Polarization sensitive lidar system

• Main Authors: KAMMERMANN GARY W, NEGOITA VIOREL C, TROWBRIDGE CHRISTOPHER JOHN
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

A lidar (LiDAR) system includes an emission light emitter, the intensity of the emitted light beams being substantially the same. The light emitter forms a light beam polarization pattern by emitting light beams of different polarizations. The lidar system also includes a receiver to receive reflected light from an object. An analyzer identifies a characteristic difference between a beam polarization pattern of a beam emitted to an object and an intensity pattern of object reflected light, and determines a reflection position associated with the object reflected light. And then judging whether the reflection position is an object position or a ghost position by using the identified characteristic difference. 激光雷达(LiDAR)系统包括发射光发射器，所发射光束的强度大致相同。光发射器通过发射偏振不同的光束形成光束偏振图样。所述激光雷达系统还包括一个接收器，以接收物体反射光。分析器识别发射至物体光束的光束偏振图样与物体反射光的强度图样之间的特征差异，以及确定与所述物体反射光相关的反射位置。然后运用所识别的特征差异判断所述反射位置是物体位置还是虚影位置。