A laser radar crosstalk measurement method
A technology of lidar and measurement method, applied in radio wave measurement systems, instruments, etc., can solve problems affecting lidar performance, difficulties, etc., and achieve the effect of convenient and fast crosstalk testing
Active Publication Date: 2022-04-12
TANWAY TECH (BEIJING) CO LTD
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Problems solved by technology
[0003] In the field of lidar, the number of photosensitive devices used in different lines of laser radar products is different, and the interval between each photosensitive device is also very small. When multiple photosensitive devices work at the same time during use, there will be mutual crosstalk, and The existence of crosstalk can seriously affect the performance of lidar
The size of each unit of the detector used in the field of lidar is on the micron scale. To measure the crosstalk parameter, it is necessary to obtain a micron-scale light spot, which is very difficult.
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[0037] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.
[0038] In the following description, a lot of specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only a part of the embodiments of the present disclosure, and Not all examples.
[0039] figure 1 A schematic structural diagram of a laser radar crosstalk measurement system provided by an embodiment of the present disclosure. Such as figure 1 As shown, the laser radar crosstalk measurement system includes a laser transmitter 1, a calibration object 2, a lens 3, a ba...
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The disclosure relates to a laser radar crosstalk measurement method. The laser radar crosstalk measurement system includes a laser transmitter, a calibration object, a lens, a background structure, and a laser detector. The calibration object is located between the lens and the background structure and is located in the center of the lens. On the axis, the lens is located between the laser detector and the calibration object; the calibration object and the background structure are used to reflect the laser light emitted by the laser emitter to the lens, and irradiate the laser detector through the lens; the laser detector includes a A plurality of detection units arranged in a direction, the laser light reflected by the calibration object is only irradiated to the set detection unit; wherein, the set detection unit is the detection unit closest to the central optical axis. Through the technical solution of the present disclosure, the problem of difficult acquisition of micron-scale light spots is avoided, and the crosstalk measurement method of the laser radar is simplified.
Description
technical field [0001] The present disclosure relates to the field of laser radar, in particular to a method for measuring crosstalk of laser radar. Background technique [0002] Three-dimensional environment measurement and perception has important civilian and military application value. In the ADAS (Advanced Driving Assistance System, Advanced Driver Assistance System) assisted driving and automatic driving system, the spatial distance measurement and three-dimensional environment reconstruction of the surrounding environment of the vehicle are the prerequisites for realizing high-precision automatic driving control. Millimeter-wave radar and camera 3D visual reconstruction are relatively common distance measurement technologies, but in the application scenario of autonomous driving, the lateral resolution of millimeter-wave radar is difficult to meet the requirements, and it is easily interfered by metal objects; the distance measurement accuracy of camera 3D visual reco...
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IPC IPC(8): G01S7/497
CPCG01S7/497
Inventor 时菲菲王世玮郑睿童沈罗丰
Owner TANWAY TECH (BEIJING) CO LTD