Double-pulse blind area signal processing method and device, radar and storage medium

A signal processing and double-pulse technology, applied in the computer field, to remove the problem of short-range blind spots and improve the performance of short-range detection and ranging accuracy

Pending Publication Date: 2021-03-05
SUTENG INNOVATION TECH CO LTD
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Problems solved by technology

[0003] In view of this, the embodiment of the present application provides a double-pulse blind zone signal processing method, device, radar and storage medium to solve the short-range blind zone problem of the double-pulse mode laser radar in the prior art, and improve the short-range range of the double-pulse mode laser radar. Detection performance

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  • Double-pulse blind area signal processing method and device, radar and storage medium
  • Double-pulse blind area signal processing method and device, radar and storage medium
  • Double-pulse blind area signal processing method and device, radar and storage medium

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[0042] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail. It should be noted that the current common double-pulse mode laser radar transmitter transmits two detection pulses according to the preset time interval in a detection cycle. After the two detection pulses propagate through space, the echoes received by the radar Signals usually include interference signals, such as signals generated by real targets reflecting detection pulses emitted...

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Abstract

The invention belongs to the technical field of computers and provides a double-pulse blind area signal processing method applied to a laser radar. The method comprises the following steps of: capturing an echo signal corresponding to two detection pulses; forward delaying the echo signal for a time length corresponding to an transmitting time interval to obtain a first echo signal; adding N zerosto the tail of the echo signal to obtain a second echo signal; obtaining a first mixed echo signal based on the first echo signal and the second echo signal; deleting the first N signals of the firstmixed echo signal to obtain a second mixed echo signal; and performing signal splicing on the first N points of the second echo signal and the second mixed echo signal to obtain a target echo signal.N is the number of sampling points corresponding to the transmitting time interval. The method can effectively solve a problem of a short-distance blind area caused by the time delay between the twodetection pulses, and improves the radar short-distance detection performance and range finding precision in a double-pulse mode.

Description

technical field [0001] The present application belongs to the field of computer technology, and in particular relates to a signal processing method, device, radar and storage medium for a double-pulse blind area applied to laser radar. Background technique [0002] Lidar is commonly used in the field of autonomous driving due to its advantages of less restrictive use environment and lower cost than millimeter-wave radar. Compared with single-pulse lidar, dual-pulse lidar has the advantage of longer detection distance, so it is often used in the field of automatic driving. However, the dual-pulse mode lidar has the problem of close-range blind spots, which will greatly reduce the near-field detection capability of the lidar, making it impossible for vehicles to accurately identify close-range targets, posing a great safety hazard. Contents of the invention [0003] In view of this, the embodiment of the present application provides a double-pulse blind zone signal processi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/487G01S17/88
CPCG01S7/487G01S17/88
Inventor 刘夏史照辉罗斯特
Owner SUTENG INNOVATION TECH CO LTD
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