Method for detection of agricultural damage by natural disaster using SAR data

Kota Aoyagi, Madoka Hori, Genya Saito, Chinatsu Yonezawa, Shigeo Ogawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Estimation of agricultural damage caused by natural disaster is necessary. It is important to establish a method of monitoring the damage of paddy fields by natural disaster such as a volcanic eruption, an earthquake or flooding. Synthetic Aperture Radar (SAR) is one of the important remote sensing technologies. SAR actively radiates microwave and receives microwave reflection from various objects. Compared with optical remote sensing technique, we can analyze image without the effect of clouds and observe the surface of the earth in day and night. SAR microwave has different character for its wavelength. These characteristics are suitable for analysis of agricultural disaster for various situations. Actually, SAR is used in many scenes, for example, to measure the damage of a typhoon-fed flooding and a quake-triggered landslide. Water level drop of paddy fields caused by an earthquake is also a serious problem. In this study, we consider the way to measure the degree of water level drop by using SAR data. Specifically, we compared SAR intensity difference between the images obtained before and after the earthquake. Then we succeeded to measure the degree of water level drop.

Original languageEnglish
Title of host publication30th Asian Conference on Remote Sensing 2009, ACRS 2009
Pages1172-1176
Number of pages5
Publication statusPublished - 2009 Dec 1
Event30th Asian Conference on Remote Sensing 2009, ACRS 2009 - Beijing, China
Duration: 2009 Oct 182009 Oct 23

Publication series

Name30th Asian Conference on Remote Sensing 2009, ACRS 2009
Volume2

Other

Other30th Asian Conference on Remote Sensing 2009, ACRS 2009
CountryChina
CityBeijing
Period09/10/1809/10/23

Keywords

  • Agriculturaldamage
  • Natural disaster
  • Paddy fields
  • Synthetic aperture radar (SAR)

ASJC Scopus subject areas

  • Computer Networks and Communications

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