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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
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    This study introduces a novel nanomachine system using directional molecular communication and bacteria carriers for faster, cooperative target tracking. The proposed beacon system enhances nanomachine navigation and information sharing for improved efficiency in nanomedicine applications.

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    Area of Science:

    • Nanotechnology
    • Molecular Communication
    • Biomedical Engineering

    Background:

    • Traditional electromagnetic waves are unsuitable for nano-scale communication.
    • Molecular Communication (MC) offers biocompatibility and low energy consumption for in-body applications.
    • Diffusion-based MC (DbMC) faces limitations in speed, range, and signal loss due to diffusion's randomness.

    Purpose of the Study:

    • To propose a novel massive beacon coordinate system for enhanced nanomachine navigation and target tracking.
    • To improve the efficiency of molecular communication for applications like drug delivery.
    • To enable cooperative fast target tracking using nanomachines and bacteria carriers.

    Main Methods:

    • Developed a massive beacon coordinate system to guide nanomachines and determine their positions.
    • Utilized E. coli bacteria carriers to transfer DNA-encoded information between nanomachines.
    • Implemented directional molecular communication (DMC) by incorporating chemotaxis for directed molecule movement.
    • Evaluated system performance through simulations, comparing it against diffusion-based models.

    Main Results:

    • The proposed Directional Molecular Communication system significantly improves target tracking efficiency compared to diffusion-based methods.
    • The beacon coordinate system effectively aids nanomachine navigation and position determination.
    • Bacteria-mediated information transfer enables nanomachines to share real-time location data for cooperative tracking.

    Conclusions:

    • The novel beacon coordinate system and bacteria-assisted DMC provide a viable solution for efficient, cooperative target tracking at the nano-scale.
    • This approach holds promise for advancing applications in targeted drug delivery and nanomedicine.
    • Further investigation into factors influencing target tracking performance is warranted.