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Comprehensive low-noise constant-temperature laser receiving system

A laser receiving and low-noise technology, applied in the field of comprehensive low-noise constant temperature laser receiving system, can solve the problems of large volume of constant temperature bath, unfavorable system miniaturization and integrated design, etc. Repeatability, the effect of improving reception efficiency

Active Publication Date: 2007-03-28
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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Problems solved by technology

However, because the filter is greatly affected by temperature, the filter is often placed in a constant temperature tank. The constant temperature tank in industry is generally relatively large, which is not conducive to the miniaturization and integrated design of the system.

Method used

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  • Comprehensive low-noise constant-temperature laser receiving system

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0045] 1. Temperature regulation system 6

[0046] As shown in Figure 3, the temperature regulation system 6 is composed of a temperature sensor 6.1, a single chip microcomputer 6.2, a digital-to-analog converter 6.3, and a semiconductor cooling chip 6.4 connected in sequence; the temperature sensor 6.1 and the semiconductor cooling chip 6.4 are placed near the filter 2.

[0047] Its working principle is: the single-chip microcomputer 6.2 obtains the temperature state from the temperature sensor 6.1, the digital-to-analog converter 6.3 converts the temperature output by the single-chip microcomputer 6.2 into an analog quantity, and the digital-to-analog converter 6.3 controls the refrigeration of the semiconductor refrigeration chip 6.4;

[0048] The temperature sensor 6.1 is implemented by Maxim's DS18B20 chip, and its temperature measurement accuracy reaches 0.0625°C:

[0049] MCU 6.2...

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Abstract

The invention discloses a laser receiver system of low yawp and constant temperature. The collimating lens (1), the light filter (2), the angle reflector (3), the photoelectric receiver (5) are set in the cylinder (0) from the right to the left. The CCD (4), the temperature adjustment system (6) and the transmission gear (7) are set on the top of the cylinder; the transmission gear (7) includes the first transmission gear (7A) and the second transmission gear (7B); the light filter (2) is connected to the first transmission gear and the reflector (3) is connected to the second transmission gear (7B); the position of the CCD is correspond to the angle reflector (3). The invention has the function of constant temperature, light filter and light tine adjustment. So it can be used for the lidar, the satellite laser ranging, the spacecraft tracking, the stellar tracking observation and the space fragment dynamic tracking.

Description

technical field [0001] The invention relates to a laser receiving system, in particular to a comprehensive low-noise constant-temperature laser receiving system. Background technique [0002] Lidar is the product of the combination of traditional radar technology and modern laser technology. It has a series of unique advantages: extremely high angular resolution, extremely high distance resolution, high speed resolution, wide range of speed measurement, and can obtain multiple targets. image, strong anti-interference ability, and smaller volume and weight than microwave radar. However, the technology of lidar is very difficult, and it is greatly affected by the weather environment, especially when it is used during the day, it is affected by the noise of sunlight, which limits its application to a certain extent. [0003] Optical interference filter is a precision optical filter device based on the principle of optical thin film interference. By designing and changing the ...

Claims

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Application Information

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IPC IPC(8): G01S7/48G01S7/481G01S7/486G01S17/00G02B27/00
Inventor 郭唐永王培源李欣邹佟谭业春
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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