| 利用声表面波器件对CO_2相干激光雷达进行信号处理 |
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| 引用本文： | 戴永江,郭建恒,孙东松.利用声表面波器件对CO_2相干激光雷达进行信号处理[J].红外与激光工程,1996(4). |
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| 作者姓名： | 戴永江 郭建恒 孙东松 |
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| 作者单位： | 哈尔滨工业大学应用物理系 |
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| 摘 要： | 利用声表面波（ＳＡＷ）器件设计了一个多通道窄带滤波器组对ＣＯ２相干激光雷达的信号进行有效处理。研制了一个ＣＯ２相干激光雷达光学头系统的信号模拟－数字处理系统，对３５～５５ＭＨｚ的外差信号进行计算机ＦＦＴ预处理，得到了较好的效果。
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| 关 键 词： | 声表面波器件，激光雷达，相干雷达，快速傅里叶变换，信号处理 |
SURFACE ACOUSTIC WAVE DEVICE FOR SIGNAL PROCESSING IN COHERENT CO_2 LASER RADAR |
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| Dai Yongjiang,Guo Jianheng,Sun Dongsong.SURFACE ACOUSTIC WAVE DEVICE FOR SIGNAL PROCESSING IN COHERENT CO_2 LASER RADAR[J].Infrared and Laser Engineering,1996(4). |
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| Authors: | Dai Yongjiang Guo Jianheng Sun Dongsong |
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| Abstract: | A multichannel narrow band-pass filter-group with the surface acoustic wave (SAW) device used is descried in this paper for signal pre-processing in coherent CO2 laser radar. An analog-digital signal processing unit is developed in design of the optical system of a coherent CO2 laser radar. Satisfied result has been abtained when the signal processing unit is used for FFT process of 35 -55MHz coherent signal in use of a computer. |
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| Keywords: | Suface acoustic wave device Laser radar Coherent radar Fast fourier transformation Signal processing |
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