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Laser radar multichannel photon counting and simulated detection device and method

A technology of photon counting and laser radar, which is applied in measuring devices, photometry, optical radiation measurement, etc., can solve the problems of high time resolution, high linearity and dynamic range of analog acquisition channels, reduce processing pressure, facilitate upgrades and The effect of function improvement and photon counting rate increase

Active Publication Date: 2019-08-09
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies in the prior art, to propose a laser radar multi-channel photon counting and analog detection device and method, which solves the problem of laser echo detection of laser radar photon counting and analog acquisition, and has laser echo The advantages of wave multi-mode and multi-channel simultaneous measurement, photon counting channel counting rate, high time resolution, analog acquisition channel linearity, high dynamic range, and high integration
Also suitable for other weak light signal detection occasions

Method used

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  • Laser radar multichannel photon counting and simulated detection device and method

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Embodiment

[0084] Such as figure 1 As shown, this embodiment provides a laser radar multi-channel photon counting and analog detection device, including an analog signal conditioning acquisition module, a photon signal shaping module, a clock distribution module, a power management module, an external interface module, a low-speed FPGA module and High-speed FPGA modules.

[0085] The clock distribution module of this embodiment integrates three kinds of clock source frequencies, which are 1GHz, 60MHz and 33.333MHz respectively. The slow clock source 60MHz is connected to the low-speed FPGA module. After the system is powered on, the low-speed FPGA module uses this clock to control the board power supply Chip power-on sequence, and configure the internal registers of the clock distribution chip LMK010 through the SPI bus to make the clock chip work in the correct mode. 33.333MHz is the reference clock of the ARM processor inside the high-speed FPGA, which is connected to the dedicated pi...

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Abstract

The invention relates to a laser radar multichannel photon counting and simulated detection device and method, belongs to the technical field of high-speed real-time collecting and processing of laserradar signals, and aims at realizing photo counting detection and simulated detection of multi-channel echo signals of an atmosphere detection laser radar. The device comprises an analog signal conditioning and collecting module, a photon signal shaping module, a clock distribution module, a power supply management module, an external interface module, a low-speed FPGA module and a high-speed FPGA module. Via the device and method, echo signals of the atmosphere detection laser radar can be processed in real time, multi-channel laser echo photon counting detection and simulated detection canbe realized, and the method and device are characterized by high hardware integrated degree, stable performance and extensible functions.

Description

technical field [0001] The invention relates to a laser radar multi-channel photon counting and analog detection device and method, which belongs to the technical field of high-speed real-time acquisition and processing of laser radar signals, and is used to realize photon counting detection and analog detection of atmospheric detection laser radar multi-channel echo signals. Background technique [0002] Atmospheric aerosols and clouds play an important role in the process of global climate and environmental changes, and have an important impact on the radiation budget between the earth-atmosphere-ocean, and have attracted widespread attention from the scientific community and the international community in recent years. Traditional measurement methods are difficult to obtain high-resolution vertical distribution of atmospheric aerosol characteristics in real time. Atmospheric detection lidar is a powerful tool for detecting the vertical distribution of atmospheric aerosols ...

Claims

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Application Information

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IPC IPC(8): G01S17/95G01S7/486G01S7/487G01J1/44G01J11/00
CPCG01J1/44G01J11/00G01J2001/442G01S7/4861G01S7/487G01S17/95Y02A90/10
Inventor 潘超赵一鸣王丽东时志云胡涛涛
Owner BEIJING RES INST OF TELEMETRY
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