Weather Balloon Sensor Error Compensation via Inverted Directional Measurement
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Solution Overview
Problem
Weather balloons experience first-type thermometer errors due to measurement delays, leading to imprecise data collection, which hampers accurate weather predictions.
Innovation Solution
A method involving approaching locations in two opposite directions with equal absolute speeds to measure physical quantities, allowing for the neutralization of first-type thermometer errors by considering measurements from both directions, and using a device like an aircraft to implement this method for precise data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurements are taken during the ascent of a weather balloon, then altitude-dependent physical quantities can be measured, but first-type thermometer errors occur due to measurement delays
Solution Approach 1:
The patent applies the inversion principle by conducting measurements in both upward and downward directions. Instead of only measuring during ascent, the measuring device measures physical quantities during both the ascent phase and the descent phase (after balloon burst). By comparing measurements from both directions, the system identifies and compensates for first-type thermometer errors that occur during single-direction measurements, thereby improving measurement precision.
2Quantity of substance
If a weather balloon is used for measurement, then altitude-dependent physical quantities can be obtained, but the measurement data contains first-type thermometer errors
Solution Approach 1:
The patent implements feedback by using measurements from the descent phase to correct errors in measurements from the ascent phase. The system compares physical quantity measurements taken during ascent with corresponding measurements taken during descent, identifies the first-type thermometer errors through this feedback comparison, and applies corrections to obtain more accurate measurement data.
Data Source
AI summary
According to the present invention, a method and a device for determining a physical quantity at a plurality of locations are provided. The method according to the invention comprises approaching the plurality of locations in a first predetermined direction, wherein at each location of the plurality of locations a first measured value of the physical quantity is measured, approaching the plurality of locations in a second predetermined direction substantially opposite to the first predetermined direction, wherein at each location of the plurality of locations a second measured value of the physical quantity is measured, and establishing a determination value for the physical quantity at a respective location of the plurality of locations based on the first and second measured values of the physical quantity which have been measured at the respective location.