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L1-norm optimisation of rank deficient GNSS networks by an improved Grey Wolf method Surv. Rev. (IF 1.6) Pub Date : 2024-03-12 V. Mahboub, S. Ebrahimzadeh, A. Baghani, A. Rastegar, M. Zanganeh
An improved grey wolf optimization (GWO) is proposed for direct L1-norm optimization in rank deficient GNSS networks to detect outliers since the standard GWO and the global optimization (GO) algor...
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Developing a mobile application with geo-analytic tools to perform real estate valuation within smart cities Surv. Rev. (IF 1.6) Pub Date : 2024-03-05 Arif Cagdas Aydinoglu, Rabia Bovkir, İsmail Colkesen, Eren Can Seyrek, Mehmet Selim Bilgin
Urban land management policies and applications require comprehensive information about real estate development dynamics and value criteria. In this study, geo-analytic tools and a mobile app were ...
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Part segmentation method of point cloud considering optimal allocation and optimal mask based on deep learning Surv. Rev. (IF 1.6) Pub Date : 2024-03-05 Xijiang Chen, Xi Sun, Bufan Zhao, Dongmei Tan, Chong Wu
In order to enhance the generalization ability of the network and improve the precision of the part segmentation, a point cloud part segmentation method which takes into account the optimal allocat...
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Customary land secretariats as a panacea for improved land governance in Ghana Surv. Rev. (IF 1.6) Pub Date : 2024-02-21 Senu Maha-Atma Pomevor
The Customary Land Secretariats (CLS) are established to keep accurate and updated records of land transactions which would improve land governance. A case study of the Wassa Fiase traditional area...
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The prevalent perplexities and countermeasures of the survey and settlement operation of Bangladesh Surv. Rev. (IF 1.6) Pub Date : 2024-02-16 Shakil Ahmed, Rafea Khatun
Identification of land through an effective land survey ensures a secure land tenure system as well as conveys a smooth settlement of land disputes. At this backdrop, the study is framed with the o...
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Registration of oblique photography point clouds with terrestrial laser scanning point clouds based on geometric features of irregular building Surv. Rev. (IF 1.6) Pub Date : 2024-01-25 Jinghai Xu, Haoran Jing, Nan Shen
Matching the terrestrial laser scan point clouds with the unmanned aerial oblique photography point clouds of high-rise irregular buildings can make them complementary. The challenge lies in the di...
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List of reviewers 2023 Surv. Rev. (IF 1.6) Pub Date : 2024-01-08
Published in Survey Review (Vol. 56, No. 394, 2024)
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Land administration domain model profile for Kenya Surv. Rev. (IF 1.6) Pub Date : 2023-12-26 Clifford Okembo, Christiaan Lemmen, David Kuria, Jaap Zevenbergen
Developing a Land Administration Domain Model (LADM) profile for a country is an important process. This enables sound management of land and facilitates complete Land Administration covering cadas...
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Augmentation approaches for geodetic permanent monitoring systems in dynamic urban environments Surv. Rev. (IF 1.6) Pub Date : 2023-12-21 P. Bauer, W. Lienhart
The consolidation of Building Information Modelling (BIM) on construction sites and the preparation of the Internet-of-Things (IoT) in urban city planning are on-going processes. Therefore, the ope...
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Model agnostic interpretable machine learning for residential property valuation Surv. Rev. (IF 1.6) Pub Date : 2023-12-18 Tugba Gunes
Machine learning algorithms commonly outperform the traditional hedonic models in property valuation; however, it is hard to capture the inner workings of these complex models due to their black-bo...
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Assessment of temporal variations of orthometric/normal heights at proposed International Height Reference Frame sites using GRACE/GRACE-FO Surv. Rev. (IF 1.6) Pub Date : 2023-12-18 Samuel Milki Yadeta, Walyeldeen Godah, Malgorzata Szelachowska, Georgia Fotopoulos
The objective of this research is to assess temporal variations of orthometric/normal height (ΔH/ΔH*) at proposed International Height Reference Frame (IHRF) sites. GRACE/GRACE-FO-based Global Geop...
