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Electronic Distance Measuring Instruments01:30

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
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OpticalTrust: A Sensor-to-Blockchain Framework Using Free-Space Optical Communication.

Parveen Bajaj1, Aman Kataria2, Vikram Puri3,4

  • 1University Institute of Engineering, Chandigarh University, Gharuan, Mohali 140413, India.

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|December 17, 2024
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Summary
This summary is machine-generated.

This study integrates Free-Space Optics (FSOs) with blockchain and sensor networks for enhanced data transmission. The framework improves security and reliability for high-speed optical communication systems.

Keywords:
BEREDFAOptiSystemblockchainfree-space optical communicationinterplanetary file system (IPFS)sensor networksmart contract

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Area of Science:

  • Optical Communications
  • Network Security
  • Distributed Systems

Background:

  • The demand for high-speed, secure data transmission drives innovation in integrated communication systems.
  • Free-Space Optics (FSOs) offers a promising alternative for optical communications, facing limitations in conventional fiber optics.
  • Existing systems require enhanced security, reliability, and environmental adaptability.

Purpose of the Study:

  • To present an integrated framework combining FSOs, blockchain, and sensor networks.
  • To address challenges in data transmission speed, security, and environmental adaptation.
  • To analyze FSOs performance and explore sensor network integration.

Main Methods:

  • FSOs system performance analyzed using Quality (Q) Factor and Bit Error Rate (BER).
  • Comparison of FSOs systems with and without Erbium-Doped Fiber Amplifiers (EDFAs) at various bit rates (8-20 Gbps) and distances (5-25 km).
  • Integration of blockchain architecture with smart contracts and InterPlanetary File System (IPFS) for secure data validation and storage.

Main Results:

  • Performance metrics (Q-Factor, BER) evaluated for FSOs systems under different conditions.
  • Blockchain architecture demonstrated for secure storage and validation of FSOs simulation results.
  • Theoretical integration models for distributed sensor arrays with FSOs systems explored.

Conclusions:

  • The integrated framework enhances data transmission security and reliability for FSOs.
  • Blockchain technology provides a robust solution for validating and securing FSOs performance data.
  • Sensor network integration offers potential for improved environmental adaptation and system monitoring in FSOs.