Publications

Unmanned Aerial Vehicle-Based Hyperspectral Imaging and Soil Texture Mapping with Robust AI Algorithms

Pablo Flores Peña, Mohammad Sadeq Ale Isaac, Daniela Gifu, Eleftheria Maria Pechlivan, Ahmed Refaat Ragab

This paper explores the integration of UAV-based hyperspectral imaging and advanced AI algorithms for soil texture mapping and stress detection in agricultural settings. The primary focus lies on leveraging multi-modal sensor data, including hyperspectral imaging, thermal imaging, and gamma-ray spectroscopy, to enable precise monitoring of abiotic and biotic stressors in crops. An innovative algorithm combining vegetation indices, path planning, and machine learning methods is introduced to enhance the efficiency of data collection and analysis. Experimental results demonstrate significant improvements in accuracy and operational efficiency, paving the way for real-time, data-driven decision-making in precision agriculture.

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MDPI, Drones 2025

Advanced Control Strategies for Securing UAV Systems: A Cyber-Physical Approach

Pablo Flores Peña, Mohammad Sadeq Ale Isaac, Daniela Gifu, Ahmed Refaat Ragab

This paper explores the application of sliding mode control (SMC) as a robust security enhancement strategy for unmanned aerial vehicle (UAV) systems. The study proposes integrating advanced SMC techniques with security protocols to develop a dual-purpose system that improves UAV control and fortifies against adversarial actions. The strategy includes dynamic reconfiguration capabilities within the SMC framework, allowing adaptive responses to threats by adjusting control laws and operational parameters. This is complemented by anomaly detection algorithms that monitor deviations in control signals and system states, providing early warnings of potential cyber-intrusions or physical tampering.

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MDPI, Applied System Innovation 2024

Sensing and Control Integration for Thrust Vectoring in Heavy UAVs: Real-World Implementation and Performance Analysis

Mohammad Sadeq Ale Isaac, Pablo Flores Peña, Marco Andrés Luna, Ahmed Refaat Ragab, Pascual Campoy

Unmanned Aerial Vehicles (UAVs) have garnered significant attention among researchers due to their versatility in diverse missions and resilience in challenging conditions. However, electric UAVs often suffer from limited flight autonomy, necessitating the exploration of alternative power sources such as thermal engines. On the other hand, managing thermal engines introduces complexities and internal uncertainties into the system. In this paper, an Adaptive Robust attitude controller (ARAC) is proposed to address these challenges by drawing inspiration from helicopter solutions while minimizing mechanical intricacies.

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World Scientific, Unmanned Systems 2024

Thrust Vectoring Control for Heavy UAVs, Employing a Redundant Communication System

Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Marco Andrés Luna, Mohammad Mehdi Ale Eshagh Khoeini, Pascual Campoy

Recently, various research studies have been developed to address communication sensors for Unmanned Aerial Systems (UASs). In particular, when pondering control difficulties, communication is a crucial component. To this end, strengthening a control algorithm with redundant linking sensors ensures the overall system works accurately, even if some components fail. This paper proposes a novel approach to integrate several sensors and actuators for a heavy Unmanned Aerial Vehicle (UAV).

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MDPI, Sensors 2023

A Proposed System for Multi-UAVs in Remote Sensing Operations

Pablo Flores Peña, Marco Andrés Luna, Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Khaled Elmenshawy, David Martín Gómez, Pascual Campoy, Martin Molina

This paper proposes the design of the communications, control systems, and navigation algorithms of a multi-UAV system focused on remote sensing operations. A new controller based on a compensator and a nominal controller is designed dynamically to regulate the UAVs' attitude. The navigation system addresses the multi-region coverage trajectory planning task using a new approach to solve the CPP problem.

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MDPI, Sensors 2022

Medium-scale UAVs: A Practical Control System Considering Aerodynamics Analysis

Mohammad Sadeq Ale Isaac, Marco Andrés Luna, Ahmed Refaat Ragab, Mohammad Mehdi Ale Eshagh Khoeini, Rupal Kakara, Pascual Campoy, Pablo Flores Peña, Martin Molina

Unmanned aerial vehicles (UAVs) have drawn significant attention from researchers over the last decade due to their wide range of possible uses. Carrying massive payloads concurrent with light UAVs has broadened the aeronautics context, which is feasible using powerful engines; however, it faces several practical control dilemmas.

