Publications 2023

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https://hdl.handle.net/20.500.14170/3705

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Browsing Publications 2023 by Author "Abadal-Salam T.H."
  • Publication
    Enhancing UAV Safety: Accurate Distance Measurement with YOLOV8-based Measuring Application
    ( 2023-01-01)
    Jack Lee L.
    ;
    Hazry Desa
    ;
    Muhammad Azizi A.
    ;
    Abadal-Salam T.H.
    ;
    Hassan T.M.
    This article introduces a lightweight and efficient model for measuring applications, aimed at enhancing the current UAV monitoring system. The primary objective of this project is to develop a measuring application capable of determining and displaying the distance between the camera on the UAV and the facial model. The YOLOV8 framework is employed as a detection model to identify and interpret objects within the region of interest. Additionally, the algorithm incorporates the concept of focal length in lenses to calculate the distance between the facial expressions of a human face and the camera. To assess the algorithm's accuracy, facial models were placed at various distances from the camera during testing. The predicted distance values obtained through the algorithm were then compared to the actual measured distances using a measuring tape. The results demonstrated a maximum tolerance of ±0.9 cm, indicating the algorithm's reliable performance in predicting distance measurements.
  • Publication
    The directional antenna tracker for enhancing range communication between UAVs and Ground Control Station
    ( 2023-01-01)
    Aizat I.M.
    ;
    Hazry Desa
    ;
    Muhammad Azizi Azizan
    ;
    Abadal-Salam T.H.
    ;
    Hassan T.M.
    This paper discusses the development of an antenna tracker project focused on evaluating a 2.4 GHz Yagi Uda directional antenna connected to an NRF24L01 transceiver. It employs a gear reduction system for precise yaw and pitch control using two servo motors. The tracker calculates rotation angles using the Haversine formula for coordinates and inverse tangent trigonometry for elevation. Experiments took place in an open area with a stationary Ground Control Station (GCS) and a moving Unmanned Aerial Vehicle (UAV) to assess performance. The experiments comprised three tests: first, GCS without the Yagi Uda antenna or tracker; second, GCS with the Yagi Uda antenna but without the tracker, positioned along a 30-degree angle away from the transmitter; and third, GCS with both the Yagi Uda antenna and the tracker. The UAV gradually moved away from the tracker in 5-meter intervals until data loss occurred. The test results are based on received coordinates, distance, temperature, humidity, and data loss. Among the three tests, Test 3 demonstrates the best outcome, where the Yagi Uda antenna successfully receives data up to 180 meters before experiencing data loss.
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