Goto

Collaborating Authors

 Drones


Mass Russian drone strike hits northeast Ukraine, disrupts TV and radio signal

FOX News

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. The northeastern Ukrainian border region of Sumy said parts of its territory had lost television and radio signal on Thursday after Russia launched a mass overnight drone attack that damaged communications infrastructure. The attack with 36 drones hit four cities in Sumy region and television facilities in neighboring Kharkiv region, officials said, suggesting Moscow was trying a new tactic of striking at communications more than two years into its full-scale invasion. "As a result of the damage, part of the territory of the region (temporarily) cannot receive Ukrainian television and radio signal," the region's administration said in a statement on Telegram messenger.


Scalable Autonomous Drone Flight in the Forest with Visual-Inertial SLAM and Dense Submaps Built without LiDAR

arXiv.org Artificial Intelligence

Forestry constitutes a key element for a sustainable future, while it is supremely challenging to introduce digital processes to improve efficiency. The main limitation is the difficulty of obtaining accurate maps at high temporal and spatial resolution as a basis for informed forestry decision-making, due to the vast area forests extend over and the sheer number of trees. To address this challenge, we present an autonomous Micro Aerial Vehicle (MAV) system which purely relies on cost-effective and light-weight passive visual and inertial sensors to perform under-canopy autonomous navigation. We leverage visual-inertial simultaneous localization and mapping (VI-SLAM) for accurate MAV state estimates and couple it with a volumetric occupancy submapping system to achieve a scalable mapping framework which can be directly used for path planning. As opposed to a monolithic map, submaps inherently deal with inevitable drift and corrections from VI-SLAM, since they move with pose estimates as they are updated. To ensure the safety of the MAV during navigation, we also propose a novel reference trajectory anchoring scheme that moves and deforms the reference trajectory the MAV is tracking upon state updates from the VI-SLAM system in a consistent way, even upon large changes in state estimates due to loop-closures. We thoroughly validate our system in both real and simulated forest environments with high tree densities in excess of 400 trees per hectare and at speeds up to 3 m/s - while not encountering a single collision or system failure. To the best of our knowledge this is the first system which achieves this level of performance in such unstructured environment using low-cost passive visual sensors and fully on-board computation including VI-SLAM.


Israeli drone strike kills Hamas member in Lebanon

Al Jazeera

An Israeli drone strike has killed a member of Hamas and one other person in southwestern Lebanon near a refugee camp housing displaced Palestinians. It comes amid increased cross-border attacks between Israel and Lebanon.


Stefanik rips Obama AG Loretta Lynch over lobbying gig for Chinese military company

FOX News

EXCLUSIVE: House GOP Conference Chair Elise Stefanik, R-N.Y., is criticizing former Attorney General Loretta Lynch for reportedly lobbying the Pentagon on behalf of a company known as DJI, which makes Chinese military tech. "It is disgraceful but unsurprising that Barack Obama's former Attorney General Loretta Lynch is now working on behalf of a Communist Chinese drone company that the Department of Defense has identified as a Chinese military company," Stefanik told Fox News Digital. "Former Attorney General Loretta Lynch is lobbying the DOD to request they remove DJI from this list so the Communist Chinese company can operate with impunity in America. U.S. government officials, both past and present, should be working to ban these Communist Chinese spy drones and bolster the domestic drone industry, not advocating on behalf of a Chinese military company and the Chinese Communist Party." House GOP Conference Chair Elise Stefanik is going after ex-Attorney General Loretta Lynch for a report that links her to a Chinese military firm.


Safe Road-Crossing by Autonomous Wheelchairs: a Novel Dataset and its Experimental Evaluation

arXiv.org Artificial Intelligence

Safe road-crossing by self-driving vehicles is a crucial problem to address in smart-cities. In this paper, we introduce a multi-sensor fusion approach to support road-crossing decisions in a system composed by an autonomous wheelchair and a flying drone featuring a robust sensory system made of diverse and redundant components. To that aim, we designed an analytical danger function based on explainable physical conditions evaluated by single sensors, including those using machine learning and artificial vision. As a proof-of-concept, we provide an experimental evaluation in a laboratory environment, showing the advantages of using multiple sensors, which can improve decision accuracy and effectively support safety assessment. We made the dataset available to the scientific community for further experimentation. The work has been developed in the context of an European project named REXASI-PRO, which aims to develop trustworthy artificial intelligence for social navigation of people with reduced mobility.


