激光测高仪是测量激光脉冲的飞行时间来获得测高仪与探测目标之间的距离,因此激光飞行时间测量的准确性是衡量其系统能力的根本指标.采用了一种专用的时间数字转换芯片设计了时间间隔测量模块,它采用延时线技术,测量频率快,时间分辨率高,受外界环境干扰小,完全适合激光测高的要求.在给出软硬件实现方法的同时,也给出了测量结果.
参考文献
| [1] | Kalisz J.Review of methods for time interval measurements with picosecond resolution[J].Institute of Physics Metrologia,2004,41:17-32. |
| [2] | ACAM corporation.TDC-GP1 Functional Description[Z].Germany:2001. |
| [3] | Nutt R.Digital time intervals meter[J].Rev.Sci.Instrum.,1968,39:1342-5. |
| [4] | Maatta K,Kostamovaara J.A high-precision time-to-digital converter for pulsed time-of-flight laser radar applications[J].IEEE Transactions on Instrumentation and Measurement,1998,47(2). |
| [5] | Kalisz J,Pelka R,Poniecki A.Precision time counter for laser ranging to satellites[J].Rev.Sci.Instrum.,1994,65(3):736-741. |
| [6] | Bi Yunfeng,et al.Analysis of laser altimeter echo energy attenuation in atmosphere transfer medium[J].Chinese Journal of Quantum Electronics (量子电子学报),2005,22(6):918-922 (in Chinese). |
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