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Hyperspectral all-solid-state laser radar device

A lidar, all-solid-state technology, used in measurement devices, instruments, and re-radiation, etc., can solve the problems of inaccessibility, small field of view, and limited deflection angle of scanning galvanometers, avoiding motion compensation and improving imaging rates. Effect

Inactive Publication Date: 2022-07-19
CHINA JILIANG UNIV
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Problems solved by technology

[0004] These devices can either obtain the global three-dimensional information by one imaging, but cannot obtain the spectral information of the target, or change the scanning area through the scanning galvanometer, and obtain the three-dimensional information and spectral information of the target point by point through point scanning, and because the deflection angle of the scanning galvanometer Limited, resulting in a small field of view, unable to perform large-scale scanning imaging, and the volume is large, and the scanning speed is relatively slow, which is not conducive to rapid imaging of dynamic objects

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  • Hyperspectral all-solid-state laser radar device
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Embodiment Construction

[0021] like figure 1 , a hyperspectral all-solid-state laser radar device, comprising: a transmitting module, a receiving module and a data processing module; the transmitting module emits laser light, which is reflected by the detection object and then enters the receiving module, and the receiving module transmits data to the data processing module for processing. Processing and imaging; the transmitting module includes a laser 1, an adapter 2, and a beam expander 3, and the laser 1 adopts a supercontinuum high-repetition laser, including a synchronization end and an output end, and the output end of the output end is an FC connector , the wavelength range is 320nm-2400nm, and the pulse width is about 100ps. The adapter 2 includes an access end and an output end. The access end is an FC interface, and the connection end is a threaded interface, using a standard M22x0.75 thread. The beam expander 3 includes a light entrance hole and a light exit hole, the exit end of the lase...

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Abstract

A hyperspectral all-solid-state laser radar device comprises a transmitting module, a receiving module and a data processing module. The transmitting module comprises a laser, an adapter and a beam expander, the receiving module comprises a telescope system, a beam splitting system, a CCD array spectrometer and a single-photon detector array module, the data processing module comprises a TDC time measurement array module and a computer, the transmitting module emits laser, the laser is reflected by a detection object and then enters the receiving module, and the TDC time measurement array module is connected with the computer. According to the system and the method, global three-dimensional information and spectral information can be obtained at one time, motion compensation is avoided, and the imaging quality and the imaging rate are improved.

Description

technical field [0001] The invention relates to a hyperspectral all-solid-state laser radar device, which belongs to the field of laser radar. Background technique [0002] Imaging lidar is a comprehensive new technology product of laser technology, radar technology, optical scanning and control technology, high-sensitivity detection technology and high-speed computer processing technology. At present, the application of lidar is very extensive, from the ground to the air, from the air to the space, from the land to the sea, from the sea to the underwater, and involves many disciplines. It has the incomparable advantages of conventional radar, and has broad application prospects in both military and civilian applications. [0003] In recent years, 3D imaging lidar has gradually developed from single-point scanning to small area scanning, linear push-broom and area flash imaging, and the imaging speed is getting faster and faster; at the same time, the single-photon detectio...

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Application Information

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IPC IPC(8): G01S17/89G01S7/481
CPCG01S17/89G01S7/4814G01S7/4816
Inventor 徐睿叶海东赵天琦石岩吕航黄杰陈亮金尚忠
Owner CHINA JILIANG UNIV