Anti-Jamming Path Planning Using GCN for Multi-UAV

arXiv.org Artificial Intelligence

This paper addresses the increasing significance of UAVs (Unmanned Aerial Vehicles) and the emergence of UAV swarms for collaborative operations in various domains. However, the effectiveness of UAV swarms can be severely compromised by jamming technology, necessitating robust antijamming strategies. While existing methods such as frequency hopping and physical path planning have been explored, there remains a gap in research on path planning for UAV swarms when the jammer's location is unknown. To address this, a novel approach, where UAV swarms leverage collective intelligence to predict jamming areas, evade them, and efficiently reach target destinations, is proposed. This approach utilizes Graph Convolutional Networks (GCN) to predict the location and intensity of jamming areas based on information gathered from each UAV. A multi-agent control algorithm is then employed to disperse the UAV swarm, avoid jamming, and regroup upon reaching the target. Through simulations, the effectiveness of the proposed method is demonstrated, showcasing accurate prediction of jamming areas and successful evasion through obstacle avoidance algorithms, ultimately achieving the mission objective. Proposed method offers robustness, scalability, and computational efficiency, making it applicable across various scenarios where UAV swarms operate in potentially hostile environments.


Adaptive morphing of wing and tail for stable, resilient, and energy-efficient flight of avian-informed drones

arXiv.org Artificial Intelligence

Avian-informed drones feature morphing wing and tail surfaces, enhancing agility and adaptability in flight. Despite their large potential, realising their full capabilities remains challenging due to the lack of generalized control strategies accommodating their large degrees of freedom and cross-coupling effects between their control surfaces. Here we propose a new body-rate controller for avian-informed drones that uses all available actuators to control the motion of the drone. The method exhibits robustness against physical perturbations, turbulent airflow, and even loss of certain actuators mid-flight. Furthermore, wing and tail morphing is leveraged to enhance energy efficiency at 8m/s, 10m/s and 12m/s using in-flight Bayesian optimization. The resulting morphing configurations yield significant gains across all three speeds of up to 11.5% compared to non-morphing configurations and display a strong resemblance to avian flight at different speeds. This research lays the groundwork for the development of autonomous avian-informed drones that operate under diverse wind conditions, emphasizing the role of morphing in improving energy efficiency.


CART: Caltech Aerial RGB-Thermal Dataset in the Wild

arXiv.org Artificial Intelligence

We present the first publicly available RGB-thermal dataset designed for aerial robotics operating in natural environments. Our dataset captures a variety of terrains across the continental United States, including rivers, lakes, coastlines, deserts, and forests, and consists of synchronized RGB, long-wave thermal, global positioning, and inertial data. Furthermore, we provide semantic segmentation annotations for 10 classes commonly encountered in natural settings in order to facilitate the development of perception algorithms robust to adverse weather and nighttime conditions. Using this dataset, we propose new and challenging benchmarks for thermal and RGB-thermal semantic segmentation, RGB-to-thermal image translation, and visual-inertial odometry. We present extensive results using state-of-the-art methods and highlight the challenges posed by temporal and geographical domain shifts in our data.


MorphoGear: An UAV with Multi-Limb Morphogenetic Gear for Rough-Terrain Locomotion

arXiv.org Artificial Intelligence

Robots able to run, fly, and grasp have a high potential to solve a wide scope of tasks and navigate in complex environments. Several mechatronic designs of such robots with adaptive morphologies are emerging. However, the task of landing on an uneven surface, traversing rough terrain, and manipulating objects still presents high challenges. This paper introduces the design of a novel rotor UAV MorphoGear with morphogenetic gear and includes a description of the robot's mechanics, electronics, and control architecture, as well as walking behavior and an analysis of experimental results. MorphoGear is able to fly, walk on surfaces with several gaits, and grasp objects with four compatible robotic limbs. Robotic limbs with three degrees of freedom (DoFs) are used by this UAV as pedipulators when walking or flying and as manipulators when performing actions in the environment. We performed a locomotion analysis of the landing gear of the robot. Three types of robot gaits have been developed. The experimental results revealed low crosstrack error of the most accurate gait (mean of 1.9 cm and max of 5.5 cm) and the ability of the drone to move with a 210 mm step length. Another type of robot gait also showed low crosstrack error (mean of 2.3 cm and max of 6.9 cm). The proposed MorphoGear system can potentially achieve a high scope of tasks in environmental surveying, delivery, and high-altitude operations.


Russia claims to repel major Ukrainian drone strikes

Al Jazeera

Ukraine launched one of its most severe attacks into Russia on Tuesday – destroying critical energy infrastructure. Meanwhile, Russia claims it is doing everything necessary to thwart new attacks – including the invasion of anti-Kremlin troops threatening to disrupt the upcoming presidential election.