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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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Journal DOI :
Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography
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Volume & Issues
Volume 28, Issue 6 - Dec 2010
Volume 28, Issue 5 - Oct 2010
Volume 28, Issue 4 - Aug 2010
Volume 28, Issue 3 - Jun 2010
Volume 28, Issue 2 - Apr 2010
Volume 28, Issue 1 - Feb 2010
Selecting the target year
Comparison of LiDAR Data Accuracy Using CORS
Kang, Joon-Mook ; Won, Jae-Ho ; Kim, Tae-Hoon ; Hong, Yong-Hyun ; Lee, Gun-Ho ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 479~484
In the airborne laser survey with GPS/INS, based on kinematic, the installation and operation of GPS base stations is necessary to allow three-dimensional location coordinates to be obtained quickly and precisely. However, in many cases, GPS base stations operate under difficult conditions. In this paper, we investigate the substitutability of continuously operating reference stations (CORS) for base stations, and we examine the influence of the distance between aircraft GPS and CORS on the Z-value. The results of our study demonstrate that, if the performance of GPS base stations within regulation distance is replaced with that of CORS, sufficient accuracy is guaranteed. Moreover, the performance of CORS beyond regulation distance is fairly good.
3D Stereoscopic Terrain Extraction of Road Cut Failure Slope Using Unmanned Helicopter Photography System
Jang, Ho-Sik ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 485~491
Acquisition of information on failure slope, which may cause apprehension of second hand damage, requires acquisition of fast and accurate topographical data and efficient expression in indirect surveying method without accessing as needed. Therefore, in this study, the images on the intended area were photographed through hovering in the air by approaching collapsed road cut slope with the use of unmanned helicopter photography system. As a result of comparing the points observed by no prism total station and the 10 coordinate points analyzed through image analysis, the averages of absolute values were shown to be 0.056m in X axis direction, 0.082m in Y axis direction and 0.066m Z axis direction. In addition, the RMSE of the error for 10 points of test points were 0.015636m in X axis direction, 0.021319m in Y axis direction and 0.018734m in Z axis direction. Therefore, this method can determine the range of slope and longitudinal and cross sections of each slope in dangerous area that cannot be approached in relational image matching method for the terrains of such collapsed cut slope.
Land cover classification of a non-accessible area using multi-sensor images and GIS data
Kim, Yong-Min ; Park, Wan-Yong ; Eo, Yang-Dam ; Kim, Yong-Il ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 493~504
This study proposes a classification method based on an automated training extraction procedure that may be used with very high resolution (VHR) images of non-accessible areas. The proposed method overcomes the problem of scale difference between VHR images and geographic information system (GIS) data through filtering and use of a Landsat image. In order to automate maximum likelihood classification (MLC), GIS data were used as an input to the MLC of a Landsat image, and a binary edge and a normalized difference vegetation index (NDVI) were used to increase the purity of the training samples. We identified the thresholds of an NDVI and binary edge appropriate to obtain pure samples of each class. The proposed method was then applied to QuickBird and SPOT-5 images. In order to validate the method, visual interpretation and quantitative assessment of the results were compared with products of a manual method. The results showed that the proposed method could classify VHR images and efficiently update GIS data.
A Study on the Tidal Harmonic Analysis, and long-term Sea Level Ocillations at Incheon Bay
Lee, Yong-Chang ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 505~513
This study investigate the characteristics of tidal constituents, and long-term mean sea level oscillations at Incheon bay. For this, the conditions of three tide stations around Incheon bay have examined, and carried out harmonic analysis on water level data for periods of about 40 years(1960~2007). Four major tidal constituents(
) of each tide station showed tendency that change over the 18.61year lunar node cycle, and the type of tide at three stations is mainly semi-diurnal tides. And also, the past monthly tidal modulations are especially sensitive to the cumulative year of water level data in accuracy of tidal prediction. In case that regard the detached data at three tide stations as a single time series data of 40 years, the results of analysis on a single time series, long-term mean sea level oscillations and modulations of tidal datum at tide stations appears with a range of about 10cm, respectively. In addition, the predicted tides at the Inchcon harbor by global and regional tide models of OSU(Oregon State University) based on various satellite altimetric(Topex Poseidon, Topex Tandem, ERS, GFO) data are compared with the observed tides by KHOA(the Korea Hydrographic and Oceanographic Administration). The results show that the high resolution regional model is a quite good agreement at coastal shallow water region.
