• Korean Journal of Remote Sensing
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• v.39 no.2
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• pp.255-255
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• 2023

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.60-60
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• 2004

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.349-350
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• 2003

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.900-900
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• 2003

• Korean Journal of Remote Sensing
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• v.33 no.5_2
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• pp.617-620
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• 2017

The periodic monitoring of crop conditions and timely estimation of crop yield are of great importance for supporting agricultural decision-makings, as well as for effectively coping with food security issues. Remote sensing has been regarded as one of effective tools for crop condition monitoring and crop type classification. Since 2010, RDA (Rural Development Administration) has been developing technology for monitoring on crop condition using remote sensing and model. These special papers address recent state-of-the-art of remote sensing and geospatial technologies for providing operational agricultural information, such as, crop yield estimation methods using remote sensing data and process-oriented model, crop classification algorithm, monitoring and prediction of weather and climate based on remote sensing data,system design and architecture of crop monitoring system, history on rice yield forecasting method.

• Korean Journal of Remote Sensing
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• v.33 no.6_2
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• pp.1159-1169
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• 2017

Since 1970's, various satellite remote sensing technology has been developed and accumulation of observational data has been carried out, and coastal environment monitoring research is being conducted through analysis of relationship between satellite remote sensing data and coastal sedimentary environment. However, generation of coastal thematic maps by various national agencies are not included in the production of coastal themes using satellite imagery. In this study, we want to deduct the current problems through survey of marine spatial information provided by the government. The purpose of this study is to investigation the direction of the development of large scale coastal thematic maps by analyzing coastal boundary map, coastal topographic map and coastal sedimentary facies map.

• Aerospace Engineering and Technology
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• v.3 no.2
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• pp.141-148
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• 2004

The importance of satellite data for numerous applications is stressed by the fact that many countries have given the development of space technologies very high priority. Among these, Korea has established a medium-term space development strategy to promote space development both on a scientific as well as commercial level. As part of this strategy, the first operational earth-observation, multi-purpose satellite(KOMPSAT-1) was launched successfully in December, 1999. The Electro-Optical Camera (EOC) on board of KOMPSAT-1 supplies panchromatic images with a spatial resolution of 6.6m Until April, 2004, it collected over 150.000 images of the Korean Peninsula and the rest of the world. This paper examines the use of remote sensing data to analyze urban growth in the city of Daejeon from 1960 to 2003. By using visual interpretation, land use maps are created.

• Korean Journal of Remote Sensing
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• v.26 no.1
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• pp.29-38
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• 2010

It is necessary to develop an integration model which can account for various data acquired at different measurement scales in environmental thematic mapping with high-resolution ground survey data and relatively low-resolution remote sensing data. This paper presents and applies a multi-scale geostatistical methodology for downscaling of thematic maps generated from lowresolution remote sensing data. This methodology extends a traditional ordinary kriging system to a block kriging system which can account for both ground data and remote sensing data which can be regarded as point and block data, respectively. In addition, stochastic simulation based on block kriging is also applied to describe spatial uncertainty attached to the downscaling. Two downscaling experiments including SRTM DEM and MODIS Leaf Area Index (LAI) products were carried out to illustrate the applicability of the geostatistical methodology. Through the experiments, multi-scale geostatistics based on block kriging successfully generated relatively high-resolution thematic maps with reliable accuracy. Especially, it is expected that multiple realizations generated from simulation would be effectively used as input data for investigating the effects of uncertain input data on GIS model outputs.

• Korean Journal of Remote Sensing
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• v.14 no.4
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• pp.343-352
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• 1998

Spectral reflectance data of upland crops at OSMI bands were collected and evaluated for the feasibility of crop discrimination knowledge-based on crop calendar. Effective bands and their ratio values for discriminating corn from two other legumes were defined with OSMI equivalent bands and their ratio values. For corn discrimination from two other legumes, peanut and soybean, June 22 among measurements dates was the best since all OSMI equivalent bands and their ratio values in June 22 were highly significant for corn separability. Phenological growth stage of a silage corn (rs510) could be estimated as a function of spectral reflectance in vegetative stage. Five growth stage prediction models were generated by the SAS procedures REG and STEPWISE with OSMI equivalent bands and their ratio values in vegetative stage.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.101-101
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• 2016

하천원격탐사는 원격탐사의 하위 개념으로서 계측하고자 하는 대상인 하천이나 호소 수체에서 발생하는 빛의 반사, 복사 또는 방출되는 양을 획득하고 분석하여 수리량, 지형 등 하천 조사에 활용하는 기법이다. 일반적으로 원격탐사는 주로 위성영상 자료를 활용하여 수행되어 자료취득비용이 고가이고 해외 위성자료에 의존하여 시공간적인 해상도가 매우 낮아 유역에 비해 공간적인 규모가 작고 변동 시간이 짧은 하천에 적용하는 데 한계가 있어 왔다. 또한, 단순한 사진촬영으로 도출할 수 있는 정보에 한계가 있고 자료를 저장 및 분석할 수 있는 기법도 부족하여 하천조사에 원격탐사를 활용한 사례가 드물었다. 그러나, 최근 드론과 같은 운반체 기술이 획기적으로 개선되고 있고 다양한 영상촬영장비의 개발과 IT기술의 발전으로 인해 위성영상에 비해 시공간적 해상도가 매우 정밀한 자료를 저렴한 비용으로 획득 가능해졌다. 또한, 매우 조밀한 파장대로 세분된 빛의 세기를 측정할 수 있는 초분광 영상을 이용한 원격탐사기법도 하천과 같은 좁은 영역에 적용이 가능해졌다. 초분광영상은 가시광선 외에 자외선과 적외선 영역에 해당하는 반사광을 200개 이상의 조밀한 파장대로 나누어 측정할 수 있어 수리량, 하상, 식생 등 하천 수체와 관련된 정보를 조사할 가능성이 증가하였다. 본 연구에서는 하천 수체에서 취득한 초분광 영상을 이용하여 하천특성과의 상관관계를 규명하고 이를 통해 초분광 영상 기반의 하천특성 계측 기법을 개발하고자 하였다. 드론과 같은 항공영상에 적용하기 전에, 우선 지상에서 측정된 초분광 영상과 하상재료 및 수심과의 상관관계를 규명하여 초분광 영상의 하천조사로의 사용 가능성을 점검해 보았다. 폭 10m, 수심 1m의 저수심의 소하천에 적용한 결과, 초분광 영상의 표준화 및 패턴 분석을 통해 수중에 위치한 하상재료를 구분할 수 있었고 주성분분석 등을 통해 수심과 상관성도 일부 도출되어 하천조사에 초분광영상이 활용될 수 있음을 확인하였다.