【摘要】 针对传统脉冲激光测距直接计数法精度低的问题,本文介绍用时幅转换插入法来提高脉冲激光测距时间测量分辨率和测距精度的原理和技术途径。提出了时幅转换电路设计中的几个关键问题。在脉冲激光测距实验平台中对设计的时幅转换电路进行了性能测试实验。结果表明,时幅转换插入法将时间测量分辨率由10ns提高到20ps,测距精度由1.5m提高到5cm。最后分析了影响脉冲激光测距精度的误差因素。更多还原

【Abstract】 The traditional pulsed laser ranging with direct counting time measurement has low precision. In order to improve time resolution and precision of pulsed laser ranging, the interpolation method of Time-to-amplitude Conversion (TAC) is introduced. Several key points of TAC circuit design are provided here. On the pulsed laser ranging experiment platform, the performances of the designed TAC circuits are tested. The experiment results show that TAC interpolation method improves time resolution of pulsed laser ranging from 10 ns to 20 ps and ranging precision from 1.5 m to 5 cm. At last, the error factors influencing the precision of pulsed laser ranging are analyzed.更多还原