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Multipath laser radar detection method

A detection method and multi-channel laser technology are applied in the field of multi-channel lidar detection, which can solve the problems of low detection accuracy of radar and achieve the effect of improving accuracy.

Active Publication Date: 2017-08-29
SHENYANG AEROSPACE UNIVERSITY
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Problems solved by technology

[0005] An embodiment of the present invention provides a multi-channel laser radar detection method to solve the problem of low radar detection accuracy in the prior art

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] A multi-channel laser radar detection method provided by an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0031] S1. Open up N+1 storage spaces in the random access memory, and each storage space is represented by an array of M bytes; wherein, the N arrays are in one-to-one correspondence with N channels.

[0032] S2. Continuously send N laser pulses to N channels, and complete a detection by N laser pulses in t...

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Abstract

The present invention discloses a multipath laser radar detection method, and relates to the automobile electronic application field. The multipath laser radar detection method mainly comprises: calling all the range-finding time in each channel array, calculating average values of all the range-finding time, and obtaining first average values; performing averaging of the N first average values, and obtaining second average values, namely [Mu]; determining a confidence interval [[Sigma]1[Mu], [Sigma]2[Mu]] according to the [Mu], a preset confidence lower limit [Sigma]1 and a preset confidence upper limit [Sigma]2; and determining whether the range-finding time of each laser pulse in continuously sent N laser pulses is located in the confidence interval [[Sigma]1[Mu], [Sigma]2[Mu]] or not according to the confidence interval [[Sigma]1[Mu], [Sigma]2[Mu]], calculating the average values of all the range-finding time which is located in the confidence interval [[Sigma]1[Mu], obtaining third average values, and storing the third average values into the (N+1) array with M bytes. The multipath laser radar detection method performs averaging and calculates the confidence interval, the confidence interval is employed to eject large data and perform averaging of all the range-finding time located in the confidence interval once again to improve the accuracy of the radar measurement.

Description

technical field [0001] The invention relates to the technical field of automotive electronics applications, and in particular to a multi-channel laser radar detection method. Background technique [0002] Due to the development of the automobile industry, the number of automobiles has increased significantly, and automobile technology has also been fully developed. In particular, research on lidar-based active collision avoidance systems has emerged due to the development of electronic technology. Among them, lidar, as the distance detection sensor of the active collision avoidance system, greatly increases the application range of the active collision avoidance system with lower cost and higher ranging accuracy. [0003] In lidar, three-way laser scanning radar has been widely used. The three-way laser scanning radar measures the distance and orientation of obstacles by cyclically scanning its three channels. In the traditional three-way laser scanning radar, the distanc...

Claims

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Application Information

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IPC IPC(8): G01S7/48
CPCG01S7/4802
Inventor 张丽丽屈乐乐白玉
Owner SHENYANG AEROSPACE UNIVERSITY
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