RADAR Antenna Ice Loading Sensor Using Harmonic Absorption
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Solution Overview
Problem
RADAR systems operating in below-freezing conditions face operational degradation due to ice accumulation, leading to radio wave attenuation and potential physical damage, which existing technologies have not adequately addressed.
Innovation Solution
An ice loading sensor unit is integrated into RADAR systems, featuring a sensor unit antenna tunable to a harmonic within an ice absorption band, which emits and detects signal strengths to calculate ice thickness based on signal attenuation rates, enabling corrective actions such as electrical compensation or ice removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RADAR systems operate in below-freezing conditions, then the system can perform surveillance and weather monitoring functions, but ice accumulates on the antenna exterior causing signal attenuation and operational degradation
Solution Approach 1:
The patent implements preliminary detection by continuously monitoring ice accumulation on the antenna using a sensor that detects changes in the antenna's resonant frequency caused by ice mass. This early detection enables the system to take corrective action before severe signal attenuation occurs, maintaining reliable operation in below-freezing conditions
Solution Approach 2:
The system employs feedback through a sensor unit that continuously monitors ice accumulation and provides real-time information to the control system. This feedback loop enables dynamic adjustment of RADAR operations or triggering of ice removal mechanisms, ensuring maintained signal strength and operational reliability despite cold environment challenges
2Temperature
If ice accumulates on the antenna exterior, then the RADAR system continues to operate in cold environments, but radio wave attenuation increases causing degradation of system sensitivity
Solution Approach 1:
The sensor unit continuously monitors ice accumulation by detecting changes in antenna resonant frequency before significant signal attenuation occurs. This preliminary detection allows the system to maintain measurement precision by triggering ice removal or operational adjustments before ice thickness degrades RADAR sensitivity
Solution Approach 2:
The system monitors changes in physical parameters (resonant frequency shifts due to ice mass) to detect ice accumulation. By tracking these parameter changes, the system can compensate for or prevent degradation of measurement precision caused by ice-induced signal attenuation
3Productivity
If ice accumulates on the antenna, then the RADAR system operates in inclement weather, but physical damage to the antenna structure may occur
Solution Approach 1:
The sensor unit provides preliminary warning of significant ice accumulation by monitoring resonant frequency changes. This early detection enables preventive action (ice removal or operational modification) before ice mass becomes sufficient to cause physical damage to the antenna structure, ensuring both continuous operation and structural integrity
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
The sensor unit effectively determines ice thickness and facilitates maintenance of RADAR system performance by compensating for signal degradation, preventing permanent damage and ensuring continuous operation in inclement weather.
Implementation Method 1
a sensor unit antenna, tunable to a harmonic of a RADAR antenna signal, the harmonic having a frequency within an ice absorption band
Data Source
AI summary
Disclosed herein is a system and method for determining a thickness of ice on Radio Frequency (RF) systems The system includes a sensor unit for use in determining the thickness of ice on a surface of a RADAR system having a RADAR antenna, the sensor unit including a sensor unit antenna tunable to a harmonic of a RADAR antenna signal, the harmonic having a frequency within an ice absorption band, wherein the sensor unit antenna emits the harmonic at a first signal strength; and, a sensor unit receiver communicatively coupled to the sensor unit antenna and configured to detect a second signal strength of the harmonic received by the sensor unit antenna.