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A Method for Realizing Longitudinal Super-resolution Imaging of Single-pixel LiDAR

A super-resolution, lidar technology, applied in the direction of re-radiation of electromagnetic waves, utilization of re-radiation, measurement devices, etc., can solve problems such as sampling rate limitation, and achieve the effect of wide application value

Active Publication Date: 2018-05-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for realizing longitudinal super-resolution imaging of single-pixel laser radar to overcome the limitation of sampling rate of existing single-pixel laser imaging radar system

Method used

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  • A Method for Realizing Longitudinal Super-resolution Imaging of Single-pixel LiDAR

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Embodiment Construction

[0019] Such as figure 1 As shown, a method for realizing longitudinal super-resolution imaging of single-pixel lidar, the device includes a pulsed laser 1, a uniform beam expander 2, an optical modulator 3, an optical receiving system 4, and a single-pixel detection and data acquisition unit 5 , delay pulse generation controller 6;

[0020] The pulsed laser 1 emits pulsed laser light, which has a larger cross-sectional distribution after being modulated by the uniform beam expander 2, and the light intensity distribution is uniform;

[0021] The beam after passing through the uniform beam expander 2 is irradiated onto the light modulator 3, the modulated beam has a random binary distribution, and then the modulated beam irradiates the target object;

[0022] The reflected light of the target object is focused by the optical receiving system 4 onto the photoelectric detection surface of the single-pixel detection and data acquisition unit 5 to obtain reflected echo signals;

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Abstract

The invention discloses a vertical super-resolution imaging method for single-pixel laser radar. An apparatus includes a pulse laser, a light beam uniform beam expander, a light modulator, an optical reception system, a single-pixel detection and data acquisition unit, and a time-delay pulse generation controller. The apparatus is simple and practical, and is simple in design. The system cost can be effectively controlled without changes or increases of system hardware. Vertical super-resolution image information of a target is obtained through a signal processing method, and vertical super-resolution imaging is conducted for a single-pixel laser imaging radar system. The method has great application prospects in the field of target detection, identification, tracking and the like.

Description

technical field [0001] The invention relates to the field of single-pixel laser imaging radar, in particular to a method for realizing longitudinal super-resolution imaging of single-pixel laser imaging radar. Background technique [0002] At present, in order to detect and obtain image information of target objects, people often use area array CCD detectors. In some bands, the quantum efficiency of the area array CCD detector is low, and the cost is expensive. While the area array CCD imaging system is developing, an imaging system based on a single-pixel detector without a scanning device has attracted people's attention, which is called a single-pixel imaging lidar in this paper. The system can overcome the shortcomings of CCD detectors, and has the advantages of cost and high imaging quality in certain imaging bands. When using this system for 3D imaging, regardless of the pulse width of the laser pulse, the longitudinal resolution of the target object image is limited...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/89
CPCG01S17/89
Inventor 时东锋黄见苑克娥曹开法胡顺星
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI