利用边缘技术探测进行激光布里渊散射雷达频移分析
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摘要
针对传统激光布里渊散射雷达频移分析方法存在效率低下的问题,利用边缘技术探测对传统分析方法进行改进。首先借助边缘探测技术获取初始激光束,并分析示波器上的频线展宽光谱,得出激光的初始信息以及信号强度的关系式,在此基础上建立布里渊散射雷达回波信号方程,结合信号能量与布里渊散射频移的表达式,得出雷达频移的分析结果与相应的取值范围。经过与传统分析方法的对比实验,发现2种方法得到相似分析结果时所消耗的时间不同,改进后的方法比传统方法节省44 s,因此具有更高的分析效率。
Aiming at the inefficiency of the traditional frequency shift analysis method of laser Brillouin scattering radar, edge detection is used to improve the traditional analysis method. Firstly, the initial laser beam is obtained by edge detection technology, and the spectrum of frequency line broadening on oscilloscope is analyzed. The relationship between the initial information of laser and signal intensity is obtained. On this basis, the equation of Brillouin scattering radar echo signal is established. Combining the expression of signal energy and Brillouin scattering frequency shift, the analysis results of radar frequency shift and the corresponding range of values are obtained. Compared with the traditional analysis method, it is found that the time consumed by the two methods to get similar analysis results is different. The improved method saves 44 seconds compared with the traditional method, so it has higher analysis efficiency.
Aiming at the inefficiency of the traditional frequency shift analysis method of laser Brillouin scattering radar, edge detection is used to improve the traditional analysis method. Firstly, the initial laser beam is obtained by edge detection technology, and the spectrum of frequency line broadening on oscilloscope is analyzed. The relationship between the initial information of laser and signal intensity is obtained. On this basis, the equation of Brillouin scattering radar echo signal is established. Combining the expression of signal energy and Brillouin scattering frequency shift, the analysis results of radar frequency shift and the corresponding range of values are obtained. Compared with the traditional analysis method, it is found that the time consumed by the two methods to get similar analysis results is different. The improved method saves 44 seconds compared with the traditional method, so it has higher analysis efficiency.
引文
[1]贾青松,王天枢,王振,等.基于多波长布里渊光纤激光器的温度传感特性[J].应用光学,2018,39(4):22-26.
[2]徐荣辉,周正华,张旭苹.四倍频移间隔的多波长布里渊/铒光纤激光器[J].南昌工程学院学报,2018,34(3):80-84.
[3]李桂波,王枚.利用边缘技术探测进行船载激光布里渊散射雷达频移分析[J].舰船科学技术,2017,39(5A):140-142.
[2]徐荣辉,周正华,张旭苹.四倍频移间隔的多波长布里渊/铒光纤激光器[J].南昌工程学院学报,2018,34(3):80-84.
[3]李桂波,王枚.利用边缘技术探测进行船载激光布里渊散射雷达频移分析[J].舰船科学技术,2017,39(5A):140-142.