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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.4, 2000³â, pp.427-435
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½Ã°è¿ À§¼º·¹ÀÌ´õ ¿µ»óÀ» ÀÌ¿ëÇÑ Ä§¼öÁö Á¶»ç
( Analysis of Flood Inundated Area Using Multitemporal Satellite Synthetic Aperture Radar (SAR) Imagery ) |
| À̱Լº;±è¾ç¼ö;À̼±ÀÏ; ÀÎÇÏ´ëÇб³ Áö¸®Á¤º¸°øÇаú;±¹¸³¹æÀ翬±¸¼Ò ¹æÀ翬±¸½ÇÀå;ÀÎÇÏ´ëÇϱ³ Áö¸®Á¤º¸°øÇаú;
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| ħ¼öÁö¿¡ ´ëÇÑ ½Å¼ÓÇϰí Á¤È®ÇÑ ÁöµµÀÇ Á¦ÀÛÀº È«¼öÀçÇØ º¹±¸¿Í °ü¸® ¹× ¿¹¹æÀ» À§ÇÑ Áß¿äÇÑ ÀÚ·á·Î »ç¿ëµÈ´Ù. Ÿ À§¼º¿µ»ó¿¡ ºñÇÏ¿© ±â»óÁ¶°Ç¿¡ °ü°è¾øÀÌ ¿µ»óÀÚ·áÀÇ È¹µæÀÌ ¿ëÀÌÇÑ ·¹ÀÌ´õ ¿µ»óÀ» ÀÌ¿ëÇÏ¿© ħ¼öÁö Á¶»ç¿Í È«¼öÈÄÀÇ ³ó°æÁö º¹±¸ »óŸ¦ ÆÄ¾ÇÇϰíÀÚ ÇÏ¿´´Ù. 1999³â ¿©¸§ °æ±âµµ ºÏºÎ Áö¿ª¿¡ ¹ß»ýÇÑ È«¼ö »ç»óÀ» »ç·ÊÁö·Î ÇÏ¿© C-band RADARSAT À§¼º¿µ»óÀ» ÀÌ¿ëÇÏ¿´°í, ħ¼ö ½ÃÁ¡ÀÎ 8¿ù 4ÀÏ ¿µ»ó°ú ±× ÀüÈÄ ¿µ»óÀ» Æ÷ÇÔÇÏ¿© ¼¼ ½Ã±âÀÇ ¿µ»óÀ» ÀÌ¿ëÇÏ¿´´Ù. ¿µ»óÀÇ ±âÇϺ¸Á¤ ¹× ÀâÀ½ Á¦°Å µî Àüó¸® °úÁ¤À» °ÅÄ£ ÈÄ ¼¼ ½Ã±âÀÇ ¿µ»ó¿¡¼ ³ªÅ¸³ª´Â ¿©·¯ ÁöÇ¥¹°µéÀÇ ·¹ÀÌ´õ¹Ý»ç½ÅÈ£ÀÇ º¯È¸¦ ºÐ¼®ÇÏ¿´´Ù. ¼ö¸é, ³í, ¹ç »ê¸² µîÀÇ ´Ù¾çÇÑ ÁöÇ¥¹°ÀÇ ½Ã±âº° ¹Ý»ç½ÅÈ£¸¦ ºÐ¼®ÇÑ °á°ú, ħ¼öµÇ¾ú´ø ³í¿¡¼ ¶Ñ·ÇÇÑ ¹Ý»ç½ÅÈ£ÀÇ Â÷À̸¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ È«¼ö ÀÌÈÄÀÇ ¿µ»óÀÎ 8¿ù 14ÀÏ ¿µ»óÀ» ÇÔ²² ºÐ¼®ÇÔÀ¸·Î½á ħ¼öµÇ¾ú´ø ³íÀÇ º¹±¸»óÅ¿¡ µû¸¥ Â÷À̸¦ ±¸ºÐÇÒ ¼ö ÀÖ¾ú°í, ÀÌ·¯ÇÑ °á°ú´Â ¼¼ ½Ã±âÀÇ Ä®¶óÇÕ¼º¿µ»ó¿¡¼µµ ½±°Ô ÆÇµ¶µÇ¾ú´Ù. |
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| It is often crucial to obtain a map of flood inundated area with more accurate and rapid manner. This study attempts to evaluate the potential of satellite synthetic aperture radar (SAR) data for mapping of flood inundated area in Imjin river basin. Multitemporal RADARSAT SAR data of three different dates were obtained at the time of flooding on August 4 and before and after the flooding. Once the data sets were geometrically corrected and preprocessed, the temporal characteristics of relative radar backscattering were analyzed. By comparing the radar backscattering of several surface features, it was clear that the flooded rice paddy showed the distinctive temporal pattern of radar response. Flooded rice paddy showed significantly lower radar signal while the normally growing rice paddy show high radar returns, which also could be easily interpreted from the color composite imagery. In addition to delineating the flooded rice fields, the multitemporal radar imagery also allow us to distinguish the afterward condition of once-flooded rice field. |
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| Ű¿öµå |
| È«¼ö;¿ø°ÝŽ»ç;À§¼º¿µ»ó;½Ã°è¿ ·¹ÀÌ´õ¿µ»óÀÚ·á;ħ¼ö³óÁö;Flood mapping;remote sensing;SAR;rice paddy;multitemporal data; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.4, 2000³â, pp.427-435
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920063793)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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