Drones
What is behind Israel's major attack on Jenin?
Israel has launched one of its biggest attacks on the occupied West Bank, killing at least eight Palestinians in the Jenin refugee camp and wounding dozens more. The latest operation, ongoing on Monday, marks a significant escalation and follows a raid in Jenin two weeks ago that killed seven Palestinians and that was itself one of the largest conducted in years. Let's take a closer look at Israel's targeting of Jenin. The latest incursion into Jenin began on Sunday night with at least 10 air attacks in the densely-packed area, which houses some 14,000 displaced Palestinians in less than half a square kilometre (0.20sq mile). The attack included drone strikes and a missile, which damaged buildings and infrastructure, sending smoke billowing from the wreckage.
Israel deploys thousands of troops, drones in attack on Jenin stronghold in terrorism 'hotspot'
Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. The Israeli military deployed thousands of troops and drones in an attack on a Palestinian militant stronghold in the West Bank on Sunday night. Military officials expect the roughly 2,000 troops to remain in the West Bank city of Jenin for up to 48 hours after launching the operation. Palestinian officials say at least eight people were killed and 50 were wounded in the attack, which was larger than any operation Israel has carried out this year.
Ukraine war: The lethal minefields holding up Kyiv's counter-offensive
"Of course, it slows down the movement of troops," said the commander of a nine-man sapper squad with the call sign Dill. He'd just finished a de-mining mission on the nearby frontlines to the east of the tiny, ruined village of Predtechyne, outside Bakhmut. He laid out an array of deactivated Russian mines on the ground beneath a tree, taking care to make sure he could not be spotted by Russian drones overhead.
Two Palestinians killed as Israel attacks West Bank city of Jenin
Israel's military has launched air raids on the occupied West Bank city of Jenin, dropping missiles from helicopters and killing at least two Palestinians as well as wounding 10 others, according to officials and witnesses. Residents said at least four Israeli air attacks hit buildings in Jenin early on Monday, sending smoke billowing up from the wreckage, and reported spotting a convoy of Israeli armoured vehicles moving towards the city's vast refugee camp. "There is bombing from the air and an invasion from the ground," Mahmoud al-Saadi, the director of the Palestinian Red Crescent in Jenin, told the AFP news agency. "Several houses and sites have been bombed…. The Palestinian health ministry said the raids killed at least two people and wounded 10, one of whom was in critical condition. The Israeli military said in a statement that it struck a "joint operations centre", which served as a command centre for the Jenin Brigades, a unit comprised of fighters from different Palestinian armed groups. The raids on Monday came after Israeli forces killed three gunmen near Jenin in the first drone assault on the West Bank since 2006. Al Jazeera's Nida Ibrahim, reporting from Ramallah in the occupied West Bank, said the Israeli military also announced the arrest of several "wanted Palestinians and the seizure of explosive devices". "Now, these are homemade Palestinian explosives that wounded eight Israeli soldiers during last month's Israeli raid on the Jenin refugee camp.
Perch a quadrotor on planes by the ceiling effect
Zou, Yuying, Li, Haotian, Ren, Yunfan, Xu, Wei, Li, Yihang, Cai, Yixi, Zhou, Shenji, Zhang, Fu
Perching is a promising solution for a small unmanned aerial vehicle (UAV) to save energy and extend operation time. This paper proposes a quadrotor that can perch on planar structures using the ceiling effect. Compared with the existing work, this perching method does not require any claws, hooks, or adhesive pads, leading to a simpler system design. This method does not limit the perching by surface angle or material either. The design of the quadrotor that only uses its propeller guards for surface contact is presented in this paper. We also discussed the automatic perching strategy including trajectory generation and power management. Experiments are conducted to verify that the approach is practical and the UAV can perch on planes with different angles. Energy consumption in the perching state is assessed, showing that more than 30% of power can be saved. Meanwhile, the quadrotor exhibits improved stability while perching compared to when it is hovering.
