Onboard Weather Radar Wake Vortex Prediction From Aircraft Returns
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Solution Overview
Problem
Existing aircraft radar systems lack the capability to reliably and accurately predict wake vortices from nearby aircraft, relying on external systems like TCAS or ADS-B, which can be unreliable or unavailable.
Innovation Solution
Aircraft-mounted weather radar systems are configured to emit radar signals, process return signals to detect and identify nearby aircraft, determine their size and characteristics, and predict wake vortices based on these parameters, providing real-time alerts and displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aircraft rely on external systems like TCAS or ADS-B to detect wake vortices, then wake vortex detection capability is provided, but system reliability deteriorates when external systems are unavailable or unreliable
Solution Approach 1:
The weather radar system is configured to perform multiple functions: traditional weather detection and new wake vortex detection. By utilizing the existing radar infrastructure for dual purposes, the system eliminates dependence on external systems while maintaining reliability. The radar processor analyzes return signals to detect both weather patterns and wake vortex signatures, making the aircraft self-sufficient for wake vortex detection.
Solution Approach 2:
The aircraft uses its own onboard weather radar system to detect wake vortices generated by other aircraft, rather than relying on external systems. The radar transmitter emits signals that reflect off wake vortices, and the radar processor analyzes these returns to determine wake vortex presence, position, and intensity, enabling the aircraft to serve its own wake vortex detection needs independently.
2Measurement precision
If dedicated wake vortex detection systems are implemented, then wake vortex detection accuracy is improved, but size, weight, power, and cost increase
Solution Approach 1:
The existing weather radar system is repurposed to perform both traditional weather detection and wake vortex detection functions. The same antenna, transmitter, and processor are used for dual purposes, eliminating the need for additional dedicated hardware. This multi-functional approach achieves accurate wake vortex detection without increasing system weight.
Solution Approach 2:
The wake vortex detection functionality is merged with the existing weather radar system rather than being implemented as a separate dedicated system. The radar processor combines analysis of return signals for both weather phenomena and wake vortex characteristics, consolidating detection capabilities into a single integrated system that reduces overall weight and complexity.
3Adaptability or versatility
If weather radar systems are configured for wake vortex detection, then detection functionality is enhanced, but system complexity increases
Solution Approach 1:
The radar system dynamically adjusts its operational mode based on detection needs. The processor can switch between weather detection mode and wake vortex detection mode, or operate in combined mode. This dynamic adaptability allows the system to enhance detection functionality while managing complexity through flexible, reconfigurable processing rather than fixed complex hardware.
Solution Approach 2:
The radar system is configured to perform multiple detection functions using the same hardware infrastructure. The processor analyzes return signals to identify both weather patterns and wake vortex characteristics, providing enhanced detection versatility without proportionally increasing system complexity through shared computational resources and unified signal processing.
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
Enhances detection functionality with reduced size, weight, power, and cost, improving responsivity and accuracy in predicting wake vortices, ensuring safer and smoother flights without reliance on external systems.
Implementation Method 1
The onboard radar system may be mounted on the aircraft and may use radar beams to detect reflected radar signals from weather formations such as convective weather cells associated with turbulence, rain, lightning, and hail
Implementation Method 2
Radar systems may, in some examples, emit one or more radar signals. These radar signals may reflect and/or scatter off one or more objects and return to the radar system as radar return signals
Data Source
AI summary
An example weather radar system includes one or more antennae configured to transmit a radar signal and receive a radar return signal and processing circuitry configured to detect an aircraft based on the radar return signal. The processing circuitry is further configured to, in response to detecting the aircraft, determine, based on a strength of the radar return signal, a size of the aircraft and predict, based on the size of the aircraft, a wake vortex of the aircraft including a predicted position of the predicted wake vortex.