Three-dimensional imaging laser radar system

A technology of laser radar and three-dimensional imaging, which is applied in radio wave measurement system, electromagnetic wave re-radiation, utilization of re-radiation, etc., can solve the problem of low horizontal resolution of ICCD gain modulation, achieve high dynamic target detection and imaging, and improve resolution rate effect

Inactive Publication Date: 2016-07-20
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to better overcome the problem of low lateral resolution of ICCD gain modulation, the present invention proposes a three-dimensional imaging lidar based on high-speed electro-optical modulation

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0014] In order to make the purpose, high-speed electro-optic modulation technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0015] like figure 1 As shown, the present invention proposes a three-dimensional imaging laser radar based on electro-optic crystal modulation. The laser radar system includes a main control circuit module 100, a laser lighting module 200, a laser emitting optical system 300, a laser receiving optical system 400, and a high-speed electro-optic modulation Module 500, EMCCD imaging module 600 and host computer 700.

[0016] Des...

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Abstract

The present invention discloses a three-dimensional imaging laser radar system based on high-speed electro-optic modulation technology. The system mainly comprises a main control circuit module, a laser lighting module, a laser emitting optical system, a laser receiving optical system, a high-speed electro-optic modulation module, an EMCCD imaging module, and a host computer. Under the control of the main control circuit module, the high-speed electro-optic modulation module modulates the echo signal detected by the laser receiving optical system, one path is modulated as an optical signal whose light intensity is monotonically increased with time, and the other path is modulated as an optical signal whose light intensity is monotonically decreased with time. The two modulated optical signals are collected by two paths of EMCCD cameras with photon detection ability at the same time and then are transmitted to the host computer. The host computer processes two images and reconstructs the three-dimensional image of a target scene. The system has the advantages of high imaging speed and high resolution and is especially suitable for the three-dimensional detection imaging of a high dynamic target.

Description

technical field [0001] The invention relates to laser radar, in particular to a three-dimensional imaging laser radar based on electro-optic modulation. Background technique [0002] Laser three-dimensional imaging radar technology can obtain azimuth, elevation, distance, and intensity information at the same time, and has the advantages of high resolution, strong anti-interference ability, and good concealment performance. It can be used for distance measurement, angle measurement, angle tracking, and target speed measurement. And target activity instructions, tracking ultra-low-altitude flying targets, etc. These characteristics of laser three-dimensional imaging radar make it widely used in military and civilian fields such as terrain surveying and mapping, enemy reconnaissance, and target tracking. Three-dimensional imaging lidar technology can be divided into two types: coherent imaging and incoherent imaging in terms of imaging system. The range resolution of coherent...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89G01S7/486G01S7/481
CPCG01S17/89G01S7/4816G01S7/4863
Inventor 刘博陈臻彭章贤周向东
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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