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Modelling of spatial planning systems with LADM standard: the case in Turkish regulatory planning system Surv. Rev. (IF 1.6) Pub Date : 2023-11-13 Okan Yılmaz, Hicret Gürsoy Sürmeneli, Mehmet Alkan
Spatial planning includes various decisions that guide the formulation of land policies, such as planned urbanisation, environment-nature-culture protection, and safe agriculture. Land Administrati...
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A direct approach for L1-norm minimisation Surv. Rev. (IF 1.6) Pub Date : 2023-10-31 Vahid Mahboub
A straightforward algorithm is proposed for L1-norm minimisation. The proposed algorithm is based on grey wolf optimisation which is a meta-heuristic method. Although L1-norm is an efficient tool f...
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Performance assessment of continuously operating reference stations using the deemed rover analysis approach with NRTK GNSS technique in Thailand Surv. Rev. (IF 1.6) Pub Date : 2023-10-10 Puttipol Dumrongchai, Nantawat Kongkratock, Chalermchon Satirapod, Khetsophon Phinyo
The study initiated an evaluation of the GNSS continuously operating reference stations (CORS) performance for Network-based Real-Time Kinematic (NRTK) positioning in Thailand, using the deemed rov...
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Research on the performance of the PPP-AR technique under different FCB product services Surv. Rev. (IF 1.6) Pub Date : 2023-09-22 Furkan Karlitepe, Bahattin Erdogan
Researchers and manufacturers use the Precise Point Positioning (PPP) technique. After the phase biases of the satellites are resolved from GNSS networks, they are broadcast to users as Fractional ...
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Assessment of the trends of urban land lease price from spatio-temporal perspective in Ethiopia: evidence from Bahir Dar City Surv. Rev. (IF 1.6) Pub Date : 2023-09-22 Habtamu Bishaw Asres, Habtamu Sitotaw Semahegne, Abebe Mengaw Wubie
Land price maps help the government and stakeholders to recognize fluctuations in land values in the economy. This paper aims to examine the trends of land lease prices from spatio-temporal perspec...
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Impact of using type mean vs. individual receiver antenna PCC in multi-GNSS PPP Surv. Rev. (IF 1.6) Pub Date : 2023-09-20 Karol Dawidowicz, Mieczysław Bakuła
In the paper, the differences between position components obtained using the precise point positioning (PPP) technique with individual and type mean PCC models were investigated. Daily GNSS observa...
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Impact of land users on the issuance of land use right certificates: A case study in Thanh Hoa City, Vietnam Surv. Rev. (IF 1.6) Pub Date : 2023-09-18 Nguyen Dinh Trung, Pham Phuong Nam
The goal of the study is to determine how land users affect the land certification process when compared with other factors. We investigated government officials who carry out land certification pr...
