UAV Aerosol Sensing for Real-Time Atmospheric Extinction
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Solution Overview
Problem
Conventional atmospheric characterization systems fail to provide accurate, real-time in situ measurements of atmospheric extinction coefficients, particularly for particles smaller than 10 microns, leading to errors in radiative transfer calculations and optical applications.
Innovation Solution
An unmanned aerial vehicle equipped with a condensation particle detection payload and data acquisition board to determine particle count and size information, calculating extinction coefficients using formulas that integrate particle-specific efficiencies and optical depth, enabling precise transmission information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional atmospheric characterization tools use surface observations or climatological values, then the system complexity is low, but the measurement precision of extinction coefficients deteriorates due to approximations and inability to capture real-time conditions
Solution Approach 1:
The patent transitions from ground-based surface observations to three-dimensional atmospheric measurements by deploying an unmanned aerial vehicle that can sample aerosol particles at multiple altitudes and horizontal positions, enabling vertical and horizontal profiling of extinction coefficients throughout the atmospheric boundary layer
Solution Approach 2:
The patent introduces an unmanned aerial vehicle as an intermediary platform carrying aerosol particle counters and weather measurement devices, serving as a mobile intermediate system between ground-based observatories and the atmospheric boundary layer to obtain in-situ measurements
2Reliability
If conventional tools use NWP data and surface observations, then the ease of operation is high, but the reliability of extinction information deteriorates due to failure to account for anomalous weather conditions
Solution Approach 1:
The patent performs preliminary in-situ measurements of aerosol particle counts, sizes, and weather parameters before conducting radiative transfer calculations or directed energy applications, ensuring that actual atmospheric conditions are captured rather than relying on predictions
Solution Approach 2:
The system provides real-time feedback on actual atmospheric conditions including anomalous weather events, allowing operators to adjust radiative transfer calculations and optical applications based on measured rather than predicted conditions
3Measurement precision
If existing UAV payloads are used, then the device complexity is low, but the measurement precision of particle count information deteriorates due to inability to detect particles less than 10 microns
Solution Approach 1:
The patent replaces conventional mechanical particle detection methods with condensation particle counters that use vapor condensation physics to detect and size aerosol particles, enabling measurement of particles as small as 0.01 microns rather than the 10-micron limit of traditional systems
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 accurate, real-time determination of atmospheric extinction coefficients, enhancing the accuracy of radiative transfer calculations and directed energy applications by providing precise particle count and size information across vertical and horizontal profiles.
Implementation Method 1
a condensation particle detection payload mounted to the central body via the payload mounting interface, the condensation particle detection payload being configured to generate first particle count information and first particle size information
Data Source
AI summary
A method and apparatus used to determine atmospheric extinction coefficients in conjunction with an unmanned aerial vehicle are provided. The unmanned aerial vehicle may include a central body, at least one motor operatively connected to the central body, a condensation particle detection payload, and a data acquisition board including memory operatively connected to the data acquisition board, and a processor configured to generate extinction information.