scholarly journals Unmanned aerial vehicle integrated real time kinematic in infrared inspection of photovoltaic panels

Measurement ◽  
2022 ◽  
Vol 188 ◽  
pp. 110536
Author(s):  
Isaac Segovia Ramírez ◽  
Jesús Rafael Parra Chaparro ◽  
Fausto Pedro García Márquez
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Photovoltaic Panels ◽  
Real Time Kinematic ◽  
Aerial Vehicle

scholarly journals Pemanfaatan Metode Fotogrametri untuk Pengukuran Garis Pantai dan Identifikasi Objek-Objek Tematik dengan Menggunakan Wahana Uav (Unmanned Aerial Vehicle) (Studi Kasus Pengukuran Garis Pantai di Pangkalan TNI AL Pondok Dayung

2020 ◽  
Vol 5 (1) ◽  
pp. 71-84
Author(s):  
Adhyta Harfan ◽  
Dipo Yudhatama ◽  
Imam Bachrodin
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Control Point ◽  
Ground Control ◽  
Ground Control Point ◽  
Real Time Kinematic ◽  
Aerial Vehicle

Metode Fotogrametri telah banyak digunakan dalam survei dan pemetaan. Seiring dengan kemajuan ilmu pengetahuan dan teknologi, metode fotogrametri saat ini berbasiskan pesawat tanpa awak atau yang lebih dikenal dengan UAV (Unmanned Aerial Vehicle). Kelebihan metode fotogrametri berbasiskan UAV untuk pengukuran garis pantai adalah memiliki resolusi spasial yang sangat tinggi dan dapat menjagkau daerah-daerah yang sulit dan berbahaya. Di samping itu juga dapat memberikan data foto udara terkini dengan sekala detail. Dalam penelitian ini membandingkan ketelitian horisontal antara hasil pengukuran garis pantai menggunakan metode fotogrametri berbasiskan UAV secara rektifikasi dengan GCP (Ground Control Point) maupun secara PPK (Post Processed Kinematic) dengan pengukuran garis pantai metode GNSS RTK (Real Time Kinematic). Hasil perhitungan ketelitian horisontal mengacu pada standar publikasi IHO S-44 tentang pengukuran garis pantai. Pemotretan dilakukan dengan ketinggian terbang 180 m, dengan tampalan depan dan samping 80%. Hasil perhitungan ketelitian horisontal foto udara terektifikasi 5 GCP, foto udara PPK dan foto udara PPK terektifikasi 1 GCP terhadap pengukuran garis pantai dengan metode GNSS RTK diperoleh nilai standar deviasi (σ) dan 95% selang kepercayaan (CI95%) masing-masing sebagai berikut: σ5gcp=10,989 cm dengan CI95% 16.8 cm < μ < 21.2 cm , σppk=26,066 cm dengan CI95% 26.5 cm < μ < 37 cm dan σppk1gcp=10,378 cm dengan CI95% 15.6 cm < μ < 19.8 cm. Kemudian terdapat 10 objek tematik berdasarkan Peta Laut Nomor 1 yang dapat diinterpretasi pada hasil orthomosaic foto udara.

scholarly journals Nghiên cứu chế độ bay UAV trong khảo sát địa hình công trình dạng tuyến - ứng dụng cho đoạn đường đê Xuân Quan, Hà Nội

2021 ◽  
Vol 15 (7V) ◽  
pp. 131-142
Author(s):  
Lương Ngọc Dũng ◽  
Trần Đình Trọng ◽  
Vũ Đình Chiều ◽  
Bùi Duy Quỳnh ◽  
Hà Thị Hằng ◽  
...  
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Global Navigation Satellite System ◽  
Satellite System ◽  
Viet Nam ◽  
Navigation Satellite ◽  
Real Time Kinematic ◽  
Aerial Vehicle ◽  
Global Navigation ◽  
Global Navigation Satellite