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Extraction and geospatial analysis of the Hersek Lagoon shoreline with Sentinel-2 satellite data Surv. Rev. (IF 1.6) Pub Date : 2023-09-14 Halil İbrahim Şenol, Yunus Kaya, Abdurahman Yasin Yiğit, Murat Yakar
In this study, the coastal changes in Hersek Lagoon, have occurred in the 5 years (2015 to 2020) were examined. With the Modified Normalised Difference Water Index (MNDWI), the water areas in the lagoon were determined by object-based classification. When the changes are examined on a regional basis, it is seen that there are erosion and accretion areas were observed. Pearson's r value was examined
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Technical thinking: how does e-land administration system promote the efficiency of cross-sectoral collaborative land governance in China? Surv. Rev. (IF 1.6) Pub Date : 2023-08-29 Yang Cheng, Pengpeng Li
The involvement of multiple stakeholders complicates urban land governance. The e-Land Administration System (e-LAS) is expected to help decision-makers cope with this challenge. The aim of this research is to explore the mechanism through which e-LAS promotes efficient cross-sectoral collaborative land governance (CSCLG) and to test its effectiveness in a Chinese city through an empirical case study
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A novel parallel constrained extended Kalman filter for improving navigation algorithm – case study: gas pipeline Surv. Rev. (IF 1.6) Pub Date : 2023-08-10 I. Hatefi Afshar, M. R. Delavar, B. Moshiri
In many real navigation problems, moving objects may have some state or measurement constraints along their way. Using these constraints in conventional Extended Kalman Filter (EKF) equations results large matrices which are computationally time-consuming. In this paper, a new Constrained Navigation Filter (CNF) is proposed as a parallel to reduce the computational burden of the conventional EKF algorithm
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Partial ambiguity resolution considering the multipath effects in a canyon environment Surv. Rev. (IF 1.6) Pub Date : 2023-08-08 Yi Dong, Zhetao Zhang, Lili Pang, Hanchuan Dong, Yanxin Shi
In the urban canyon environment, the integer ambiguity is hard to be fixed completely mainly because of the multipath effects, hence partial ambiguity resolution (PAR) is developed. This paper systematically introduces a new model-driven PAR method considering elevation and C/N0. Firstly, the theory of partial ambiguity resolution, the elevation-C/N0 function, and the proposed elevation-C/N0 PAR method
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A quality assessment of the Romanian National Program of Systematic Land Registration the point of view of local cadastral offices directors Surv. Rev. (IF 1.6) Pub Date : 2023-07-16 Vlad Păunescu, Alexandru Iulian Iliescu, Mariana Cătălina Călin, Tudor Sălăgean, Divyani Kohli, Mircea-Emil Nap, Elemer-Emanuel Șuba
The Romanian National Program of Systematic Land Registration is going very slow with only 4% of administrative units completed in almost ten years. The work is done by the private sector and is verified by local cadastral offices (OCPI). This research purpose is to find what is the quality of work and the areas where the private sector needs to improve the quality of the land registration service
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On transformations of ellipsoidal (triaxial) orthogonal curvilinear coordinates Surv. Rev. (IF 1.6) Pub Date : 2023-07-04 Tomás Soler, Jen-Yu Han
Ellipsoidal orthogonal curvilinear coordinates referred to a triaxial reference ellipsoid are not used in geodesy perhaps because of their theoretical complexity. However, many surveying and geodetic problems could be resolved by simply transforming variables between local frames. Herein it is shown that the computations of local displacements and variance-covariance matrices referred to currently
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GNSS rover receivers’ horizontal positioning accuracy assessments based on NRTK-VRS surveying Surv. Rev. (IF 1.6) Pub Date : 2023-07-05 Teetat Charoenkalunyuta, Chalermchon Satirapod, Namphon Saksanit, Thayathip Thongtan
This research investigates a horizontal positioning accuracy obtained from the NRTK-VRS GNSS positioning technique. Measured and computed RMSEs are compared based on the data obtained from 2122 tes...
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A field method to estimate the uncertainty of RTK measurements Surv. Rev. (IF 1.6) Pub Date : 2023-07-03 Amin Alizadeh-Khameneh, Milan Horemuž, Johan Vium Andersson, Sara Wahlund, Lars Jämtnäs
The expected accuracies obtainable with Network Real-Time Kinematic (NRTK) measurements are of interest to surveyors working on construction projects. This study introduces an NRTK-based free stati...
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The enhanced search procedure in a coordinate domain for precise satellite positioning Surv. Rev. (IF 1.6) Pub Date : 2023-06-29 Slawomir Cellmer, Krzysztof Nowel, Artur Fischer
Recently, there has been an increase in the availability of GNSS satellites for observation, which poses new challenges in the computational process of precise satellite positioning. Ambiguity reso...
