scholarly journals Volume computation of quarries in Vietnam based on Unmanned Aerial Vehicle (UAV) data

2020 ◽  
Vol 61 (1) ◽  
pp. 21-30 ◽  
Author(s):  
Le Van Canh ◽  
Cao Xuan Cuong ◽  
Dinh Tien ◽  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Volume Computation ◽  
Aerial Vehicle ◽  
The Difference ◽  
Mine Surveying ◽  
Volumetric Measurements

The main objective of this study is to evaluate the accuracy of volumetric measurements carried out with the unmanned aerial vehicle (UAV) data in quarries in Vietnam. To accomplish this goal, GNSS/RTK and UAV technologies were employed to collect data at the same time in the Long Son quarry in Thanh Hoa. The data was used to establish DEMs, which were used to calculate the reserve of the quarry. The results of calculating the mine reserves showed that the difference between the two methods was 0.07%; Also, the difference in the height between the two average models was 3.5 cm. This result satisfies the requirements in the Vietnamese standards for mine surveying.

scholarly journals СИСТЕМА РАСПОЗНАВАНИЯ СТЕГАНОГРАФИЧЕСКИ-ПРЕОБРАЗОВАННЫХ ГОЛОСОВЫХ КОМАНД УПРАВЛЕНИЯ БПЛА

2018 ◽  
pp. 20-28
Author(s):  
Александр Юрьевич Лавриненко ◽  
Юрий Анатольевич Кочергин ◽  
Георгий Филимонович Конахович
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Vehicle Control ◽  
Mel Frequency Cepstral Coefficients ◽  
Control Information ◽  
Cepstral Analysis ◽  
Voice Control ◽  
Aerial Vehicle ◽  
Cepstral Coefficients ◽  
The Difference ◽  
The Mathematical Model

It is created the system of recognition the steganographic-transformed voice commands of unmanned aerial vehicle control based on a cepstral analysis. It provides effective recognition and hidden commands transmission of to the board of an unmanned aerial vehicle, by converting voice control commands into a kind of steganographic characteristics vector, which implies the concealment of voice control information of an unmanned aerial vehicle. The mathematical model of the algorithm for calculating the mel-frequency cepstral coefficients and the recognition classifier of voice control commands for the solution of the problem of semantic identification and securing the control information of the unmanned aerial vehicle in the communication channel is synthesized. A software package has been developed that includes tools for compiling the base of reference voice images of subjects of management for training and testing the system for recognizing steganographic-transformed voice commands of the unmanned aerial vehicle control based on the cepstral analysis and computer models of the proposed methods and algorithms for recognition voice control commands in the MATLAB environment. The expediency of applying the proposed system for recognizing steganographic-transformed voice commands of the unmanned aerial vehicle control based on a cepstral analysis is substantiated and experimentally proved. An algorithm is presented for calculating the mel-frequency cepstral coefficients that appear in the role of the main features of recognition and the result of the steganographic transformation of speech, where for the evaluation of automatic recognition of voice commands using the results of classifier constructed by the criterion of minimum distance in the role which acts as the variance of the difference of the expectation of a mel-frequency cepstral coefficients. The obtained results of the experimental research allow to draw a conclusion about the expediency of further practical application of the developed system of recognition the steganographic-transformed voice commands of the unmanned aerial vehicle control based on the cepstral analysis

TRANSMITTING GPS AS TEXT FORM THROUGH WIRELESS ON DRONE 2.0

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Aris Pujud Kurniawan ◽  
Giva Andriana Mutiara ◽  
Gita Indah Hapsari
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Global Positioning System ◽  
Conversion Process ◽  
Data Conversion ◽  
Gps Data ◽  
Global Positioning ◽  
Aerial Vehicle ◽  
The Difference ◽  
Gps System ◽  
Ar Drone

AR Drone 2.0 is a miniature unmanned aerial vehicle used in the field of research. AR Drone 2.0 has a camera and IMU sensors, so it can be used to get visual data from air which hardly done by human. Unmanned aerial vehicle requires GPS (Global Positioning System) so that the pilot can control it remotely as well as to support automatic fly without pilot. While GPS data are supported by AR Drone 2.0 it still needs data conversion process due to the difference in data protocol which is used between the Drone and the GPS. This conversion process required processor or controller to process the data. Integration of GPS with AR Drone using controller also allows drone to run for automatic control. In addition, GPS data will also be sent information of latitude and longitude to computer so that the pilot can determine the current position when AR Drone is flying. The GPS system used for this design can be developed further in the future because it is open source.  

scholarly journals Above Ground Biomass Estimation of Syzygium aromaticum using structure from motion (SfM) derived from Unmanned Aerial Vehicle in Paninggahan Agroforest Area, West Sumatra

2021 ◽  
Vol 9 (1) ◽  
pp. 39
Author(s):  
Try Surya Harapan ◽  
Ahsanul Husna ◽  
Thoriq Alfath Febriamansyah ◽  
Mahdi Mutashim ◽  
Andri Saputra ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Aerial Image ◽  
Biomass Estimation ◽  
Syzygium Aromaticum ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
West Sumatra ◽  
Aerial Vehicle ◽  
The Difference ◽  
The Individual

Above ground biomass (AGB) is all living organic matters above the soil including stem, seed and leaves. This study aimed to estimate the individual clove (Syzygium aromaticum) and it’s above ground biomass using Unmanned Aerial Vehicle in the Agroforestry area in Paninggahan, West Sumatra. This study used a photogrammetry method to calculate trees and estimated the AGB. We detected 257 numbers of trees based on aerial image analysis and observed 270 after we validated on ground check in the field. The result was slightly different between estimated AGB from UAV and observed AGB from our ground validation. The estimated AGB was 5.9 ton/ Ha where the surveyed AGB was 5.6 ton/Ha. The difference between estimated AGB and observed AGB was 0.3 ton/Ha.

