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Context aware real-time power adjustment for steerable lidar

A laser radar and power technology, applied in the direction of utilizing re-radiation, re-radiation of electromagnetic waves, instruments, etc., can solve problems such as difficulties in the laser radar system

Pending Publication Date: 2021-12-31
GM CRUISE HOLDINGS LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the power level of the laser source (e.g., a laser or an optical amplifier if a low-power laser is used) increases, the design has sufficient capability to handle the Optical Amplifiers) would make it more difficult (if possible) for LiDAR systems to

Method used

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  • Context aware real-time power adjustment for steerable lidar
  • Context aware real-time power adjustment for steerable lidar
  • Context aware real-time power adjustment for steerable lidar

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Embodiment Construction

[0025] Various techniques related to context-aware real-time power adjustment for steerable lidar are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It is evident, however, that such techniques may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects. Furthermore, it should be understood that functions described as being performed by certain system components may be performed by multiple components. Similarly, for example, a component may be configured to perform a function described as being performed by a plurality of components.

[0026] Furthermore, the term "or" is intended to mean an inclusive "or"...

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Abstract

Various technologies described herein pertain to context aware real-time power adjusting for steerable lidar. A lidar system includes a laser source (e.g., FMCW) configured to emit an optical signal. The lidar system further includes a scanner configured to direct the optical signal emitted by the laser source from the lidar system into an environment. The optical signal can be directed over a field of view in the environment during time periods of frames. The lidar system can further include a controller configured to modulate a power of the optical signal emitted by the laser source between the frames and / or within one or more of the frames. The controller can modulate the power of the optical signal emitted by the laser source based on a position of the lidar system in the environment and a direction in which the optical signal is to be transmitted into the environment.

Description

Background technique [0001] Light detection and ranging (lidar) systems are surveying systems that measure the distance to objects in the environment by illuminating the target with laser light and measuring the reflected light (lidar return). The difference in laser return time can be exploited to generate a three-dimensional (3D) representation of the target. LiDAR systems can also be used to measure the velocity of objects relative to the observer. As a result, lidar systems can be used in a variety of ground, air, and mobile applications; for example, lidar systems can be used in autonomous or semi-autonomous vehicles, drones, robots, and other applications that utilize laser scanning capabilities. [0002] One type of lidar system is a direct time-of-flight (TOF) lidar system. Direct TOF lidar systems emit an optical signal comprising short pulses of light such that the light pulses can be reflected from targets in the environment (assuming the targets are located in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/58G01S17/86G01S17/32G01S17/36G01S17/931G01S7/4865G01S7/481G01S7/4911
CPCG01S17/58G01S17/32G01S17/36G01S17/86G01S17/931G01S7/4865G01S7/4817G01S7/4911
Inventor 凯尔·沃格特卢福拉·马莱基
Owner GM CRUISE HOLDINGS LLC
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