Laser radar signal noise reduction device and method
A laser radar and signal technology, used in radio wave measurement systems, instruments, etc., can solve the problems of insufficient target information accuracy, echo signals carrying noise, and insufficient effect.
Pending Publication Date: 2020-01-14
BEIJING WANJI TECH
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Problems solved by technology
[0005] Embodiments of the present invention provide a laser radar signal noise reduction device and method, which are used to solve the problem that the echo signal received by the laser radar technology in the process of detecting the target carries noise, which leads to insufficient accuracy of the finally obtained target information and poor performance. Not good enough technical issues
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[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.
[0052] figure 1 A schematic structural diagram of a laser radar signal noise reduction device provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the laser radar signal noise reduction device includes: a detector 11 , an amplification circuit 12 and a negative feedback circuit 15 .
[0053] Wherein, the output ...
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An embodiment of the invention provides a laser radar signal noise reduction device and method. The noise reduction device comprises a detector, an amplifying circuit and a negative feedback circuit.The output end of the detector is electrically connected with the input end of the amplifying circuit; the output end of the amplifying circuit is electrically connected with the input end of the negative feedback circuit; and the output end of the negative feedback circuit is electrically connected with the output end of the detector. The detector is used for acquiring an echo signal of a laser radar; the amplifying circuit is used for amplifying the echo signal to obtain an amplified signal; and the feedback circuit is used for acquiring a noise signal in the amplified signal, processing thenoise signal to obtain a negative feedback signal, and loading the negative feedback signal into the echo signal. Due to the fact that the phase of the negative feedback signal is opposite to the phase of the noise signal, the noise reduction device can eliminate the noise signal carried by the echo signal, so that accuracy in obtaining detection target information is improved, and a better detection effect is achieved.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of laser radar, and in particular, to a laser radar signal noise reduction device and method. Background technique [0002] Lidar is a radar system that detects characteristic quantities such as speed and position of targets by emitting laser beams. With the rapid development of lidar technology, the application market and scale of lidar are also expanding day by day. [0003] When the existing lidar detects the target, it usually sends a detection signal to the target, and compares and processes the received signal (echo signal) reflected from the target with the transmitted signal to obtain relevant information about the detected target. For example: the position, speed, distance, attitude and other information of the target. [0004] However, in the process of laser radar detecting targets, due to environmental factors such as rain and fog reflections, shade changes in trees, etc.,...
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Login to View More IPC IPC(8): G01S7/4861G01S7/487
CPCG01S7/4876G01S7/4861
Inventor 孟令帅王泮义邓永强
Owner BEIJING WANJI TECH