scholarly journals Identification of Marine Debris and Its Distribution Using Unmanned Aerial Vehicle (UAV) on the Cirebon Coastal Area, Indonesia

2021 ◽  
Vol 925 (1) ◽  
pp. 012038
Author(s):  
A D Yohanlis ◽  
M R Putri
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Coastal Area ◽  
Tidal Height ◽  
Marine Debris ◽  
Ground Sample ◽  
Factors Affecting ◽  
Cleaning Method ◽  
Maximum Water Level ◽  
Comprehensive Information ◽  
Aerial Vehicle

Abstract Marine debris can be a significant problem when it enters the ocean. One of the areas, which has a marine debris problem is Cirebon Coast. Such a problem occurs due to the high human population and activities in this particular coastal area. An effective cleaning method is required to prevent this problem. However, to determine the cleaning method, comprehensive information about the debris condition is required. Therefore, this study aims to identify the dominant types of marine debris and analyze the effect of tides on the characteristics and distribution of debris on the Cirebon Coast. This study carried out marine debris identification by orthophoto obtained from a DJI Phantom 4 Pro Unmanned Aerial Vehicle (UAV)/drone. The dominant types of marine debris on the Cirebon Coast are plastic and styrofoam. Based on the aerial imagery validation results, plastic and styrofoam larger than Ground Sample Distance (GSD) are easily detected. Visually, debris in Karang Anom more than in Rawa Urip. The change in tidal height can affect debris not visible on the orthophoto at the maximum water level. In addition, the tides can also move marine debris varying from 10 to 50 cm from its previous position. The debris area at Rawa Urip Beach when slack before flood tide (55.53 m2) is larger than the area when slack before ebb tide (52.71 m2). The debris area at Karang Anom Beach at low tide (129.89 m2) is larger than when slack before ebb tide (75.79 m2). This study revelaed that the factors affecting debris area on the Cirebon Coast comprise tidal height, seawater visibility, and the beach structure (slope and coast components).

scholarly journals Topographic data acquisition in tsunami-prone coastal area using Unmanned Aerial Vehicle (UAV)

2018 ◽  
Vol 148 ◽  
pp. 012004 ◽  
Author(s):  
M A Marfai ◽  
Sunarto ◽  
N Khakim ◽  
A Cahyadi ◽  
F S C Rosaji ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Unmanned Aerial Vehicle ◽  
Coastal Area ◽  
Topographic Data ◽  
Aerial Vehicle

Assessment of Photogrammetric Micro Fixed-Wing Unmanned Aerial Vehicle (UAV) System For Image Acquisition of Coastal Area

2014 ◽  
Vol 71 (5) ◽  
Author(s):  
Norhadija Darwin ◽  
Anuar Ahmad ◽  
Zulkarnaini Mat Amin ◽  
Othman Zainon
Keyword(s):  
High Resolution ◽  
Unmanned Aerial Vehicle ◽  
Coastal Area ◽  
Image Acquisition ◽  
Digital Camera ◽  
Image Resolution ◽  
Aerial Images ◽  
Conjugate Points ◽  
Coastal Mapping ◽  
Aerial Vehicle

Fast image acquisition is the most important part for societal impact of a developing country. This paper aims to demonstrate the potential use of micro fixed wing unmanned aerial vehicle (UAV) system attached with high resolution digital camera for coastal mapping. In this study, six strips of aerial images of coastal area was captured using a high resolution compact digital camera known as Canon Power Shot SX230 HS and it has 12 megapixel image resolution. From the aerial images, photogrammetric image processing method is completed to produce mapping outputs such a digital elevation model (DEM) and orthophoto. For accuracy assessment, the coordinates of the selected points in the 3D of stereomodel were compared to the conjugate points observed using GPS and the root mean square error (RMSE) is computed. From this study, the results showed that the achievable RMSE are ± 0.018m, ± 0.013m and ± 0.034m for coordinates X, Y and Z respectively. It will anticipate that the UAV will be used for coastal survey and improve current method of producing with low cost, fast and good accuracy. Finally, the UAV has shown great potential to be used for coastal mapping that require accurate results or products using high resolution camera. 

APLIKASI UAV (UNMANNED AERIAL VEHICLE) UNTUK MENDUKUNG PEMANTAUAN TATA RUANG

2018 ◽  
Vol 2 ◽  
pp. 511
Author(s):  
Azmiyatul 'Arifati
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Ground Sample ◽  
Aerial Vehicle ◽  
Sample Distance

