高精度激光动态测试技术研究

在星载激光测距仪的研制过程中，如何通过地面检测方法对 测距仪的各项性能指标进行测试，是一项重要的工作内容。根据脉冲式激光测 距仪的工作原理，设计了一套基于光电延时法的高精度动态测试系统，并对影响系 统精度的系统误差进行了分析，最终实现了对激光测距仪测距精度的测量。与传 统的测试方法相比，该方法具有模拟距离动态范围大、精度高等特点。实验结果表明，这种测试系 统的模拟距离范围可达15 m～30 km，模拟精度优于0.15 m。由于操作简易且实用性强，该系统可以满足 目前各种激光测距仪的测试需求。

Research on High Precision Laser Dynamic Testing Technology

In the development process of a spaceborne laser range finder, how to test the performance indexes of the range finder on the ground is critical. According to the operation principle of a pulse laser range finder, a high precision dynamic testing system based on the photoelectric time delay method is designed. The system error which may affects system precision is analyzed. Finally, the measurement of the ranging accuracy of the laser range finder is realized. Compared with the traditional testing method, this method has the features of large dynamic range and high precision. The experimental results show that the testing system has its simulation range of 15 m to 30 km and its simulation accuracy better than 0.15 m. Because of easy operation and strong practicability, the system can meet the testing needs of all kinds of current laser range finders.