Optronic System Synchronization Using GPS Timing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optronic systems face challenges in synchronizing operations without revealing their presence on a scene, particularly when independent systems need to operate simultaneously with high precision, such as in semi-active laser systems or mobile cameras, and current methods like wired or radio synchronization are either impractical or reveal the systems' presence to enemies.
Innovation Solution
A method and device for synchronizing optronic systems using a synchronization module with an internal precision clock and a synchronization module that generates a synchronization signal from a reference time signal, adjusted for propagation delays and phase shifts, allowing systems to operate in sync without emitting detectable signals, utilizing International Atomic Time (TAI) or Coordinated Universal Time (UTC) and GPS for precise timing adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wired synchronization is used to achieve precise synchronization between optronic systems, then synchronization precision is improved, but system mobility and operational flexibility deteriorate due to co-location requirements
Solution Approach 1:
The patent introduces an intermediary synchronization signal transmission mechanism that enables precise timing coordination between distributed optronic systems without requiring physical co-location or wired connections. The system uses a centralized synchronization source that broadcasts timing signals to multiple distributed systems, achieving both precision and mobility.
2Adaptability or versatility
If microwave links are used for synchronization between distributed systems, then system mobility is improved, but synchronization precision deteriorates due to propagation delay tolerance requirements
Solution Approach 1:
The patent implements a feedback mechanism where the synchronization system continuously monitors and measures the actual propagation delays in microwave links, then automatically adjusts timing parameters to compensate for these delays. This closed-loop approach maintains high synchronization precision despite varying transmission conditions and distances.
3Measurement precision
If optical signals are emitted for synchronization, then synchronization precision is improved, but detection risk by enemy systems increases
Solution Approach 1:
The patent uses copying by transmitting synchronization information through multiple redundant channels (both optical and radio frequency) simultaneously. The primary synchronization data is copied and transmitted through less detectable RF channels, while optical channels provide backup or enhanced precision when conditions permit, reducing overall detection risk.
4Reliability
If long continuous exposure time is used for laser detection, then detection capability is improved, but contrast between laser pulse spot and scene deteriorates
Solution Approach 1:
The patent implements periodic action by using synchronized short-duration exposure bursts that coincide precisely with expected laser pulse arrival times. Instead of continuous exposure, the system performs repeated brief measurements at predetermined intervals, accumulating detection data over multiple cycles while maintaining high contrast during each individual exposure window.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method of synchronizing optronic systems, of the type operating simultaneously on one and the same scene, each optronic system being intended to emit and/or receive light of a target of the scene and each optronic system comprising an internal precision clock (36) and a module suitable for synchronizing the internal clock (36) with a reference time signal, the method being characterized in that it comprises the following steps: reception and generation of a reference time signal by each synchronization module, the reference time signal being independent of the optronic systems and emanating from an item of equipment different from the optronic systems, and synchronization of the internal clock of each optronic system with the reference time signal by the synchronization module.