【摘要】 非扫描成像激光雷达是激光雷达重要发展方向之一。介绍了增益调制型非扫描激光雷达系统的成像原理。根据该激光雷达的成像原理可以得出,脉冲宽度和背景光积累将会对激光雷达的测距精度产生较大影响。分析了脉冲宽度、回波展宽以及背景光会对距离精度产生的影响。在考虑脉冲宽度和背景光积累,忽略其他噪声和目标表面粗糙度的情况下,对大气传输和目标对回波脉冲展宽的影响进行了分析,对增益调制型非扫描激光雷达在不同的系统及目标参数情况下的回波波形和测距精度进行了仿真计算,为系统性能参数的选择和距离图像的后续处理提供了理论依据。更多还原

【Abstract】 The scannerless imaging lidar is one of the most important development direction of lidar.The imaging principle of gain-modulated scannerless lidar was introduced.According to the imaging principle of gain-modulated scannerless lidar,the pulse width and accumulation of background light have strong influence on the range accuracy.The laser pulse width,return pulse spread and accumulation of background light,which affected range accuracy,were analyzed.Considering the laser pulse width and accumulation of background light,and ignoring the other noise and roughness of target surface,the effects of atmosphere transmission and target on the return pulse spread were analyzed,and the echo waveform and range accuracy of gain-modulated scannerless lidar were simulated and calculated under different system and target parameters.The results provide theoretical foundation for the system performance parameters selection and range image processing of gain-modulated scannerless lidar.更多还原