在单目视觉测量中，由于模型自身的限制，沿摄像机光轴方向上的位移测量精度一般远低于垂直光轴方向上的位移测量精度。首先，从数学模型上分析了单目视觉位姿测量在沿光轴方向上位移测量精度低的原因；然后，为了提高沿摄像机光轴方向上的位移测量精度，通过在沿摄像机光轴方向上加装一个高精度的激光测距传感器，设计了一种单目摄像机激光测距传感器位姿测量系统，从而利用激光测距传感器的高精度测距数据提高系统在沿摄像机光轴方向上的位移测量精度；最后，分别对单目摄像机激光测距传感器系统的测量原理、参数标定以及测量过程中的数据融合等方面进行了理论推导与实验研究，实验数据表明了系统方案的可行性和有效性。

Precision of translation measurements along the camera′s optical axis is generally much lower than that of which is perpendicular to the optical axis in monocular vision measurement due to the inherent limitation of the system. First of all, mathematical model is analyzed to explain the cause, then a high-precision laser rangefinding sensor (DLS) is installed near the camera to construct the Monoocular Camera-DLS pose measurement system, which will improve the precision of translation measurements along the optical axis with DLS measurements; Finally, principle of the system′s calibration and data fusion method are conducted. Experimental results show the feasibility and validity of the position-pose measurement system.