A synthesis of machine learning and internet of things in developing autonomous fleets of heterogeneous unmanned aerial vehicles for enhancing the regenerative farming cycle
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Faris A. Almalki, Marios C. Angelides
Regenerative farming asks agriculture to do more than produce food: it must also rebuild soil, support living variety, and reduce harm to the climate. This paper asks whether a self-directing fleet of flying machines can help make that practical.
The use of Unmanned Aerial Vehicles (UAVs) for agricultural monitoring and management offers additional advantages over traditional methods, ranging from cost reduction to environmental protection, especially when they utilize Machine Learning (ML) methods, and Internet of Things (IoT). This article presents an autonomous fleet of heterogeneous UAVs for use in regenerative farming the result of a synthesis of Deep Reinforcement Learning (DRL), Ant Colony Optimization (ACO) and IoT. The resulting aerial framework uses DRL for fleet autonomy and ACO for fleet synchronization and task scheduling inflight. A 5G Multiple Input Multiple Output-Long Range (MIMO-LoRa) antenna enhances data rate transmission and link reliability. The aerial framework, which has been originally prototyped as a simulation to test the concept, is now developed into a functional proof-of-concept of autonomous fleets of heterogeneous UAVs. For assessing performance, the paper uses Normalized Difference Vegetation Index (NDVI), Mean Squared Error (MSE) and Received Signal Strength Index (RSSI). The 5G MIMO-LoRa antenna produces improved results with four key performance indicators: Reflection Coefficient (S11), Cumulative Distribution Functions (CDF), Power Spectral Density Ratio (Eb/No), and Bit Error Rate (BER). Keywords Autonomous UAV fleet · IoT · Machine learning · Wireless communications · Regenerative farming
Transcript
Regenerative farming asks agriculture to do more than produce food: it must also rebuild soil, support living variety, and reduce harm to the climate. This paper asks whether a self-directing fleet of flying machines can help make that practical.
Regenerative farming is regarded as the next evolution in the agricultural sustainability cycle: restoring soil health, encouraging plant diversity and biodiversity, mitigating climate change, and producing food sustainably. But this will require a change in farmer attitudes and perceptions, along with the development and integration of new technologies into farming.
The framework gives a fleet of different flying machines the ability to act independently and to synchronize and schedule tasks. Think of it as a heterogeneous crew whose members can act autonomously while coordinating and scheduling tasks, rather than waiting for one person to direct every step.
The fleet is used in regenerative tree farming for seeding, irrigation, and harvesting, with very little human intervention. A group of different flying machines creates two problems: each vehicle must act independently, and the group must stay coordinated. The framework therefore uses two machine-learning brains, forming an operational system designed to support the fleet’s collective and cohesive behaviour.
The combined advantages of flying machines, machine learning, and connected devices are used across training, testing, and validation. The validation is demonstrated in practice for monitoring crops in regenerative farming. The framework goes through training, testing, and validation, and the process validates in forty-two iterations, after which the error rates do not drop any lower.
During the next iteration, training terminates because the error rate starts to increase. The wireless link using the directional multi-antenna system outperforms an omnidirectional antenna. As the signal-to-noise measure and error rate decline, wireless-link performance improves, indicating low error rates and minimum use of transmission power.
The system improves coverage range without increasing transmission power, while keeping signal loss and fading reasonable. The completed framework has two artificial brains: one for fleet autonomy, and one for fleet synchronisation and task scheduling. A working demonstration uses an autonomous and synchronised fleet in regenerative tree-farming cycles—seeding, irrigation, and harvesting—with a minimum amount of human intervention.
Measurements from the farm lead to appropriate actions for achieving farming precision. The proposed system joins flying machines, sensing, and learned decision-making so different vehicles can coordinate farm work with little human intervention.
The result is a tested path toward more precise monitoring in regenerative farming.
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