Tsunami Radar Flow Velocity to Wave Height Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current tsunami monitoring systems face challenges in accurately predicting wave height and arrival time due to limitations in measuring tsunami flow velocity and relying on incomplete data, especially for unexpected tsunamis.
Innovation Solution
A tsunami monitoring system that uses a transmitting and receiving antenna to radiate and receive radio waves, generating a beat signal from the frequency difference to calculate sea surface flow velocity and estimate wave height, allowing direct prediction of tsunami wave height from flow velocity distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If marine radar is used to measure sea surface flow velocity, then wide range observation is achieved, but direct wave height measurement is lost
Solution Approach 1:
The patent introduces an intermediary relationship between flow velocity and wave height through physical laws. The wave height estimation unit uses the measured flow velocity as an intermediary parameter to indirectly estimate wave height, bridging the gap between what the radar can directly measure (flow velocity) and what is needed for tsunami prediction (wave height).
Solution Approach 2:
The patent replaces direct mechanical/wave measurement methods with radar-based electromagnetic wave measurement. Instead of using buoys or wave sensors that directly measure wave height, the system uses radar to measure flow velocity and substitutes this measurement through computational estimation to obtain wave height information.
2Productivity
If empirical rules and databases are used to predict wave height, then prediction can be performed, but accuracy deteriorates for unexpected tsunamis
Solution Approach 1:
The patent performs preliminary measurement of flow velocity using radar before the tsunami reaches the coast. This early measurement allows the system to initiate prediction processes in advance, providing lead time for evacuation while maintaining accuracy by using actual measured data rather than relying solely on pre-prepared databases.
Solution Approach 2:
The system uses actual measured flow velocity data as feedback to continuously update and refine tsunami predictions. Rather than relying on static empirical rules, the system dynamically adjusts predictions based on real-time radar measurements of sea surface flow, improving accuracy for unexpected tsunami events.
3Measurement precision
If buoys and sensors are deployed on and in the sea, then direct tsunami measurement is achieved, but maintenance difficulty and cost increase
Solution Approach 1:
The patent uses radar to create a remote copy of the tsunami's flow velocity characteristics without physical contact. Instead of deploying physical sensors in the tsunami path, the radar system captures electromagnetic wave reflections from the sea surface, creating a digital representation of tsunami conditions that can be analyzed without exposing physical equipment to the harsh marine environment.
Solution Approach 2:
The patent replaces mechanical sensor systems (buoys, wave gauges) with an electromagnetic wave-based radar system. This substitution eliminates the need for physical equipment deployment in the sea, thereby removing maintenance requirements while preserving measurement capability through non-contact remote sensing.
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 highly accurate prediction of tsunami wave height and arrival time, including for unexpected events, by directly measuring flow velocity and estimating wave height from radio wave data without relying on databases or empirical equations.
Implementation Method 1
a signal processor portion configured to generate a beat signal of a frequency difference between the transmission signal and the receiving signal
Data Source
AI summary
A tsunami monitoring system includes a transmitting antenna configured to radiate a transmission signal to detect a tsunami as a radio wave toward a sea, and a receiving antenna configured to receive reflected waves reflected by the tsunami as a receiving signal. The tsunami monitoring system includes a signal generator circuit configured to generate the transmission signal having a predetermined frequency, a signal processor portion configured to generate a beat signal of a frequency difference between the transmission signal and the receiving signal, and a wave height estimator portion configured to divide a radio wave radiation region into a plurality of regions, calculate a flow velocity of a sea surface of the tsunami for each region on the basis of the beat signal, and estimate a wave height of the tsunami from a calculated flow velocity.