Optical Space Communication Delay Adjustment for Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical space communication systems face challenges in maintaining communication quality due to changes in atmospheric conditions, which cause fluctuations in signal light direction and intensity, and existing delay adjustment methods are inadequate for dynamic changes in delay during communication, especially when using multiple transmission telescopes.
Innovation Solution
An optical space communication device with multiple optical antennas and delay adjustment mechanisms that measure and synchronize delays to ensure synchronized transmission and reception data timing, using delay circuits to adjust for differences in optical path lengths and atmospheric fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission telescopes are used to increase communication capacity and maintain high reception intensity, then communication capacity and signal reliability are improved, but delay differences between multiple beams occur due to different optical path lengths, causing reception timing variation and communication quality deterioration
Solution Approach 1:
The patent implements dynamic delay adjustment by continuously measuring the delay difference between multiple transmission telescopes and actively controlling the delay amount of each telescope's beam. This allows the system to adapt to changing optical path lengths and maintain synchronized reception timing, resolving the contradiction between using multiple telescopes for higher capacity and maintaining communication quality through delay synchronization.
2Device complexity
If the delay amount of each telescope's beam is fixed before communication, then device complexity is reduced, but the delay adjustment cannot reflect changes in optical system delay during communication, leading to reception timing errors under dynamic conditions
Solution Approach 1:
The patent employs feedback control by measuring the delay difference between multiple transmission telescopes during communication and using this measurement to dynamically adjust the delay amount of each telescope's beam. This feedback mechanism ensures that the delay adjustment reflects real-time changes in optical system delay, maintaining accurate reception timing without requiring overly complex predetermined adjustment mechanisms.
3Reliability
If real-time delay measurement and adjustment is implemented for multiple telescopes, then reception timing accuracy is improved under dynamic conditions, but device complexity and measurement precision requirements increase
Solution Approach 1:
The patent implements a self-service delay adjustment mechanism where the system automatically measures its own delay differences and performs corrective adjustments without requiring external intervention. The delay adjustment unit uses the measured delay difference to autonomously control the delay amount of each telescope's beam, reducing the need for complex external measurement and control systems while maintaining high reception timing accuracy.
Data Source
AI summary
An optical space communication device includes first and second optical antennas that transmit first and second transmission light and receive first and second reception light, first and second delay circuits that provide a delay to transmission data included in the first and second transmission light, third and fourth delay circuits that provide a delay to reception data included in the first and second reception light, and a receiver that sets a delay of at least one of the first delay circuit and the second delay circuit and sets a delay of at least one of the third delay circuit and the fourth delay circuit, based on delays between the first and third delay circuits and the first optical antenna, delays between the second and fourth delay circuits and a fourth optical antenna, and delays between a communication destination and the third and fourth delay circuits.