Evaluation of Spatial Information Industry Using System Dynamics
Choi, Ki-Youl ; Cho, Won-Woo ; Kim, Kam-Rae ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 515~522
With the development of information technology, the demand on digitalized space information is being largely expanded in our society. Especially, the recency securing of material as well as various policy alternatives like expansion on an application scope are being required in the spatial information utilization field, such as efficient use and management of the land, various spatial plans, environment and disaster management, etc. The present research aims to suggest an evaluation model by applying the system dynamics theory for dynamic analysis on utilization of this spatial information.
The analysis of the tide and drift correction models for precise gravity surveying
Lee, Ji-Sun ; Kwon, Jay-Hyoun ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 523~530
Recently more gravity data is being obtained due to the increased demands from the fields of geodesy, geophysics, and military. In general, the observed gravity values are corrected for the effect of tide, instrument drift, and instrument height to generate the absolute gravity values at a point. Until yet, the models for tide and drift corrections and those procedures are not determined in Korea which led to the inconsistent data processing for different data sets. Therefore, in this study, the models for tide and drift are analyzed to select the appropriate models. Based on the analysis, it was found that there is not much difference between Longman and Tamura tide models for celestial objects. Earth tide, however, should be considered in tide correction procedure. In drift corrections, the difference between the model considering only the common points and that considering all points appears significantly large up to 0.04mGal. In this case, the model with all points should be used as it the correct one according to the adjustment theory and it generates estimates with better precision.
Determinate Real-Time Position and Attitude using GPS/INS/AT for Real-time Aerial Monitoring System
Han, Joong-Hee ; Kwon, Jay-Hyoun ; Lee, Im-Pyeong ; Choi, Kyoung-Ah ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 531~537
Real-time Aerial Monitoring System performs the rapid mapping in an emergency situation so that the geoinformation could be constructed in near real time. In this system, the position and attitude information from GPS/INS integration algorithm is used to perform the aerial triangulation(AT) without GCPs. Therefore, if we obtain Exterior Orientation(EO) estimates from AT sequentially, EO are used as the measurements in the Kalman filter. In this study, we simulate the GPS/IMS/Image data for an UAV-based aerial monitoring system and compare the GPS/INS/AT with and without from AT. Comparative analysis showed that result from the GPS/INS/AT with EO update is more accurate than without the update. However, when the vehicle turns, the position error significantly increases which need more analysis in the future.
The Development of Automatic Map-Publishing Technique for Military Map Production
Song, Hyun-Seung ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 539~546
A program which can produce military standard raster maps was developed. This includes the functions that classify the types of geospatial data, publish automatically based on paper map schema, and convert products with military standard raster formats. Especially, this paper presents the automatic map-publishing technique with mathematical modeling and controling the line width, color, shape that ever not used.
Estimation of Maximum Volume in Landfill Site Using Airborne LiDAR Measurement
Byun, Sang-Chul ; Choi, Myung-Kyu ; Kim, Jin-Kwang ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 547~554
This study intends to analyze how long the landfill site will be available by estimating maximum volume of landfill. Preestimated volume was calculated using digital maps and scheme drawings. The latest reclamation volume was measured using the state-of-the-art airborne LiDAR technology. Based on these data. landfill volume of now, carries in volume of past a few years and subsidence rate were calculated. As a result of study, the remaining capacity of this landfill site was estimated that it would be available till 2045.
Correction of Mt. Baekdu DEM Generated from SPOT-5 Stereo Images
Lee, Hyo-Seong ; Ahn, Ki-Weon ; Park, Byung-Uk ; Oh, Jae-Hong ; Han, Dong-Yeob ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 28, issue 5, 2010, Pages 555~560
The geoscientists are very interested in a volcanic reactivity of Mt. Baekdu. Periodical observation and monitoring are thus needed to detect the topographic and environmental changes of Mt. Baekdu. It is, however, very restrictive to survey with difficulty of observer's accessibility in the field due to political problems. This study therefore is to produce digital elevation model (DEM) of Mt. Baekdu using SPOT-5 stereo images. The produced DEM is very not accurate because of using without ground control points (GCP). To correct the previously generated DEM, scale-invariant feature transform(SIFT) matching method is adopted with shuttle radar topography mission(SRTM) DEM of NASA Jet Propulsion Laboratory(JPL). The results of the produced DEM to SRTM DEM matching indicate that the corrected DEM from SPOT-5 stereo images has more detail topographic structures. In addition, difference of spatial distances between the corrected DEM and SRTM DEM are much smaller than non-corrected DEM.