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Best (orthogonal) fitting ellipsoid with quaternions Surv. Rev. (IF 1.6) Pub Date : 2023-06-23 Sebahattin Bektas
The aim of this study is the determination of the best fit ellipsoid to given points by quaternions. The problem of the fitting ellipsoid is frequently encountered in image processing, computer games, medicine, engineering and science applications, geodesy, etc. The ellipsoid fitting problem is the process of determining the ellipsoid that best fits a given set of points in 3D. In the fitting process
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An assessment of the Ethiopian national rural land administration information system conceptual model using LADM as a reference Surv. Rev. (IF 1.6) Pub Date : 2023-06-23 Adane Mehari Getie, Tadesse Amsalu Birhanu
The Land Administration and Use Directorate of the Ministry of Agriculture in Ethiopia designed a National Rural Land Administration Information System (NRLAIS). Its purpose was to align with the development of international standards in the land administration domain, specifically the Land Administration Domain Model (LADM), and to ensure the security of cadastral data. The findings revealed the necessity
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The dynamics of access and exclusion of women to land resources. a case study of Tambakha Simibungie Chiefdom, North-west Province, Sierra Leone Surv. Rev. (IF 1.6) Pub Date : 2023-06-20 Bankolay Theodore Turay, Romanus Dogkubong Dinye, Patrick Opoku, Ibrahim Sorie Koroma
For poor women in rural areas, land is the most critical economic resource. It is essential to have policies that facilitate access to and effective control of land and other natural resources to achieve inclusive growth and eradicate poverty. It is the weaker variants of inequalities that stifle tenure security, reduce land use, and threaten food security for those who depend on the land. Women's
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On auxiliary latitudes Surv. Rev. (IF 1.6) Pub Date : 2023-06-18 Charles F. F. Karney
The auxiliary latitudes are essential tools in cartography. This paper summarizes methods for converting between them with an emphasis on providing full double-precision accuracy. This includes ser...
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Weighted and partial total least squares method for the EIV model with linear equality and inequality constraints Surv. Rev. (IF 1.6) Pub Date : 2023-06-06 Yanmin Jin, Lizhou Sun, Xiaohua Tong, Shijie Liu, Yongjiu Feng, Sicong Liu
A weighted and partial total least squares method for the errors-in-variables (EIV) model with linear equality and inequality constraints is presented. A collected observation vector is formed by t...
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A general model of RCR modification and its geoid determination Surv. Rev. (IF 1.6) Pub Date : 2023-06-05 Linshan Zhong, Hongqing Li, Bin Wang, Shi Liu, Qiong Wu
The Stokes operator is used to transform gravity anomaly into geoid, and the remove-compute-restore (RCR) technique and Kungliga Tekniska Högskolan (KTH) method are commonly employed in calculating...
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Geometry-free TDRTK: a new time-difference RTK model considering multi-frequency observations Surv. Rev. (IF 1.6) Pub Date : 2023-05-31 Chunhe Liu, Hongzhou Chai, Minzhi Xiang, Zhenqiang Du
The time difference RTK (TDRTK) of GNSS can obtain high-precision baseline constraints to control the cumulative error of dead reckoning technology. However, the availability of traditional TDRTK d...
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Analysis of the existing rural land legislations in regulating interests on land in the Amhara region, Ethiopia Surv. Rev. (IF 1.6) Pub Date : 2023-05-25 Adane Mehari Getie, Tadesse Amsalu Birhanu, Teshome Taffa Dadi
For decades, the absence of land policies has contributed to land degradation in developing countries. The Amhara region of Ethiopia has formulated legislation and registered land. This study exami...
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Borneo triangulation 1968: a review and the way forward Surv. Rev. (IF 1.6) Pub Date : 2023-05-13 Joanes Jawan, Tajul Ariffin Musa, Wan Anom Wan Aris, Rozlan Putit, Ramzi Abdillah, Mohamad Iskandar Mohamad Usop
Triangulation is a classical geodetic practice to establish survey control networks by using measurements of angles and some spare distances. In this way, a series of reference points or simply cal...
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Assessing the utilization of UAV technology for cadastre update applications in Turkey based on cost-benefit analysis Surv. Rev. (IF 1.6) Pub Date : 2023-05-10 Kamil Karataş, Nurgül Seher Altınışık
The aim of this study is to examine the use of UAVs from various perspectives in cadastral update studies and present the advantages and disadvantages of this method. The cadastral data obtained th...
