuring system, including hardware design and software design, is designed to match the nanosecond narrow pulse laser transmitting system. In the hardware design, it is proposed that the nanosecond narrow pulse signal be widened to the microsecond level through the pulse widening circuit, and the nanosecond narrow pulse signal can be widened to the microsecond level by the pulse widening circuit. This process can greatly reduce the requirement of the ADC sampling speed for the narrow-pulse signal, not only reduce the cost of the system but also reduce the complexity of the circuit. The narrow pulse signal is broadened and sent to TMS320F28335DSP for data acquisition and processing. The size and position of the peak value of the narrow pulse signal are found by programming. Finally, the pulse waveform of each position of the narrow pulse signal collected by oscilloscope is analyzed, the advantages and disadvantages of the system are summarized, and the improvement suggestions of the system are put forward.
【学位授予单位】：哈尔滨师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN24
本文编号：2284767
[Abstract]:Nanosecond narrow pulse laser is characterized by its very short pulse width, fast rising edge of pulse signal and extremely low duty cycle. At the same time, nanosecond narrow pulse laser has the characteristics of good monochromaticity, fast response speed and suitable for long range detection. It has a wide range of applications due to its technical advantages. It is widely used in some military fields such as laser guidance, pulsed laser radar, and some civil fields such as laser ranging. In the transmission and measurement system of nanosecond narrow pulse signal, the pulse width is very short. The rapid rise edge of the signal determines that the receiving and measuring system of the narrow pulse signal should have high ADC sampling rate and the chip processing ability to the data. The pulse width in nanoseconds is the key problem that restricts these factors. How to realize the data acquisition and measurement of nanosecond pulse signal without using ultra-high speed ADC acquisition chip has always been a key problem in the application field of nanosecond narrow pulse laser. Aiming at the technical characteristics of nanosecond narrow pulse laser signal, this paper designs the receiving, sending and measuring system of nanosecond narrow pulse laser signal. According to the technical characteristics of narrow pulse laser, a narrow pulse laser transmitting system is designed, and the nanosecond narrow pulse laser signal is generated by the charge and discharge process of capacitance, which is carefully studied and tested according to the technical details of the transmission system. The design of nanosecond narrow pulse laser emission system is realized. According to the characteristics of the nanosecond narrow pulse laser signal produced by the transmitting system, a receiving and measuring system, including hardware design and software design, is designed to match the nanosecond narrow pulse laser transmitting system. In the hardware design, it is proposed that the nanosecond narrow pulse signal be widened to the microsecond level through the pulse widening circuit, and the nanosecond narrow pulse signal can be widened to the microsecond level by the pulse widening circuit. This process can greatly reduce the requirement of the ADC sampling speed for the narrow-pulse signal, not only reduce the cost of the system but also reduce the complexity of the circuit. The narrow pulse signal is broadened and sent to TMS320F28335DSP for data acquisition and processing. The size and position of the peak value of the narrow pulse signal are found by programming. Finally, the pulse waveform of each position of the narrow pulse signal collected by oscilloscope is analyzed, the advantages and disadvantages of the system are summarized, and the improvement suggestions of the system are put forward.
【学位授予单位】：哈尔滨师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN24
【相似文献】
相关期刊论文 前2条
1 谭敬;刘惠;何灼容;孙力军;;低重频窄脉冲光稳偏技术研究[J];半导体光电;2011年03期
2 ;[J];;年期
相关会议论文 前3条
1 廖兴亮;曾刚;;冲激引信中窄脉冲产生电路的设计[A];2009年全国微波毫米波会议论文集（下册）[C];2009年
2 罗凡;陈金鹰;郑恭明;;浅析UWB技术[A];四川省通信学会2006年学术年会论文集（二）[C];2006年
3 肖今新;;水声阻抗管的宽带窄脉冲信号测量方法[A];第十届船舶水下噪声学术讨论会论文集[C];2005年
相关硕士学位论文 前4条
1 杨凯强;窄脉冲激光探测与测距技术研究[D];西安工业大学;2014年
2 于红岩;窄脉冲激光的收发与幅度测量[D];哈尔滨师范大学;2015年
3 沈红彬;窄脉冲功率电源研究[D];西安理工大学;2009年
4 刘聪;S波段窄脉冲信号源设计[D];电子科技大学;2012年
，本文编号：2284767
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2284767.html
