Laser-Induced Plasma Relay for Non-Line-of-Sight Optical Links
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Solution Overview
Problem
Optical communication methods face challenges in non-line-of-sight transmission due to the difficulty of higher frequency signals penetrating common building materials, limiting their range to direct line-of-sight applications.
Innovation Solution
A method utilizing laser-induced plasma at an atmospheric point to generate omnidirectional light, enabling communication through direct or indirect line-of-sight reception by transmitters and receivers, allowing for non-line-of-sight worldwide optical communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical communication uses direct line-of-sight transmission, then communication reliability is improved, but communication versatility deteriorates
Solution Approach 1:
The patent introduces a relay satellite as an intermediary node in space to forward optical signals between ground stations that do not have direct line-of-sight. The satellite receives optical signals from one ground station and retransmits them to another, enabling communication without direct visual contact between transmitting and receiving ground stations while maintaining signal reliability through controlled relay transmission.
2Adaptability or versatility
If optical communication transmits through obstacles, then communication versatility is improved, but transmission capability deteriorates
Solution Approach 1:
The patent moves the communication relay node from the ground level to the space dimension by deploying relay satellites in orbit. This dimensional transition allows optical signals to bypass ground-based obstacles such as buildings, terrain, and atmospheric interference by transmitting through the vacuum of space, where transmission capability is not degraded by terrestrial obstacles.
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
Enables non-line-of-sight communication by generating plasma at an atmospheric point to radiate omnidirectional light, facilitating signal reception and demodulation, thereby achieving worldwide transmission.
Implementation Method 1
A method utilizing laser-induced plasma at an atmospheric point to generate omnidirectional light
Implementation Method 2
generating plasma at the atmospheric point and radiating omnidirectional light
Data Source
AI summary
A communication method including emitting laser pulses as a signal using one or more transmitters at an atmospheric point. Plasma is generated at the atmospheric point to radiate omnidirectional light. The plasma from the atmospheric point is detected using one or more receivers. The one or more receivers have a direct line-of-sight to the atmospheric point to receive the signal from the one or more transmitters via the omnidirectional light generated by the plasma. The signal is demodulated from the transmitted plasma at each receiver, thereby transmitting information encoded on the signal.