Papers by Syarif Budhiman
The Indonesian coastal zones have always been under heavy pressures, including those from fisheri... more The Indonesian coastal zones have always been under heavy pressures, including those from fisheries, oil industries and sea transportation. The presence of these activities carry a large portion of risk in damaging the environment as well as in destroying the marine resources, leading to the need for an integrated management approach based on an environmental information system that is comprehensive and multi-disciplinary in nature. The Mahakam Delta has the same general problems as other coastal regions in Indonesia. The method is based on bio optical modeling. The forward water analysis comprised the laboratory measurements of water quality (TSM and Chl) and Inherent Optical Properties (IOPs) to derive Spesific Inherent Optical properties (SIOPs). SIOPs (of water, TSM, Chl and CDOM), coefficient f and B were used to developed R(0-) model. The inverse atmosphere analysis comprised the image preprocessing (i.e. geometric correction, atmospheric correction, air-water interface correction). The last step is inverse water analysis, which comprised the development of algorithm and image processing to develop TSM concentration maps. The spectrometer measurements collected in the field were used for obtaining the subsurface irradiance reflectance. The subsurface irradiance reflectance R(0-) is the ratio of upwelling (E wu ) and downwelling irradiance (E wd ) just beneath the water surface. There are some discrepancies from matching R(0-) model and R(0-) measured in the field, especially in the blue region and NIR region. The reason of the discrepancies could be due to the fact that the Q factor (the angular distribution factor of spectral radiance) is still not understood completely. This model is very susceptible to the decrease of the proportional factor f, and to the increase of the backscattering probability B. The results indicates that red band of satellite sensor is sensitive to detect higher TSM concentration. For Mahakam Delta, red band algorithm was used to derive TSM map, since higher TSM concentration occurred in the delta.
Isprs Journal of Photogrammetry and Remote Sensing, 2012
à b;TSM ð550Þ) was found to be 0.0087 m 2 g À1 , and the specific absorption coefficient of Chl a... more à b;TSM ð550Þ) was found to be 0.0087 m 2 g À1 , and the specific absorption coefficient of Chl a (a à Chl ð440Þ) was found to be 0.023 m 2 g À1 in the Mahakam Delta. The estimated values of SIOP for TSM and Chl a could be considered spatially constant for the Mahakam Delta, and resulted in reliable estimates of TSM and Chl a concentrations (R 2 = 0.84 and 0.85 respectively). The specific backscattering coefficient of TSM found in this study is similar to that of the Barito Estuary (in the southern part of Kalimantan) but lower than that of the Berau Estuary (in the northern part of Kalimantan), whereas the specific backscattering coefficient of Chl a is similar to that found in the Berau Estuary. This study contributes to the development of an operational method based on remote sensing data to map water constituent concentrations in the Mahakam Delta, as well as to enrich the information about the optical properties of Indonesian waters. Ó
The Usage of Open Source Software for Interferometric Processing of Radar Data (Case Study: Mount... more The Usage of Open Source Software for Interferometric Processing of Radar Data (Case Study: Mount Merapi). The background of this research is the lack of knowledge about Interferometry Synthetic Aperture Radar (InSAR) especially using Radar data from satellite. The usage of InSAR Technique itself in fact already in implementation phase /application, where InSAR utilized in the making of Digital Elevation Model (DEM) and Digital Terrain Model (DTM). The usage of InSAR at this implementation phase generally use airborne radar data, or the Radar data placed at an aircraft. whereas, InSAR technique using spaceborne radar, or the radar data from satellite, still in research scale, because there are a lot of constraint in determining interference process from spaceborne radar data. This research use open source software. Open source means that the software can be developed again by all users because the software developer not only gives it for free, but also includes the source code of the software. Software used here is DORIS (Delft Object-Oriented Radar Interferometric Software) that is developed by TU Delft, the Netherlands. This Software can only be used on Linux environment operating system. The result proves that Doris software capable to process interferometry from Satellite radar, although the accuration for data processing of mountainous region still not yet knowable, however for the interferometry processing by freeware, Doris can be considered as good software for interferometrfy processing.
Mapping Landuse of Small Islands Using High Spatial Resolution Imagery (Case Study the Island of ... more Mapping Landuse of Small Islands Using High Spatial Resolution Imagery (Case Study the Island of Belakang Padang and Its Surroundings). Indonesia has more than 10000 small islands and some of them are located in the border area.
Mapping of Total Suspended Matter (TSM) Using Aster Data with Bio-Optical Model Approach. The Ind... more Mapping of Total Suspended Matter (TSM) Using Aster Data with Bio-Optical Model Approach. The Indonesian coastal zones have always been under heavy pressures, including those from fisheries, oil industries and sea transportation. The presence of these activities carry a large portion of risk in damaging the environment as well as in destroying the marine resources, leading to the need for an integrated management approach based on an environmental information system that is comprehensive and multi-disciplinary in nature. The Mahakam Delta has the same general problems as other coastal regions in Indonesia. The method is based on bio optical modeling. The forward water analysis comprised the laboratory measurements of water quality (TSM and Chl) and Inherent Optical Properties (IOPs) to derive Spesific Inherent Optical properties (SIOPs). SIOPs (of water, TSM, Chl and CDOM), coefficient f and B were used to developed R(0-) model. The inverse atmosphere analysis comprised the image preprocessing (i.e. geometric correction, atmospheric correction, air-water interface correction). The last step is inverse water analysis, which comprised the development of algorithm and image processing to develop TSM concentration maps. The results indicates that red band of Aster satellite sensor is sensitive to detect higher TSM concentration. Green band is sensitive to detect the lower TSM concentration. For Mahakam Delta, red band algorithm was used to derive TSM map, since higher TSM concentration occurred in the delta.
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Papers by Syarif Budhiman