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

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...

AI Technical Summary

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

Images