• Advanced Institute of Engineering and Technology (AVITECH)

  • Research Projects

    Telecommunication: Aeronautical mobile and a ground station interactions

    Transmission among aeronautical systems and ground stations are of a major importance for numerous operational configurations. In this study, we focus on two aspects of this subject:

    1. Transmission link between an UAV (Unmanned Aerial Vehicle) and a ground station: How can we evaluate the transmission and the data rate qualities for spatially remote configurations?

    2. Impact of interferences generated by an emitting ground station (such as radars) on civilian aircraft communication systems: Can we find a relationship among the interferences and the distances between civilian air traffic and a surveillance radar?

    To answer both questions, we need to estimate the attenuation of transmitted signals between the ground station and the UAV. In the literature, one can find various standard models developed and tested in the last decades. Nevertheless, the accuracy and the robustness of previous models remain open to discussion especially when the aeronautical systems fly at low altitude or in areas of high reliefs. In this case, the interactions with the ground station become far more complex.

    ITU (International Telecommunication Union) officially recommends a model mainly based on the IF-77 electromagnetic wave propagation model. However, French team at IUT showed some drawbacks of the proposed model related to ITU recommendations P.525 and P.526 for areas of high reliefs.

    Our project consists firstly to implement, analyze and test the IF-77 model in order to highlight its weaknesses under various specific configurations (low altitude, high relief). In addition, the obtained simulation results should be also compared to the results provided by the American aeronautical agency.

    In a second step, we should suggest some solutions to address the weaknesses of the classical model. We should pay a particular attention to the consistency of the modified model and various existing ITU recommendations (P.525 and P.526 for instance).

    Finally, the theoretical propagation models must allow a realistic estimation for our two major concerns: the distance of coordination for the interaction between radars and civilian aircrafts, the data rate between UAV and a ground stations.

    Selected Publications

    Viet-Dung Nguyen, Huy Phan, Ali Mansour, Arnaud Coatanhay, Thierry Marsault. On the proof of recursive Vogler algorithm for multiple knife-edge diffraction. IEEE Transactions on Antennas and Propagation , November 2020. [Early access]

    Nguyen, Viet Dung and Phan, Huy and Mansour, Ali and Coatanhay, Arnaud. VoglerNet: multiple knife-edge diffraction using deep neural network. 14th European Conference on Antennas and Propagation (EuCAP), March 2020, Copenhagen, Denmark.

    Other information

    Contact: Dr. Nguyen Viet Dung


    EEG signal processing from the computer vision perspective

    In this work, we study the processing of EEG signals in the image domain, i.e., visualizing the signal in the binary image and applying computer vision techniques for signal smoothing and classification. Some research questions are being investigated: 1. How well can we smooth the signal in the image domain? Here, we plot the interested […]

    Vision-based crack detection with crack propagation modeling

    In this work, the propagation of cracks on some materials, such as concrete, is analyzed, the best-fit model of which is employed for vision-based crack detection. Some research questions are being investigated: 1. What is the correlation between simulated crack propagation and real-world crack? Here, we measure the fitting errors between best-fit regression models of […]

    Machine learning based beacon placement optimization for indoor robots localization

    Indoor localization systems usually consist of transceiver with fixed positions, which are called beacons. These beacons act as landmarks for localizing objects that need to be positioned. One can easily see that the positions of beacons have a great impact on the performance of the localization system. The problem of beacon placement optimization is to […]