Adaptive adjustment method for dlp signal receiving system suitable for lidar

Abstract

The invention discloses a DLP signal receiving system suitable for laser radar and an adaptive adjustment method thereof. A laser transmitter emits a laser signal through a laser scanning mirror to form a laser scanning area, and a DLP signal receiver controls the laser scanning area. Scanning points for signal acquisition, the DLP signal receiver includes a plurality of DLP micromirrors arranged in an array, and the laser reflection signal of each scanning point is tracked by more than one corresponding DLP micromirror in the array of DLP micromirrors and receiving; the laser transmitter is integrated with the DLP signal receiver, or the laser transmitter is adjacent to the DLP signal receiver; the DLP micromirrors arranged in an array are used to track and receive the laser radar synchronously The laser reflection signal in the scanning area controls the deflection of the DLP micromirror array to synchronize with the lidar scanning, and selectively projects the area imaged by the scanning target reflection signal to the photoelectric sensor, thereby improving the signal of receiving the laser reflection signal in the scanning area of ​​the lidar Noise ratio, while achieving better anti-interference characteristics.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a DLP signal receiving system suitable for laser radar and a corresponding adaptive adjustment method. Background technique [0002] LiDAR (Light Laser Detection and Ranging), short for laser detection and ranging system, is a radar that uses lasers as a radiation source. Lidar is the product of the combination of laser technology and radar technology, including at least a transmitter and a receiver. Transmitters are various forms of lasers, such as carbon dioxide lasers, neodymium-doped yttrium aluminum garnet lasers, semiconductor lasers and wavelength-tunable solid-state lasers, etc.; receivers use various forms of photodetectors, such as photomultiplier tubes, semiconductor photoelectric Diodes, avalanche photodiodes, infrared and visible light multiplex detection devices, etc. [0003] Among them, solid-state lidar has scanning characteristics such as large scanning co...

AI Technical Summary

Problems solved by technology

When the scanning coverage of the laser radar is large, the traditional coaxial receiver is mainly suitable for the rangefinder, and due to its own limitations, it may not be able to fully and effectively receive the laser signal of the scanning coverage

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