<p>Pada beberapa tahun terakhir, pemanfaatan foto udara dari rekaman sensor yang dibawa oleh <em>Unmanned Aerial Vehicle</em> (UAV) berkembang sangat pesat. Hasil foto udara melalui UAV banyak dimanfaatan untuk pemetaan yang membutuhkan tingkat detail yang tinggi karena memiliki tingkat <em>Ground Sample Distance</em> hingga satuan sentimeter. Pekerjaan pemetaan skala besar biasa dilakukan menggunakan sumber data dari metode ekstraterestris yaitu citra satelit resolusi tinggi. Semula, metode fotogrameris dihindari karena memerlukan biaya yang relatif mahal, waktu yang relatif lama, serta SDM yang banyak dalam pengoperasiannya. Namun, saat ini UAV dengan berbagai kelebihannya dapat diperhitungkan sebagai sumber data pemetaan tata ruang. Penelitian ini bertujuan untuk mengkaji kapasitas UAV sebagai sumber alternatif dalam pemetaan tata ruang, terutama dalam kegiatan pemantauan pemanfaatan ruang. Studi literatur dengan teknik mengumpulkan (<em>summarize</em>) dan meringkas (<em>synthesize</em>) terhadap berbagai penelitian, laporan teknis, dan sumber <em>online </em>dilakukan untuk menggali informasi terkait aplikasi UAV, khususnya di bidang tata ruang. Kemudian dihasilkan kesesuaian UAV untuk pemetaan tata ruang beserta analisisnya. Secara keseluruhan, akurasi yang didapat dari hasil UAV telah memenuhi standar foto udara yang diperlukan untuk <em>monitoring</em> tata ruang, baik akurasi horizontal maupun vertikal, serta ketelitian DEM.</p><strong>Kata kunci</strong>: <em>UAV, pemetaan skala besar, pemantauan tata ruang.</em>

scholarly journals Stability Parameter Range of a Tethered Unmanned Aerial Vehicle

2022 ◽  
Vol 2022 ◽  
pp. 1-13
Author(s):  
Wei He ◽  
Suxia Zhang
Keyword(s):  
Elastic Modulus ◽  
Unmanned Aerial Vehicle ◽  
Wind Field ◽  
Environmental Parameters ◽  
Stability Parameter ◽  
Parameter Range ◽  
Vibration Velocity ◽  
Factors Affecting ◽  
Aerial Vehicle ◽  
The Stability

In this study, the stability parameter range of a tethered quadrotor unmanned aerial vehicle (UAV) under the action of the transient wind field is numerically analyzed, which can provide a theoretical basis for the design and application of such systems. Three factors affecting the stability of tethered UAV system are determined, namely, cable tension, cable elongation, and UAV vibration velocity, and the corresponding judgment criteria are obtained. Specifically, the priority of the three criteria sequentially decreases. According to these criteria, the stability parameter range of the tethered UAV is examined under the cable parameters such as length, diameter, and elastic modulus and the environmental parameters such as the amplitude and period of the wind field. The results show that for designing the tethered UAV structure, by reducing the length of the tethered cable and increasing its diameter and elastic modulus, the working stability of tethered UAV system can be improved.

scholarly journals ANALYSIS OF FACTORS AFFECTING THE COMPOSITION OF THE CONTROLSYSTEM OF THE UNMANNED AERIAL VEHICLE

2020 ◽  
Vol 4 (4(73)) ◽  
pp. 65-70
Author(s):  
V.A. Smirnov
Keyword(s):  
Control System ◽  
Unmanned Aerial Vehicle ◽  
Factors Affecting ◽  
Factors Influencing ◽  
Aerial Vehicle ◽  
The Given

In this article the factors influencing the composition of an unmanned aerial vehicle (UAV) control system are considered. The given examples of management, are traditional ways of realization of a control system of the UAV orientation and are used in manysystems. Thus, the control system allows receiving and executing commands of the controller and providing stabilization of the aircraft for the specified parameters of speed, direction and altitude.

scholarly journals Analysis of factors affecting the speed of probabilistic target search using unmanned aerial vehicles

2019 ◽  
Vol 15 (9) ◽  
pp. 155014771987761
Author(s):  
Il-Kyu Ha ◽  
You-Ze Cho
Keyword(s):  
False Alarm ◽  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
Search Performance ◽  
Data Set ◽  
Target Search ◽  
Factors Affecting ◽  
Aerial Vehicles ◽  
Detection Probabilities ◽  
Aerial Vehicle

When searching for targets using unmanned aerial vehicles, speed is important for many applications such as the discovery of patients in a medical emergency. The speed of operation of actual unmanned aerial vehicles is strongly related to the performance of the camera sensor used for target recognition, search altitude, and the search algorithm employed by the unmanned aerial vehicle. In this study, the major factors affecting the speed of a probabilistic unmanned aerial vehicle target search are analyzed. In particular, simulations are performed to analyze the influence of the search altitude, sensor false alarm rate, and sensor missed detection rate on the required travel distance and the time required for a search. Furthermore, the search performance of an unmanned aerial vehicle is analyzed by varying the search altitude with fixed false alarm and missed detection probabilities. The simulation results show that the search performance is significantly affected by changes in the false alarm and missed detection probabilities of the sensor, and it confirms that the effect of the missed detection probability is greater than that of the false alarm probability. The second simulation proves that the altitude of an unmanned aerial vehicle is a very important factor for the speed of a target search. In particular, the result shows that, for a real data set, the search distance and time at 10 and 5 m are about 2.8 times and 14.3 times larger, respectively, than those at 20 m.

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