scholarly journals Droplet Deposition and Control of Planthoppers of Different Nozzles in Two-Stage Rice with a Quadrotor Unmanned Aerial Vehicle

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 303
Author(s):  
Pengchao Chen ◽  
Yubin Lan ◽  
Xiaoyu Huang ◽  
Haixia Qi ◽  
Guobin Wang ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Spray Drift ◽  
Droplet Deposition ◽  
Control Effect ◽  
Flowering Stage ◽  
Rice Planthoppers ◽  
Aerial Vehicle ◽  
The Difference ◽  
Carrier Volume ◽  
And Control

Previous studies have confirmed that choosing nozzles that produce coarser droplets could reduce the risk of pesticide spray drift, but this conclusion is based on a large volume of application, and it is easy to ignore how this impacts the control effect. The difference from the conventional spray is that the carrier volume of Unmanned Aerial Vehicle (UAV) is very limited. Little was known about how to choose suitable nozzles with UAV’s limited volume to ensure appropriate pest control. Droplet deposition with the addition of adjuvant and the LU110-010, LU110-015, and LU110-020 nozzles and control of planthoppers within nozzles treatments were studied by a quadrotor UAV in rice (Tillering and Flowering stages). Allura Red (10 g/L) was used as a tracer and Kromekote cards were used to collect droplet deposits. The results indicate that the density of the droplets covered by the LU110-01 nozzle is well above other treatments, while the differences in droplet deposition and coverage are not significant. The deposition and coverage were improved with the addition of adjuvant, especially in LU110-01 nozzles’ treatment. The control effects of rice planthoppers treated by LU110-01 nozzle were 89.4% and 90.8% respectively, which were much higher than 67.6% and 58.5% of LU110-020 nozzle at 7 days in the Tillering and Flowering stage. The results suggest that selecting a nozzle with a small atomizing particle size for UAV could improve the control effect of planthoppers.

scholarly journals Method of an unmanned aerial vehicle composition route in space

2021 ◽  
Vol 5 (4) ◽  
pp. 26-33
Author(s):  
Denys Voloshyn ◽  
Veronika Brechko ◽  
Serhii Semenov
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Spatial Location ◽  
Starting Point ◽  
Aerial Vehicle ◽  
The Difference ◽  
Extended Graph ◽  
Three Dimensional Space ◽  
Vehicle Routes

The article is devoted to the development of a method of composition of the route of an unmanned aerial vehicle in three-dimensional space. The main difference of the presented method is the complex consideration of the features of the environment, which reflects the possible obstacles (active or passive) and other limitations of the problem when composing the route of the unmanned aerial vehicle in three-dimensional space. This allowed to increase the safety of the task in autonomous flight conditions. The article analyzes the main approaches to the composition of unmanned aerial vehicle routes in space. The conclusion about the shortcomings of the two-dimensional representation is made. The method presents four stages of the task. This is the stage of modeling the environment that reflects possible obstacles (active or passive) and other limitations of the task. Stage of construction of an extended graph of unmanned aerial vehicle routes in space. The difference of this stage is the adaptive consideration of the spatial location of active obstacles in space. The next stage is the route search stage, which connects the starting point with the end and bypasses all obstacles and allows you to build a starting route in the form of a broken line, which is formed by a sequence of waypoints, and connects the starting point with the end, bypassing obstacles. The last is the stage of obtaining the final result, which is provided by smoothing the obtained broken line. In this part of the composition method, to solve the problem of smoothing the trajectory of the unmanned aerial vehicle in space on the selected route, the expediency of using the method of non-uniform cubic B-spline is proved. With the help of this method the task of selection and optimization of the smoothing parameter is set and solved.

Study on Fault Diagnosis of Planetary Gearbox in Unmanned Aerial Vehicle Using Multi sensor Data

2020 ◽  
Vol 20 (4) ◽  
pp. 332-342
Author(s):  
Hyung Jun Park ◽  
Seong Hee Cho ◽  
Kyung-Hwan Jang ◽  
Jin-Woon Seol ◽  
Byung-Gi Kwon ◽  
...  
Keyword(s):  
Fault Diagnosis ◽  
Unmanned Aerial Vehicle ◽  
Sensor Data ◽  
Planetary Gearbox ◽  
Aerial Vehicle

Results of Spatial Structure of Atmosphere Radiation in a Spectral Range (1.5–2) µm Research

2018 ◽  
pp. 7-13
Author(s):  
Anton M. Mishchenko ◽  
Sergei S. Rachkovsky ◽  
Vladimir A. Smolin ◽  
Igor V . Yakimenko
Keyword(s):  
Spatial Structure ◽  
Unmanned Aerial Vehicle ◽  
Wavelength Range ◽  
Spectral Range ◽  
Near Ir ◽  
Optoelectronic Systems ◽  
Aerial Vehicle

Results of experimental studying radiation spatial structure of atmosphere background nonuniformities and of an unmanned aerial vehicle being the detection object are presented. The question on a possibility of its detection using optoelectronic systems against the background of a cloudy field in the near IR wavelength range is also considered.

Positioning the Angle of Attack Sensor on an Unmanned Aerial Vehicle Wing

2016 ◽  
Vol 3 (1) ◽  
pp. 25-33
Author(s):  
Amir Birjandi ◽  
◽  
Valentin Guerry ◽  
Eric Bibeau ◽  
Hamidreza Bolandhemmat ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Angle Of Attack ◽  
Aerial Vehicle
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