Navigational Aid Tone Trigger for DME Identification
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Solution Overview
Problem
Conventional navigational aid systems require expensive cable connections to synchronize the identification signals between DME and localizer/glide slope, which is inconvenient and costly, especially when DME is located remotely.
Innovation Solution
Incorporating an additional tone in the voice band transmitted by the localizer to trigger the DME to broadcast its identification signal, eliminating the need for a cable connection by synchronizing the signals through the voice band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable connections are used to synchronize identification signals between DME and localizer/glide slope, then signal synchronization reliability is improved, but system cost and installation complexity increase
Solution Approach 1:
The patent replaces the mechanical cable connection system with an electromagnetic signal transmission system. The localizer equipment transmits a trigger signal via the voice band channel, and the DME equipment receives this signal wirelessly to synchronize its identification signal broadcast, eliminating the need for physical cable connections while maintaining synchronization reliability.
Solution Approach 2:
The patent introduces the voice band channel as an intermediary medium for signal transmission. Instead of direct cable connections between DME and localizer/glide slope, the trigger signal is transmitted through the voice band channel, serving as a mediator that enables synchronization without direct physical connection.
2Stability of the object's composition
If cable connections are used to synchronize identification signals, then signal transmission stability is improved, but installation cost and convenience worsen
Solution Approach 1:
The patent substitutes the mechanical cable installation process with an electronic signal transmission process. The trigger signal is transmitted through the existing voice band communication channel, eliminating the need for cable installation while maintaining signal transmission stability through the established communication infrastructure.
Solution Approach 2:
The patent utilizes the existing voice band channel for multiple purposes: both for normal voice communication and for transmitting the synchronization trigger signal. This multi-functionality approach eliminates the need for dedicated cable connections while maintaining system stability.
3Adaptability or versatility
If remote DME location is used, then system flexibility and adaptability are improved, but cable connection cost and complexity increase
Solution Approach 1:
The patent replaces the mechanical cable connection system with an electromagnetic transmission system that can cover longer distances without additional complexity. The voice band channel enables the trigger signal to reach remotely located DME equipment wirelessly, maintaining system flexibility while eliminating the need for extensive cable infrastructure.
Data Source
AI summary
Aspects of the present invention relate to methods, systems, and computer-readable media for triggering an identification signal broadcast of a first navigational aid equipment using a tone in the voice band transmitted by a second navigational aid equipment. Aspects include receiving, at the first navigational aid equipment, a tone in a voice band of second navigational aid equipment. Aspects also include transmitting, by the first navigational aid equipment, the identification associated with the first navigational aid equipment identification when the tone is received.