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Detection of GNSS spoofing using the Fourier transform of correlator outputs and mitigation using an autoencoder neural network Surv. Rev. (IF 1.6) Pub Date : 2023-05-03 S. Tohidi, M. R. Mosavi, A. A. Abedi
Present study focuses on defense against carry-off-type spoofing attacks which often cause distortion in the correlation function profile. Investigation of the frequency characteristics of the corr...
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A novel solution to planar feature-constrained, dual quaternion-based registration method for point clouds Surv. Rev. (IF 1.6) Pub Date : 2023-04-19 Raobo Li, Xiping Yuan, Shu Gan, Rui Bi, Sha Gao, Weidong Luo
To solve point cloud registration, a novel solution to planar feature-based registration of point clouds was proposed in this study according to dual quaternion description based on the constraint ...
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Performance investigation of GLONASS in the static PPP technique with independent short measurement times using online processing services Surv. Rev. (IF 1.6) Pub Date : 2023-04-16 Ömer Yurdakul
The precise point positioning (PPP) technique, which is still being developed, provides position accuracy at the centimetre (cm) level and is widely employed in scientific research. In the PPP technique, cm-level accuracy can be achieved by evaluating raw data obtained from a single Global Navigation Satellite Systems (GNSS) receiver using precise satellite orbit and clock correction data and other
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Single-station quad-constellation GNSS regional ionospheric modelling for navigation Surv. Rev. (IF 1.6) Pub Date : 2023-03-13 Guang Liu, Changsheng Cai, Yanjie Li
Conventionally, regional ionospheric models (RIMs) are established using GNSS at multiple stations. However, this will severely rely on the availability of the local GNSS observation network. In this study, a single-station quad-constellation GNSS regional ionospheric modelling (SQG-RIM) approach is proposed by establishing the RIM with the GPS/GLONASS/BDS/Galileo observations at a single station.
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Accuracy assessment of the SRTM2gravity high-resolution topographic gravity model in geoid computation Surv. Rev. (IF 1.6) Pub Date : 2023-03-06 Bihter Erol, Muhammed Raşit Çevikalp, Serdar Erol
The accuracy of the SRTM2gravity high-resolution topographic gravity model is tested in this study. Complete Bouguer anomaly datasets calculated with classical formula in planar approximation and using the SRTM2gravity model in spherical approximation were compared in the study area. Two geoid models computed using free-air anomalies, which were restored from each Bouguer anomaly datasets, were compared
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Performance of low-cost GNSS equipment in monitoring of horizontal displacements Surv. Rev. (IF 1.6) Pub Date : 2023-02-18 Güldane Oku Topal, Mustafa Fahri Karabulut, Nedim Onur Aykut, Burak Akpınar
To investigate theperformance of low-cost GNSS equipment in monitoring horizontal displacements ANN-MB-GNSS and A10 antenna were installed on Zeiss-BRT-006 reduktionstachymeter, which can move with mm sensitivity in the horizontal plane. Ten days of static data were recorded with U-Blox-ZED-F9P-02B-GNSS receiver and processed with CSRS-PPP online-service. Considering theobservation period(12,6,3,1h)
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Automatic segmentation and parallel phased least squares for highly efficient geodetic network parameter estimation Surv. Rev. (IF 1.6) Pub Date : 2023-02-16 Roger W. Fraser, Frank J. Leahy, Philip A. Collier
This paper describes a novel automatic segmentation algorithm and parallel phased least squares strategy. These developments have been motivated by a requirement to repeatedly estimate extremely la...