Ukrainian officials report drone strikes shot down over Kyiv
Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. Ukrainian officials reported a bombardment of drone strikes late Saturday into Sunday in the capital city of Kyiv. The Russian strikes were reportedly shot down before making contact, and the city was spared damage, according to official communications from the Kyiv military administration. Ukrainian officials reported three private homes were damaged by falling debris in two districts of the city.
Drone attacks hit Wagner base in Libya; no casualties reported
Libya's government denied reports it is responsible for drone attacks that hit an airbase in the east used by mercenaries of the Russian paramilitary group Wagner. The origin of the early Friday attack on the Al-Kharruba airbase, 150km (90 miles) southwest of Benghazi, was unclear but it caused no casualties. Army Chief of Staff General Mohamad al-Haddad denied the Tripoli-based authorities had anything to do with the raid. "None of our aircraft targeted any site in the east," al-Haddad said, according to the Libyan news website Addresslibya. "These reports are aimed at stoking a new war between Libyan brothers and involving Libya in a regional conflict."
Unscented Optimal Control for 3D Coverage Planning with an Autonomous UAV Agent
Papaioannou, Savvas, Kolios, Panayiotis, Theocharides, Theocharis, Panayiotou, Christos G., Polycarpou, Marios M.
We propose a novel probabilistically robust controller for the guidance of an unmanned aerial vehicle (UAV) in coverage planning missions, which can simultaneously optimize both the UAV's motion, and camera control inputs for the 3D coverage of a given object of interest. Specifically, the coverage planning problem is formulated in this work as an optimal control problem with logical constraints to enable the UAV agent to jointly: a) select a series of discrete camera field-of-view states which satisfy a set of coverage constraints, and b) optimize its motion control inputs according to a specified mission objective. We show how this hybrid optimal control problem can be solved with standard optimization tools by converting the logical expressions in the constraints into equality/inequality constraints involving only continuous variables. Finally, probabilistic robustness is achieved by integrating the unscented transformation to the proposed controller, thus enabling the design of robust open-loop coverage plans which take into account the future posterior distribution of the UAV's state inside the planning horizon.
Evaluation of the Benefits of Zero Velocity Update in Decentralized EKF-Based Cooperative Localization Algorithms for GNSS-Denied Multi-Robot Systems
Kilic, Cagri, Gutierrez, Eduardo, Gross, Jason N.
This paper proposes the cooperative use of zero velocity update (ZU) in a decentralized extended Kalman filter (DEKF) based localization algorithm for multi-robot systems. The filter utilizes inertial measurement unit (IMU), ultra-wideband (UWB), and odometry velocity measurements to improve the localization performance of the system in the presence of a GNSS-denied environment. The contribution of this work is to evaluate the benefits of using ZU in a DEKF-based localization algorithm. The algorithm is tested with real hardware in a video motion capture facility and a Robot Operating System (ROS) based simulation environment for unmanned ground vehicles (UGV). Both simulation and real-world experiments are performed to show the effectiveness of using ZU in one robot to reinstate the localization of other robots in a multi-robot system. Experimental results from GNSS-denied simulation and real-world environments show that using ZU with simple heuristics in the DEKF significantly improves the 3D localization accuracy.
Federated Multi-Agent Deep Reinforcement Learning for Dynamic and Flexible 3D Operation of 5G Multi-MAP Networks
Catté, Esteban, Sana, Mohamed, Maman, Mickael
This paper addresses the efficient management of Mobile Access Points (MAPs), which are Unmanned Aerial Vehicles (UAV), in 5G networks. We propose a two-level hierarchical architecture, which dynamically reconfigures the network while considering Integrated Access-Backhaul (IAB) constraints. The high-layer decision process determines the number of MAPs through consensus, and we develop a joint optimization process to account for co-dependence in network self-management. In the low-layer, MAPs manage their placement using a double-attention based Deep Reinforcement Learning (DRL) model that encourages cooperation without retraining. To improve generalization and reduce complexity, we propose a federated mechanism for training and sharing one placement model for every MAP in the low-layer. Additionally, we jointly optimize the placement and backhaul connectivity of MAPs using a multi-objective reward function, considering the impact of varying MAP placement on wireless backhaul connectivity.