Bayer Mustafa Mert, Torun Rasul, Li Xun, Velazco Jose E, Boyraz Ozdal
Opt Express. 2020 Jun 8;28(12):17241-17252. doi: 10.1364/OE.392647.
In this paper, we demonstrate analytical modeling and experimental verification of simultaneous ranging and velocimetry measurements in multi-tone continuous wave lidars. To assess the ranging performance of the proposed lidar, a comparative experiment of the multi-tone continuous wave and time-of-flight techniques is performed. The average deviation in ranging is ∼0.75cm with >90% fitting accuracy, which corresponds to the uncertainty of the time-of-flight measurements due to the detector bandwidth. Simultaneous ranging and velocimetry are performed on a moving target. The velocimetry accuracy of the multi-tone continuous wave lidar is dictated by the frequency resolution of the Doppler shift, which is measured as ± 0.8cm/s. The results indicate that multi-tone continuous wave lidars can be improved to perform remote sensing for oceanography and atmospheric sciences and for autonomous vehicles without using any amplitude, frequency or phase sweeping.
在本文中，我们展示了多音连续波激光雷达中同时进行测距和测速测量的分析模型和实验验证。为了评估所提出的激光雷达的测距性能，进行了多音连续波和飞行时间技术的对比实验。测距的平均偏差约为0.75厘米，拟合精度大于90%，这对应于由于探测器带宽导致的飞行时间测量的不确定性。在移动目标上同时进行测距和测速。多音连续波激光雷达的测速精度由多普勒频移的频率分辨率决定，测量结果为±0.8厘米/秒。结果表明，多音连续波激光雷达可以在不使用任何幅度、频率或相位扫描的情况下得到改进，以用于海洋学和大气科学的遥感以及自动驾驶车辆。
