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Terrain adaptive pulse power in a scanning lidar

A technology of light pulse and pulse energy, applied in the field of systems, which can solve problems such as operating parameter limitations

Pending Publication Date: 2020-08-21
WAYMO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, laser emission itself is limited by laser safety considerations that limit the achievable laser emission and by the operating parameters of the laser source that limit its average optical pulse power

Method used

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  • Terrain adaptive pulse power in a scanning lidar
  • Terrain adaptive pulse power in a scanning lidar
  • Terrain adaptive pulse power in a scanning lidar

Examples

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Embodiment Construction

[0020] Example methods, devices, and systems are described herein. It should be understood that the words "exemplary" and "exemplary" are used herein to mean "serving as an example, instance, or illustration." Any embodiment or feature described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or features. Other embodiments may be utilized and other changes may be made without departing from the scope of the subject matter presented herein.

[0021] Therefore, the example embodiments described herein are not meant to be limiting. As generally described herein and illustrated in the drawings, the aspects of the present disclosure can be arranged, substituted, combined, separated and designed in various different configurations, all of which are contemplated herein.

[0022] Furthermore, features shown in each figure may be used in combination with each other unless the context implies otherwise. Accordi...

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Abstract

The present disclosure relates to systems and methods involving Light Detection and Ranging (LIDAR or lidar) systems. Namely, an example method includes causing a light source of a LIDAR system to emit light along an emission vector. The method also includes adjusting the emission vector of the emitted light and determining an elevation angle component of the emission vector. The method further includes dynamically adjusting a per pulse energy of the emitted light based on the determined elevation angle component. An example system includes a vehicle and a light source coupled to the vehicle.The light source is configured to emit light along an emission vector toward an environment of the vehicle. The system also includes a controller operable to determine an elevation angle component ofthe emission vector and dynamically adjust a per pulse energy of the emitted light based on the determined elevation angle component.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Patent Application Serial No. 16 / 145,647, filed September 28, 2018, the contents of which are hereby incorporated by reference. Background technique [0003] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. [0004] Light Detection and Ranging (LIDAR or LIDAR) systems emit light into the environment in order to determine information about objects based on the emitted light reflected from those objects. The range and sensitivity of LIDAR is fundamentally limited by the amount of energy emitted into the environment. That is, increasing the amount of energy per light pulse or continuous light signal generally enables unambiguous detection of objects over longer distances. However, laser emission itself is limited by laser safety conside...

Claims

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Application Information

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IPC IPC(8): G01S7/484G01S7/481G01S17/931
CPCG01S17/931G01S7/484G01S7/4868G01S17/42G01S7/497G01S7/4814G01S7/4815G01S7/4816G01S17/10G01S7/4817
Inventor M.A.尚德
Owner WAYMO LLC