Giải pháp thành lập bản đồ địa hình bằng thiết bị bay không người lái (Unmanned Aerial Vehicle - UAV) đang ngày càng phổ biến ở Việt Nam. Đã có nhiều nghiên cứu chứng minh thiết bị UAV đảm bảo độ chính xác thành lập bản đồ địa hình tỷ lệ lớn, tuy nhiên chưa có các giải pháp cụ thể cho công trình đặc thù dạng tuyến. Mục tiêu nghiên cứu của bài báo là các chế độ bay phù hợp cho công tác khảo sát địa hình các công trình dạng tuyến. Đối tượng thực nghiệm, một đoạn đường bộ thuộc địa phận đê Xuân Quan, Hà Nội, được khảo sát bằng thiết bị UAV Phantom 4 Pro với các chế độ khác nhau trên các phần mềm điều khiển bay có sẵn. Kết quả thực nghiệm các chế độ bay được so sánh với kết quả đo định vị động thời gian thực (Global Navigation Satellite System/Real Time Kinematic - GNSS/RTK) để đánh giá độ chính xác. Nghiên cứu chỉ ra kiểu bay dải phủ trùm, đối với công trình dạng tuyến, thích hợp ở các giai đoạn thiết kế kỹ thuật và thiết kế thi công. Trong khi kiểu bay 2 dải đơn phù hợp và hiệu quả cho các quá trình quy hoạch, đánh giá sơ bộ công trình dạng tuyến.

scholarly journals PENGARUH SEBARAN DATA GROUND CONTROL POINT (GCP) DALAM PENGOLAHAN DATA FOTO UDARA PADA AREA IN-PIT MAPPING MENGGUNAKAN DRONE QUADCOPTER DJI PHANTOM 4 RTK BERBASIS BASE GPS METODE REAL TIME KINEMATIC (RTK)

2020 ◽  
Vol 1 (1) ◽  
pp. 191-200
Author(s):  
Ryan Nugraha ◽  
Sigit Putrasakti
Keyword(s):  
Root Mean Square Error ◽  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Control Point ◽  
Ground Control ◽  
Horizontal Position ◽  
Mean Square ◽  
Ground Control Point ◽  
Real Time Kinematic ◽  
Aerial Vehicle

ABSTRAKTeknik pengambilan foto udara yang saat ini sedang berkembang, tidak bisa dipungkiri lagi bahwa teknologi Unmanned Aerial Vehicle (UAV), khususnya drone merupakan salah satu teknologi yang sangat efektif dan efisien dalam melakukan kegiatan mapping (pemetaan). Kegiatan mapping menggunakan drone ini juga tidak luput dari industri pertambangan, khususnya tambang batu bara yang saat ini mulai popular menggunakan salah satu teknologi yang modern ini. Salah satu jenis UAV yang digunakan PT Arutmin Indonesia adalah drone quadcotper DJI Phantom 4 RTK yang berbasis base GPS metode Real Time Kinematic (RTK). Kegiatan mapping menggunakan drone diperlukan beberapa titik ikat atau kontrol di permukaan tanah yang disebar di area mapping yang dikenal dengan Ground Control Point (GCP). GCP berfungsi sebagai titik ikat atau kontrol di permukaan tanah. Sebaiknya GCP disebar merata di permukaan tanah area mapping yang areanya bebas dari obstacles, dan tidak mengganggu kegiatan penambangan agar hasil dari pengolahan data diharapkan menghasilkan data orthophoto dan kontur topografi yang presisi dan akurat. Kegiatan mapping yang dilakukan PT Arutmin Indonesia ini dilakukan di area in pit dump dengan sebaran enam data GCP yang disebar di ujung-ujung dan tengah batasan area mapping. GCP yang tidak di sebar merata di area mapping akan menghasilkan data orthophoto dan kontur topografi yang tidak presisi dan akurat. Ini disebabkan adanya area mapping yang tidak terikat/terkontrol oleh GCP. Area mapping yang tidak tercover GCP, dominan orthophoto yang dihasilkan tidak sesuai dengan aktual kondisi in pit dump. Orthophoto in pit dump ini, keadaan bench dump akan terlihat tidak lurus atau terpisah atau tidak menyambung karena posisi horizontal yang dihasilkan tidak presisi dan akurat. Begitu juga dengan data topografi, apabila area mapping tidak tercover GCP, akan menimbulkan variance +/- 5-10 m pada posisi horizontal (easting dan northing) dan 3-5 m pada posisi vertical (elevation). Dengan demikian data GCP yang disebar merata di area mapping merupakan salah satu parameter untuk menghasilkan data orthophoto dan kontur yang presisi dan akurat. GCP yang disebar merata di area mapping akan memberikan pengaruh terhadap ketelitian rektifikasi yang ditunjukkan melalui nilai Root Mean Square Error (RMSE) ketelitian jarak dan posisi (koordinat). Kata Kunci: GCP, mapping, in pit dump, rektifikasi   ABSTRACT The technique of taking aerial photographs is currently developing, it is undeniable that the technology of Unmanned Aerial Vehicle (UAV), especially drones, is one of the technologies that is very effective and efficient in conducting mapping activities. Mapping activities using drones are also not spared from the mining industry, especially coal mining which is currently gaining popularity using one of these modern technologies. One type of UAV used by PT Arutmin Indonesia is the DJI Phantom 4 RTK quadcotper drone based on the GPS Real Time Kinematic (RTK) method. Mapping activities using drones require a number of grounding points or controls that are spread out in a mapping area known as a Ground Control Point (GCP). GC Work as a bonding point or control at ground level. GCP should be distributed evenly on unobstructed mapping surface, and there is no mining activity so that the results of data processing are expected to produce precise and accurate orthophoto and topographic contour data. The mapping activity carried out by PT Arutmin Indonesia was carried out in an area in the pit dump with the distribution of six GCP data distributed at the edges and the mapping of the middle area. GCP that is not spread evenly in the mapping area will produce orthophoto data and topographic contours that are not precise and accurate. This represents the existence of an area mapping that is not approved / controlled by GCP. Mapping the area that is not covered by GCP, the dominant orthophoto produced is not in accordance with the actual conditions in the pit dump. Orthophoto in this pit dump, the state of the dump bench will look not straight or separate or not connect because the resulting horizontal position is not precise and accurate. Likewise with topographic data, mapping the rejected area is not covered by GCP, will cause variance +/- 5-10 m in the horizontal position (east and north) and 3-5 m vertical position (elevation). Thus GCP data distributed evenly in the mapping area is one of the parameters to produce precise and accurate orthophoto and contour data. GCP that is spread evenly in the mapping area will give effect to the accuracy of rectification studied through the value of Root Mean Square Error (RMSE) accuracy of distance and position (coordinates). Keywords: GCP, mapping, in pit dump, rectification

