Radar Warning Signal Embedding in Sensor Pulses
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Solution Overview
Problem
Current methods for providing timely warnings of impending collisions between parked or taxiing aircraft and ground vehicles are costly and often fail to deliver effective alerts to the relevant vehicles.
Innovation Solution
The system embeds a warning signal in a sensor pulse, using radar and RFID technology to selectively alert vehicles within the host aircraft's field of view that are on a collision course, while minimizing false alarms by using beamshaping and unique RFID addresses to narrow the alert transmission to only relevant receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wide sensor field of view is used to detect all potential threats, then detection coverage is improved, but the number of false alarms increases due to multipath reflections and irrelevant vehicles receiving warnings
Solution Approach 1:
The patent applies beamshaping to create localized warning beams with specific spatial characteristics. The warning signal is concentrated in a narrow angular sector directed at the specific threat vehicle, while other regions receive no warning signal. This localizes the effect of the warning system to only the relevant target, preventing false alarms to unrelated vehicles while maintaining comprehensive detection coverage through the broader sensor field of view.
2Reliability
If warning signals are broadcast to all vehicles in the sensor field, then all potential threats are alerted, but irrelevant vehicles receive false alarms reducing system effectiveness
Solution Approach 1:
The patent segments the warning signal transmission by dividing the sensor field into distinct angular sectors. Each sector corresponds to a specific detection zone, and warning signals are transmitted only to vehicles detected in those specific zones. This segmentation is achieved through beamshaping that creates narrow, directed warning beams. Consequently, only vehicles posing actual collision threats receive warnings, while irrelevant vehicles in other sectors remain unaffected, eliminating false alarms.
3Object-affected harmful factors
If beamshaping is used to narrow the warning beam, then false alarms are reduced, but the system complexity increases
Solution Approach 1:
The patent introduces beamshaping as an intermediary component between the radar sensor and the warning signal transmission. This beamshaping element (such as a phased array or directional antenna system) acts as a mediator that takes the broad sensor field of view and transforms it into narrow, directed warning beams. The beamshaping intermediary enables precise spatial control of warning signals without requiring complex individual processing for each vehicle, thereby reducing false alarms while managing system complexity through a dedicated intermediate subsystem.
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
This approach reduces the number of false alarms and ensures timely, targeted warnings to vehicles at risk of collision, enhancing safety and operational efficiency by focusing alerts on vehicles that require caution.
Implementation Method 1
When a taxi anticollision system of a host aircraft senses a threat headed for the aircraft... the radar issues a dedicated pulse for reading and alerting the receiving device
Implementation Method 2
the aircraft's sensor reads an RFID device embedded in a receiver on the target vehicle
Data Source
AI summary
Systems and methods for embedding a warning signal in a sensor pulse. When a taxi anticollision system of a host aircraft senses a threat headed for the aircraft, a warning signal is embedded in a sensor pulse to warn the offending vehicle that it is in the field of view of the host aircraft's sensor and is moving on a trajectory that is threatening collision with the host aircraft. Alternately, the radar issues a dedicated pulse for reading and alerting the receiving device.