Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

168
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
168
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

118
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
118
Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

271
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
271
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

88
The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
88
Topographic Surveying and Contours01:29

Topographic Surveying and Contours

243
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
243
Methods of Obtaining Topography01:25

Methods of Obtaining Topography

111
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
111

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A Quantitative Electrostatic Potential Descriptor Enables Deep Learning-Accelerated Discovery of High-Performance Lithium-Ion Battery Electrolytes.

Angewandte Chemie (International ed. in English)·2026
Same author

Endogenous peptide derived from c-Cbl-associated protein counteracts its inhibitory effect on enteric neural crest cell colonization in Hirschsprung disease.

The Journal of neuroscience : the official journal of the Society for Neuroscience·2026
Same author

Towards a unified principal indicator system for global water quality assessment.

Water research·2026
Same author

Crab Shell Inspired Chitin/β-Tricalcium Phosphate Screws as Orthopedic Implants.

Biomacromolecules·2026
Same author

Mako robot-assisted unicompartmental knee arthroplasty mitigates the impact of surgeon handedness.

Journal of robotic surgery·2026
Same author

Baseline Tumor Proliferation and Ki-67 Are Associated With Pathological Response to Neoadjuvant Chemoimmunotherapy in Non-Small Cell Lung Cancer.

Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc·2026

Related Experiment Video

Updated: Sep 8, 2025

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation
08:47

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation

Published on: February 9, 2024

1.6K

Autonomous UAVs landing site selection from point cloud in unknown environments.

Linjie Yang1, Chenglong Wang1, Luping Wang1

  • 1School of Electronics and Communication Engineering, Sun Yat-sen University, Guangzhou 510006, China.

ISA Transactions
|June 13, 2022
PubMed
Summary

This study introduces a new framework for autonomous safe landing of unmanned aerial vehicles (UAVs) in unknown environments. The method uses point cloud data for robust site selection, ensuring safer landings even in challenging conditions.

Keywords:
Coarse-to-fine mannerLanding optimal modelLanding site selectionMulti-stage processTerrain evaluationUAVs

More Related Videos

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

155
Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy
07:13

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Published on: February 25, 2021

3.9K

Related Experiment Videos

Last Updated: Sep 8, 2025

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation
08:47

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation

Published on: February 9, 2024

1.6K
Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

155
Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy
07:13

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Published on: February 25, 2021

3.9K

Area of Science:

  • Robotics and Autonomous Systems
  • Computer Vision
  • Aerospace Engineering

Background:

  • Autonomous safe landing of Unmanned Aerial Vehicles (UAVs) in unknown environments is critical but challenging due to limited prior scene information.
  • Existing methods often struggle with terrain uncertainty and system complexity, limiting their effectiveness.
  • Robust navigation and landing capabilities are essential for UAVs operating in unpredictable scenarios.

Purpose of the Study:

  • To present a novel, complete, and modular framework for autonomous safe landing of UAVs in unknown environments.
  • To develop a coarse-to-fine approach leveraging point cloud data for enhanced landing site selection.
  • To ensure reliable and safe UAV operations across diverse conditions, including emergencies.

Main Methods:

  • A composite preprocessing scheme for point cloud data, including noise filtering, 3D Octo-map generation, and path planning.
  • A multi-stage coarse landing site selection process on a grid-map to balance accuracy and real-time performance.
  • Fine-grained 3D terrain validation incorporating multiple safety factors and a landing optimal model fusing terrain, fuel, and secondary validation.

Main Results:

  • The proposed framework successfully identified safe landing sites for UAVs in various real-world and unknown environments.
  • Experimental validation demonstrated the robustness of the method in selecting landing locations.
  • The system's performance was further evaluated under normal, emergency, and rescue scenarios, confirming its adaptability.

Conclusions:

  • The developed framework provides a robust solution for autonomous safe landing of UAVs in challenging, unknown environments.
  • The coarse-to-fine point cloud processing approach effectively addresses terrain uncertainty and system complexity.
  • The modular design and comprehensive validation ensure reliable UAV landings across diverse operational requirements.