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An alternative to derive ionospheric and tropospheric SSR corrections for PPP-RTK using adaptive constraints Surv. Rev. (IF 1.6) Pub Date : 2023-02-03 Paulo Sergio de Oliveira Jr, Laurent Morel, João Francisco Galera Monico, Stéphane Durand, Frédéric Durand, Lucas dos Santos Bezerra
PPP-RTK (Precise Point Positioning – Real Time Kinematic) is a positioning method by GNSS (Global Navigation Satellite Systems), based on the SSR (State Space Representation) concept. One challenge for the fast convergence of PPP-RTK solutions in real-time applications is the mitigation of atmospheric effects (troposphere and ionosphere). Thus, using atmospheric models, PPP solutions can achieve accurate
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Assessing the performance of multi-GNSS precise point positioning technique on the geoid model validation Surv. Rev. (IF 1.6) Pub Date : 2023-01-24 Mehmet Simav, Berkay Bahadur, Hasan Yıldız, Ayhan Cingöz, Metin Nohutcu, Erdinç Sezen
This study aims to investigate the comparative performance of PPP technique in evaluating the precision of three distinct geoid models and to quantify the contribution of GLONASS constellation to G...
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A precise geoid model of Bosnia and Herzegovina by the KTH method and its validation Surv. Rev. (IF 1.6) Pub Date : 2023-01-04 Dževad Krdžalić, Ramazan Alpay Abbak
We compute the first gravimetric geoid model for Bosnia and Herzegovina (BHG2022) based upon the KTH method and additive corrections. The BHG2022 is computed with the help of 34,820 terrestrial gravity points and a digital elevation model produced by the Shuttle Radar Topography Mission. The gravity data is gridded onto a 0.02 arc-degree resolution via the nearest neighbour interpolation method. ITU_GGC16
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Blockchain-oriented geospatial architecture model for real-time land registration Surv. Rev. (IF 1.6) Pub Date : 2022-12-31 Ali Erdem Ozcelik
Obtaining geo-data and attributes of spatial units from heterogeneous database systems with different data formats for the same land properties is still one of the main problems. The emerging techn...
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Urban surface deformation monitoring and prediction by integrating SBAS-InSAR and Elman neural network Surv. Rev. (IF 1.6) Pub Date : 2022-12-28 Chaoqun Teng, Lei Wang, Chuang Jiang
The existing prediction methods have complex model application, high requirements for data parameters, and are limited to the prediction of a single observation point. To address this problem, this...
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Citizens’ satisfaction with the land registration procedure: evidence from Ha Dong district, Hanoi, Vietnam Surv. Rev. (IF 1.6) Pub Date : 2022-12-28 Quang Cuong Doan
This study aimed to discover citizens’ evaluation and satisfaction with land registration procedures. Using Hanoi as a case study, interviews were done at the Land Registration Office to clarify the satisfaction with land registration. The results show that the satisfaction rate was 74.6%. Collected data were analyzed through machine learning algorithms to find the factors affecting satisfaction. The
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Policy and legislative gaps in customary land revenue management in Ghana: emerging issues from Ashanti Region, Ghana Surv. Rev. (IF 1.6) Pub Date : 2022-12-03 Mustapha Okyere, Leonard Adusu, Pascal Zini, Kennedy Zinale, Bankolay Theodore Turay
This study examined the existing legal framework for mobilizing, distributing, and utilizing customary land revenue in Ghana. It combined a review of the regulatory framework on land revenue management and face-to-face interviews with Officers of the Administrator of Stool Lands with the view to identifying the gaps inherent in these regulations. The study found that the lack of legislative clarity
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List of reviewers 2022 Surv. Rev. (IF 1.6) Pub Date : 2022-11-13
Published in Survey Review (Vol. 55, No. 391, 2023)
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A combination constellation mode of kinematic PPP with priori constraints for determining ocean tide loading displacement Surv. Rev. (IF 1.6) Pub Date : 2022-11-11 Hong Zhao, Jiwei Zhu, Zhi Liu, Guangwei Jiang, Yangyang Sun
To improve the efficiency of estimation of deriving OTLD parameters with higher accuracy and take full advantage of multi-GNSS data, we investigate the potential of using global ocean tide model predictions as prior constraint for GLONASS and combined GPS+GLONASS kinematic precise point positioning (PPP), analyzing one year of GPS and GLONASS data from 20 Crustal Movement Observation Network China
