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Drones, Volume 7, Issue 6

June 2023 - 69 articles

Cover Story: Due to the growing demand for food in our climate-changing world, the correct prediction of feed resources for animals may be of interest for the scientific community and agricultural managers. To achieve this, a novel approach to the estimation of the fresh biomass of forage crops is presented, based on the normalized difference vegetation index (NDVI) time series taken from a UAS platform and a multispectral camera on board. The second derivative applied to the NDVI time series determined the key points of the growing cycle, whereas the NDVI values themselves were integrated and multiplied by a standardized value of the normalized water productivity (WP*). The procedure is new, yet simple and easy to implement, and it was successfully validated in eight fields of different rainfed intercropping forages in Spain. View this paper
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Articles (69)

  • Feature Paper
  • Article
  • Open Access
11 Citations
7,046 Views
21 Pages

19 June 2023

Mini-drones can be used for a variety of tasks, ranging from weather monitoring to package delivery, search and rescue, and also recreation. In outdoor scenarios, they leverage Global Positioning Systems (GPS) and/or similar systems for localization...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,227 Views
16 Pages

STAR-RIS-UAV-Aided Coordinated Multipoint Cellular System for Multi-User Networks

  • Baihua Shi,
  • Yang Wang,
  • Danqi Li,
  • Wenlong Cai,
  • Jinyong Lin,
  • Shuo Zhang,
  • Weiping Shi,
  • Shihao Yan  and
  • Feng Shu

17 June 2023

Different from conventional reconfigurable intelligent surfaces (RIS), simultaneous transmitting and reflecting RIS (STAR-RIS) can reflect and transmit signals to the receiver. In this paper, to serve more ground users and increase deployment flexibi...

  • Article
  • Open Access
24 Citations
7,257 Views
30 Pages

Research on Object Detection and Recognition Method for UAV Aerial Images Based on Improved YOLOv5

  • Heng Zhang,
  • Faming Shao,
  • Xiaohui He,
  • Zihan Zhang,
  • Yonggen Cai and
  • Shaohua Bi

17 June 2023

In this paper, an object detection and recognition method based on improved YOLOv5 is proposed for application on unmanned aerial vehicle (UAV) aerial images. Firstly, we improved the traditional Gabor function to obtain Gabor convolutional kernels w...

  • Article
  • Open Access
2 Citations
2,348 Views
20 Pages

16 June 2023

In recent years, correlation filtering has been widely used in the field of UAV target tracking for its high efficiency and good robustness, even on a common CPU. However, the existing correlation filter-based tracking methods still have major proble...

  • Article
  • Open Access
16 Citations
5,645 Views
21 Pages

A Vision-Based Autonomous Landing Guidance Strategy for a Micro-UAV by the Modified Camera View

  • Lingxia Mu,
  • Qingliang Li,
  • Ban Wang,
  • Youmin Zhang,
  • Nan Feng,
  • Xianghong Xue and
  • Wenzhe Sun

16 June 2023

Autonomous landing is one of the key technologies for unmanned aerial vehicles (UAVs) which can improve task flexibility in various fields. In this paper, a vision-based autonomous landing strategy is proposed for a quadrotor micro-UAV based on a nov...

  • Feature Paper
  • Article
  • Open Access
7 Citations
5,436 Views
24 Pages

Systematically Improving the Efficiency of Grid-Based Coverage Path Planning Methodologies in Real-World UAVs’ Operations

  • Savvas D. Apostolidis,
  • Georgios Vougiatzis,
  • Athanasios Ch. Kapoutsis,
  • Savvas A. Chatzichristofis and
  • Elias B. Kosmatopoulos

15 June 2023

This work focuses on the efficiency improvement of grid-based Coverage Path Planning (CPP) methodologies in real-world applications with UAVs. While several sophisticated approaches are met in literature, grid-based methods are not commonly used in r...

  • Review
  • Open Access
272 Citations
47,991 Views
42 Pages

15 June 2023

In recent years, UAV remote sensing has gradually attracted the attention of scientific researchers and industry, due to its broad application prospects. It has been widely used in agriculture, forestry, mining, and other industries. UAVs can be flex...

  • Article
  • Open Access
18 Citations
4,935 Views
22 Pages

Analysis of Aerodynamic Characteristics of Propeller Systems Based on Martian Atmospheric Environment

  • Wangwang Zhang,
  • Bin Xu,
  • Haitao Zhang,
  • Changle Xiang,
  • Wei Fan and
  • Zhiran Zhao

15 June 2023

Compared to detection methods employed by Mars rovers and orbiters, the employment of Mars UAVs presents clear advantages. However, the unique atmospheric conditions on Mars pose significant challenges to the design and operation of such UAVs. One of...

  • Article
  • Open Access
10 Citations
3,919 Views
18 Pages

Quantifying Visual Pollution from Urban Air Mobility

  • Kilian Thomas and
  • Tobias A. Granberg

14 June 2023

Unmanned aerial vehicles (UAVs) can bring many benefits, particularly in emergency response and disaster management. However, they also induce negative effects, such as noise and visual pollution, risk, and integrity concerns. In this work, we study...

  • Article
  • Open Access
10 Citations
4,115 Views
19 Pages

Dynamic Capacity Management for Air Traffic Operations in High Density Constrained Urban Airspace

  • Niki Patrinopoulou,
  • Ioannis Daramouskas,
  • Calin Andrei Badea,
  • Andres Morfin Veytia,
  • Vaios Lappas,
  • Joost Ellerbroek,
  • Jacco Hoekstra and
  • Vassilios Kostopoulos

14 June 2023

Unmanned Aircraft Systems (UAS) Traffic Management (UTM) is an active research subject as its proposed applications are increasing. UTM aims to enable a variety of UAS operations, including package delivery, infrastructure inspection, and emergency m...

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Drones - ISSN 2504-446X