Miniaturized area array Gm-APD laser radar device with single photon detection sensitivity
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A single-photon detection and laser radar technology, applied in the laser field, can solve the problems of poor imaging distance and weather adaptability, and cannot meet the needs of high-speed motion platforms, so as to improve weather adaptability, high-precision timing capabilities, and increase system The effect of working distance
Inactive Publication Date: 2020-05-15
HARBIN INST OF TECH
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[0004] In order to solve the technical problems of poor imaging distance and weather adaptability of the existing unmanned laser radar and the inability to meet the use requirements of high-speed motion platforms, the present invention proposes a miniaturized single-photon detection sensitivity area array Gm-APD laser The radar device adopts the following technical solutions:
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[0027] An area array Gm-APD lidar device with miniaturized single-photon detection sensitivity, such as figure 1 and figure 2 As shown, the device includes a ball pod, a two-axis servo frame 1, a gyroscope 2, a motor 3, a grating code disc 4, a control processor 5, an information processor 6, a short-wave infrared laser 7, and a Gm-APD detector 8 , receiving optical system 9, fiber optic coupler 10, transmitting optical system 11, secondary power supply 12 and host computer 13; the two-axis servo frame 1, gyroscope 2, motor 3, grating code disc 4, control processor 5, information A processor 6, a short-wave infrared laser 7, a Gm-APD detector 8, a receiving optical system 9, a fiber coupler 10, a transmitting optical system 11, and a secondary power supply 12 are arranged inside the ball pod;
[0028] The two-axis servo frame 1 is provided with a gyro 2, a motor 3 and a grating code disc 4; the signal output end of the gyro 2 is connected with the signal input end of the con...
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Abstract
The invention provides a miniaturized area array Gm-APD laser radar device with single photon detection sensitivity, and belongs to the technical field of laser. The laser radar device comprises a ball nacelle, a two-axis servo frame, a gyroscope, a motor, a grating coded disc, a control processor, an information processor, a short-wave infrared laser, a Gm-APD detector, a receiving optical system, an optical fiber coupler, a transmitting optical system, a secondary power supply and an upper computer. The two-axis servo frame, the gyroscope, the motor, the grating coded disc, the control processor, the information processor, the short-wave infrared laser, the Gm-APD detector, the receiving optical system, the optical fiber coupler, the transmitting optical system and the secondary power supply are arranged in the spherical pod. The laser radar device has the performances of high-precision tracking and pointing, image stabilization and the like.
Description
technical field [0001] The invention relates to a miniaturized area array Gm-APD laser radar device with single-photon detection sensitivity, which belongs to the field of laser technology. Background technique [0002] Unmanned driving is an extremely hot technical field in recent years. The main solutions for vehicle-mounted unmanned driving are lidar, microwave radar, and visible light cameras, among which lidar is the mainstream solution. In the lidar solution, the linear APD mechanical rotary scanning solution developed by Google was initially developed, and the solution continued to develop from 1×16 pixels, 1×32 pixels, 1×64 pixels, and 1×128 pixels , as the market demand continues to grow, the cost continues to decrease, but this solution can only rotate and scan imaging at 360°, so the frame rate is low, usually around 5-10Hz, and the data refresh rate is not enough to support high-speed driving obstacle avoidance requirements. In order to pursue miniaturization an...
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