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Derivation of 9-parameter affine 3D geodetic datum transformations Surv. Rev. (IF 1.6) Pub Date : 2022-11-02 A. C. Ruffhead
This paper proposes a new method of deriving 9-parameter affine 3D datum transformations by ordinary least-squares. Unlike previous methods, it covers all versions of the transformation. Initially, an ‘average’ scale factor is computed by distance analysis. Removing the scaling effect, the ‘RIGOPT’ subroutine is applied to optimise the rigid transformation that consists of 3 translations and 3 rotations
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Calculating the differences of VTEC values obtained by altimetric and GNSS observations in coastal areas Surv. Rev. (IF 1.6) Pub Date : 2022-10-27 Miloš Marković, Oleg Odalović, Marko Stanković
The difference between the VTEC values obtained from the Global Navigation Satellite System (GNSS) and satellite altimetry is much more noticeable over the ocean and the sea due to less coverage of the GNSS observations. Previous research shows that differences can go up to 15 TECU. The main problem is calculating VTEC from raw data which is ambiguous. This paper presents filtering methods for estimating
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Median robust nonlinear weighted total least squares estimator of nonlinear EIV models: three algorithms Surv. Rev. (IF 1.6) Pub Date : 2022-10-06 Chuan Hu, Chenghong Li, Chongyang Zhang, Lidu Zhao, Xiaomeng Fan, Yusen Zhou, Hongzhou Zhu, Zheng Chen
To improve robust estimation performance of fully correlated nonlinear error-in-variables model, three median robust estimate methods are discussed on base of Nonlinear Weighted Total Least Squares (NWTLS), namely, median parameter method, median parameter initial value method and median variance method. After the discussion of the median robust estimation theory and the derivation of the calculation
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Discontinuity set extraction from 3D point clouds obtained by UAV Photogrammetry in a rockfall site Surv. Rev. (IF 1.6) Pub Date : 2022-09-15 Murat Yakar, Ali Ulvi, Abdurahman Yasin Yiğit, Aydın Alptekin
Rockfall event is common on rocky terrain, and it threatens people. Recent advances in remote sensing technologies allow us to model the terrain with high accuracy and resolution. In this study, we show the application of modeling a rockfall site in three-dimensional (3D) using an unmanned aerial vehicle. The acquisition of information about discontinuities in the rock masses using 3D point clouds
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Data lifecycle of underground land administration: a systematic literature review Surv. Rev. (IF 1.6) Pub Date : 2022-09-15 Bahram Saeidian, Abbas Rajabifard, Behnam Atazadeh, Mohsen Kalantari
Underground Land Administration (ULA) plays a paramount role in recording, registering and managing underground ownership boundaries and rights, restrictions and responsibilities associated with underground assets. 3D digital models provide a great potential to modernise ULA as it is evident in research studies. Several steps, from data acquisition to the use of underground land data have been considered
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The Oblique Mercator for engineering and survey Surv. Rev. (IF 1.6) Pub Date : 2022-09-09 D. Abbey, L. Woolhouse, W. Featherstone
The Oblique Mercator (OM) has been the runt in the family of conformal coordinate projection where its particular attribute of arbitrary orientation has been largely ignored. It is proposed that the Oblique Mercator, as a conformal projection, is well-suited to bridge the gap between a conventional north-oriented projection and the family of engineering grids that are unit-scaled and arbitrarily oriented
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Improved chord method for the direct and inverse problems of the distances and azimuths on the reference ellipsoid Surv. Rev. (IF 1.6) Pub Date : 2022-09-09 Wei Quan, Jianjun Zhang, Chen Liu
Through transformation from geocentric to topocentric space rectangular coordinate system and taking advantage of the plain geometrical relationships from the chord between two points on the ellipsoidal surface, the problems of the distances and azimuths on the reference ellipsoid can be converted to several elementary equations and corresponding corrective terms. Based on this, an improved chord method