Integrated Mie–Brillouin Lidar for Ocean Carbon, Temperature, and Salinity
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Solution Overview
Problem
Existing lidar technology cannot simultaneously detect the carbon sequestration efficiency of the oceanic biological pump and the vertical profile distribution of ocean environmental dynamic parameters.
Innovation Solution
A lidar system combining Mie scattering, Brillouin scattering intensity, and Brillouin scattering spectra information to detect carbon sequestration efficiency and vertical profile distribution of ocean environmental dynamic parameters, utilizing a vertically polarized laser emitting subsystem, beam splitters, photodetectors, interferometers, and an ICCD acquisition subsystem.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing lidar technology is used, then the system structure is simple, but it cannot simultaneously detect carbon sequestration efficiency and vertical profile distribution of ocean environmental dynamic parameters
Solution Approach 1:
The patent merges multiple detection functions (Mie scattering detection, Brillouin scattering detection, temperature measurement, salinity measurement) into a single lidar system. The system combines a 532nm laser emitting subsystem, beam splitters, photodetectors for Mie scattering, Fabry-Perot interferometers for Brillouin scattering, and integrates all detection channels to simultaneously obtain carbon sequestration efficiency and environmental parameters, thereby achieving multi-parameter simultaneous detection through system integration
Solution Approach 2:
The lidar system is designed with multi-functionality to perform diverse detection tasks using a single platform. It can detect particulate backscattering coefficients, volume scattering coefficients, carbon sequestration efficiency, temperature profiles, and salinity profiles simultaneously through different detection channels (Mie scattering channel, Brillouin scattering channel), making the system universally applicable for comprehensive ocean parameter measurement
2Loss of information
If multiple detection parameters are measured simultaneously, then the detection capability is improved, but the data processing complexity increases
Solution Approach 1:
The patent segments the detection system into distinct functional channels: a Mie scattering detection channel for measuring backscattering coefficients, a Brillouin scattering detection channel for temperature and salinity measurements, and separate signal processing paths for each parameter type. This segmentation allows parallel processing of different parameters, reducing information loss while managing data processing complexity through modular architecture
Solution Approach 2:
The patent introduces intermediary components such as beam splitters that separate the incoming light into different detection paths, and Fabry-Perot interferometers that act as mediators to extract Brillouin scattering frequency information. These intermediaries facilitate the simultaneous measurement of multiple parameters by dividing the complex measurement task into manageable sub-tasks that can be processed independently
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables synchronous detection of carbon sequestration efficiency and vertical profile distribution of ocean environmental parameters, facilitating comprehensive analysis of marine ecosystems and carbon cycling processes, supporting ecological conservation and resource management.
Implementation Method 1
combining Mie scattering, Brillouin scattering intensity information, and Brillouin scattering spectra (frequency shift and linewidth) information
Implementation Method 2
combining Mie scattering, Brillouin scattering intensity information, and Brillouin scattering spectra (frequency shift and linewidth) information
Implementation Method 3
a first Fabry-Perot interferometer, a third photodetector, a focusing lens, a pinhole filter, a beam expander, a second Fabry-Perot interferometer
Data Source
AI summary
A lidar system and an inversion method for simultaneously detecting carbon sequestration efficiency of the oceanic biological pump and ocean environmental dynamic parameters. The information of Mie scattering and Brillouin scattering intensity and the information of frequency shift and linewidth of Brillouin scattering spectra are combined, and for the detection requirements of the current ocean carbon cycle and dynamic environmental parameters, the vertical profile distribution of the carbon cycle mechanism and environmental dynamic parameters in the euphotic layer is mainly detected; at the same time, the present disclosure constructs an inversion model of the carbon sequestration efficiency of the oceanic biological pump and the temperature and salinity of the environmental dynamic parameters and realizes the synchronous detection of the carbon sequestration efficiency of the oceanic biological pump and the vertical profile distribution of the ocean environmental dynamic parameters in the euphotic layer.