scholarly journals A Test on the Potential of a Low Cost Unmanned Aerial Vehicle RTK/PPK Solution for Precision Positioning

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3882
Author(s):  
Nicola Angelo Famiglietti ◽  
Gianpaolo Cecere ◽  
Carmine Grasso ◽  
Antonino Memmolo ◽  
Annamaria Vicari
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Low Cost ◽  
Global Navigation Satellite Systems ◽  
Precision Positioning ◽  
Satellite Systems ◽  
Real Time Kinematic ◽  
Alloy Base ◽  
Aerial Vehicle ◽  
Global Navigation Satellite

This paper investigated the achievable accuracy from a low-cost RTK (Real Time Kinematic)/PPK (Post Processing Kinematic) GNSS (Global Navigation Satellite Systems) system installed on board a UAV (Unmanned Aerial Vehicle), employing three different types of GNSS Bases (Alloy, RS2 and RING) working in PPK mode. To evaluate the quality of the results, a set of seven GCPs (Ground Control Points) measured by means of the NRTK (Network Real Time Kinematic) technique was used. The outcomes show a RMSE (Root Mean Square Error) of 0.0189 m for an ALLOY Base, 0.0194 m for an RS2 Base and 0.0511 m for RING Base, respectively, on the vertical value of DEMs (Digital Elevation Models) obtained by a photogrammetric process. This indicates that, when changing the Base for the PPK, the solutions are different, but they can still be considered adequate for precision positioning with UAVs, especially when GCPs could be used with some difficulty. Therefore, the integration of a RTK/PPK GNSS module on a UAV allows the reconstruction of a highly detailed and precise DEM without using GCPs and provides the possibility to carry out surveys in inaccessible areas.

scholarly journals Mapping site-level microtopography with Real- Time Kinematic Global Navigation Satellite Systems (RTK GNSS) and Unmanned Aerial Vehicle Photogrammetry (UAVP)

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Christopher H. Roosevelt
Keyword(s):  
Data Quality ◽  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Navigation Satellite ◽  
Archaeological Survey ◽  
Western Turkey ◽  
Real Time Kinematic ◽  
Aerial Vehicle ◽  
Global Navigation ◽  
Global Navigation Satellite