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MDPI, Drones 2022

WILD HOPPER: A Heavy-duty UAV for Day and Night Firefighting Operations

Mohammad Sadeq Ale Isaac, Pablo Flores Peña, Ahmed Refaat Ragab, Marco A Luna, Pascual Campoy

Forest fires are among the most dangerous accidents, as they lead to the repercussions of climate change by reducing oxygen levels and increasing carbon dioxide levels. These risks led to the attention of many institutions worldwide, most notably the European Union and the European Parliament, which led to the emergence of many directives and regulations aimed at controlling the phenomenon of forest fires in Europe.

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Elsevier, Heliyon 2022

Fast Multi-UAV Path Planning for Optimal Area Coverage in Aerial Sensing Applications

Mohammad Sadeq Ale Isaac, Marco Andrés Luna, Ahmed Refaat Ragab, Pascual Campoy, Pablo Flores Peña, Martin Molina

This paper deals with the problems and the solutions of fast coverage path planning (CPP) for multiple UAVs. Through this research, the problem is solved and analyzed with both a software framework and algorithm. The implemented algorithm generates a back-and-forth path based on the onboard sensor footprint. In addition, three methods are proposed for the individual path assignment.

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MDPI, Sensors 2022

Systemic Integrated Unmanned Aerial System

Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Pablo Flores Peña, Marco A Luna

Systemic integrated Unmanned Aerial System (UAS), is the process of gathering the subsystems into one fulfilled system. This integration is done in order to improve the system performance, reducing operating costs, and improving the time response of the system. Normally, such systems are integrated using different techniques such as communication processes, and computer networking. In this paper, a new integrated system is implemented by linking functionally computing systems and software applications together in one powerful system.

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International Journal of Online & Biomedical Engineering 2022

Mathematical Modeling and Designing a Heavy Hybrid-Electric Quadcopter, Controlled by Flaps

Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Enrique Caballero Garcés, Marco Andres Luna, Pablo Flores Peña, Pascual Campoy Cervantes

Systemic hybrid-electric unmanned aerial vehicles (UAVs) and, especially, quadcopters are so promising due to their long flight endurance and their usage in patrol and rescue missions which gain a high interest to be under examination and test scope by researchers; however, a complete mathematical design is required to fulfill theoretical paper investigates salient sections from hypothesis to implementation. Researchers at Drone Hopper company have conducted various calculations to form a precise novel platform called Duty-Hopper (DH).

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Journal of Unmanned Systems 2021

Unmanned Aerial Vehicle Swarming

Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Marco A Luna, Pablo Flores Peña

Unmanned Aerial Vehicles (UAVs) is a special case of the ad-hoc network, as it is categorized from the Flying ad-hoc network (FANET), which is a subcategory from the ad-hoc network. The massive widely used applications for UAVs through the variety of missions leads the researchers to deep through enhancing such systems by equipping different technologies and techniques for UAVs. Adding swarming facilities for UAVs was our case research interest in Drone Hopper research center to gain the accurate and powerful usage through a swarm of drones to be used in different applications such as firefighting and agriculture.

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2021 International Conference on Engineering and Emerging Technologies (ICEET) 2021

WILD HOPPER Prototype for Forest Firefighting

Mohammad Sadeq Ale Isaac, Ahmed Refaat Ragab, Marco A Luna, Pablo Flores Peña

In Europe, fire represents an important issue for a lot of researchers due to economic losses, environmental disasters, and human death. In the last decade, the European parliament sheds light upon this problem by dealing with the community project "Forest Focus". Thus, researchers and scientific research departments of European companies begin to work on solving and creating different techniques to deal with such a problem.

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International Journal of Online & Biomedical Engineering 2021

Control and Guidance of an Autonomous Quad-rotor Landing Phase on a Moving Platform

Mohammad Sadeq Ale Isaac, Sayyed Hodjatollah Mirtajadini, Abolghasem Naghash

[Abstract not provided in image; placeholder] This paper discusses the control and guidance strategies for an autonomous quad-rotor landing on a moving platform.

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IMAV 2019, Flight Control and Dynamics of the drone 2019

Aerospace Engineering, graduate exams with comprehensive answers

Mohammad Sadeq Ale Isaac, Arman Navizi, Isa Sepahvand, Nafise Abdolmohammadi, Iman Sabahi

[Abstract not provided in image; placeholder] This publication provides comprehensive answers to graduate-level aerospace engineering exams.

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Nasir Publisher 2017