Landing Strobe Optical Signatures for Low-Visibility Zone Detection
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Solution Overview
Problem
In visually degraded conditions such as fog, cloud cover, or dust, existing systems struggle to accurately detect landing zones for aircraft, making it difficult for aircraft to land safely as the visual cues are obscured, and existing beacons may not provide sufficient differentiation between multiple landing zones.
Innovation Solution
A landing zone designation system utilizing master and slave landing strobes that emit synchronized optical signals, allowing an aircraft to determine its position relative to the strobes using a detector and processor, and unique optical signatures for each landing zone to differentiate between them, along with a method to calculate distance to landing by analyzing pixel changes in the optical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional visual detection methods are used to identify landing zones, then the system is simple and easy to operate, but the detection reliability deteriorates in visually degraded conditions such as fog, cloud cover, or dust
Solution Approach 1:
The patent introduces landing strobes as intermediary objects that emit optical signals to mediate between the aircraft and the landing zone. These strobes serve as mediators that transmit positional and identification information through optical signals that can penetrate or be detected despite visual degradation from fog, cloud cover, or dust, thereby improving detection reliability without requiring complex active sensing systems on the aircraft
Solution Approach 2:
The patent replaces traditional mechanical/visual detection systems with an optical signal-based system. Instead of relying on direct visual observation or complex active sensing mechanisms on the aircraft, the system uses passive optical signals emitted by landing strobes at the landing zone, substituting a simpler detection approach that maintains reliability in degraded visual conditions
2Loss of information
If multiple landing zones are marked with identical beacons, then the system is simple to implement, but the ability to differentiate between landing zones deteriorates
Solution Approach 1:
The patent applies local quality by giving each landing zone a unique optical signature through specific configurations of master and slave strobes. Each landing zone's strobe arrangement has distinct characteristics (such as different numbers of strobes, different spatial patterns, or different synchronization patterns) that provide localized identification information, enabling the aircraft to differentiate between multiple landing zones while maintaining overall system simplicity
Solution Approach 2:
The patent segments the landing zone identification system into multiple independent strobe units (master and slave strobes) that can be independently configured. This segmentation allows each landing zone to have its own unique combination of strobe arrangements, enabling differentiation between zones without requiring a completely different system for each zone, thus balancing identification capability with implementation simplicity
3Measurement precision
If the aircraft flies at higher altitude to maintain safety margin, then the safety improves, but the precision of landing zone detection and distance measurement deteriorates
Solution Approach 1:
The patent implements feedback through the optical signal system that provides continuous information about the aircraft's position relative to the landing zone. The master and slave strobes create measurable optical patterns that give feedback on distance and alignment, allowing the aircraft to maintain safer altitudes while still achieving precise landing zone detection and distance measurement through the optical signal analysis system
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 the ability to perceive and accurately identify landing zones through turbid media, enabling safer landings by providing distinct optical signals for each zone and calculating precise landing distances, even in degraded visual conditions.
Implementation Method 1
a master landing strobe configured to emit a master optical signal at periodic intervals. A slave landing strobe spaced a predetermined distance from the master landing strobe can be configured to receive the master optical signal and to generate, from the master optical signal, a slave optical signal synchronized to the periodic intervals
Implementation Method 2
A detector can be provided on an aircraft for detecting the master and slave optical signals
Data Source
AI summary
A landing zone designation system is provided that includes a master and a slave landing strobes. A detector on an aircraft can detect master and slave optical signals, and a processor can be coupled to the detector to compute placement of the aircraft relative to the master and slave landing strobes. A method is provided for designating a landing zone for an aircraft. The method includes emitting first and second optical signals, where a determination is made whether the aircraft is to land at a first landing zone or a second landing zone depending on a difference between the first optical signal and the second optical signal. A distance to landing within the determined first landing zone or the second landing zone can also be determined.