AbstractMicrotopographic mapping has a long history in archaeology and has gained prominence recently owing to the proliferation of digital technologies. With such proliferation, it becomes necessary to compare and contrast different approaches based on a common set of criteria. This article compares the implementation and efficiency of two methods of mapping microtopography – ground-based Real-Time Kinematic Global Navigation Satellite System (RTK GNSS) and Unmanned Aerial Vehicle Photogrammetry (UAVP) survey – assessing the pros and cons of each, including those related to data quality. ‘Off-the-shelf’ solutions for methods were used to create the comparative dataset of microtopographic maps of six Middle and Late Bronze Age sites over the course of four seasons between 2007 and 2013 in the study area of the Central Lydia Archaeological Survey in western Turkey. Comparison of results demonstrate that the methods are similar with respect to ease of implementation, cost efficiency, and the (in)significance of data defects, while, unsurprisingly, UAVP survey can be greater than one order of magnitude more labor efficient than RTK GNSS survey and over two orders of magnitude more detailed as measured by data density. The accuracy of both methods is high, within typical error budgets for site-level mapping, and comparable to other recent digital mapping approaches. Accordingly, the results suggest that, given site suitability, UAVP is the more labor and cost-efficient method in the long run, with significant data quality benefits.

scholarly journals Observation of Diurnal Ground Surface Changes Due to Freeze-Thaw Action by Real-Time Kinematic Unmanned Aerial Vehicle

2021 ◽  
Vol 13 (11) ◽  
pp. 2167
Author(s):  
Yasutaka Nakata ◽  
Masato Hayamizu ◽  
Nobuo Ishiyama ◽  
Hiroyuki Torita
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Slope Failure ◽  
Ground Surface ◽  
Topographic Wetness Index ◽  
Freeze Thaw ◽  
Real Time Kinematic ◽  
Aerial Vehicle ◽  
Negative Impacts ◽  
Surface Changes

Ground surface changes caused by freeze-thaw action affect agriculture and forestry, as well as artificial structures such as roads. In this study, an area is examined in which reforestation is urgently needed but the growth of naturally restored seedlings and planted trees is impaired by freeze-thaw action. Thus, a method of measuring freeze-thaw induced ground surface changes and mitigating their negative impacts is needed. Real-time kinematic unmanned aerial vehicle and structure-from-motion multiview stereophotogrammetry are used on slope-failure sites in forest areas to observe the ground surface changes caused by freeze-thaw action over a wide area, in a nondestructive manner. The slope characteristics influencing the ground-surface changes were examined, and it was confirmed that it is possible to observe minute topographical changes of less than ±5 cm resulting from freeze-thaw action. Statistical models show that the amount of freeze-thaw action is mostly linked to the cumulative solar radiation, daily ground-surface temperature range, and topographic-wetness index, which influence the microscale dynamics of the ground surface. The proposed method will be useful for future quantitative assessments of ground-surface conditions. Further, efficient reforestation could be implemented by considering the effects of the factors identified on the amount of freeze-thaw action.

scholarly journals Utilizing drone technology in the civil engineering

2019 ◽  
Vol 14 (1) ◽  
pp. 27-37
Author(s):  
Matúš Tkáč ◽  
Peter Mésároš
Keyword(s):  
Real Time ◽  
Unmanned Aerial Vehicle ◽  
Civil Engineering ◽  
Aerial Images ◽  
General Overview ◽  
Aerial Photogrammetry ◽  
Different Types ◽  
Aerial Vehicle

Abstract An unmanned aerial vehicle (UAVs), also known as drone technology, is used for different types of application in the civil engineering. Drones as a tools that increase communication between construction participants, improves site safety, uses topographic measurements of large areas, with using principles of aerial photogrammetry is possible to create buildings aerial surveying, bridges, roads, highways, saves project time and costs, etc. The use of UAVs in the civil engineering can brings many benefits; creating real-time aerial images from the building objects, overviews reveal assets and challenges, as well as the broad lay of the land, operators can share the imaging with personnel on site, in headquarters and with sub-contractors, planners can meet virtually to discuss project timing, equipment needs and challenges presented by the terrain. The aim of this contribution is to create a general overview of the use of UAVs in the civil engineering. The contribution also contains types of UAVs used for construction purposes, their advantages and also disadvantages.

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