Application of ENVISAT ASAR Data in Mapping Rice Crop Growth in Southern China

Author

Chen, Jinsong ; Lin, Hui ; Pei, Zhiyuan

Author_Institution

Inst. of Space & Earth Inf. Sci., Chinese Univ. of Hong Kong, Hong Kong

Volume

4

Issue

3

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

431

Lastpage

435

Abstract

This research letter presents preliminary results of mapping rice crop growth using ENVISAT advanced synthetic aperture radar (ASAR) alternating polarization HH/HV data. Four ASAR HH/HV images were collected in the early rice-growth cycle in the test site in 2006, and the temporal response of ASAR data to the rice field was analyzed. The height and biomass of rice were measured during acquisition of ASAR data, and empirical relationships were established between the backscattering coefficient and these two parameters. Based on the temporal variation of the radar response, a method for mapping a rice growth area was developed using the combination of ASAR HH and HV polarization data between two acquisition dates. The results confirm that C-band SAR data have great potential in the development of an operational system for monitoring rice crop growth in Southern China.

Keywords

crops; data acquisition; remote sensing by radar; synthetic aperture radar; vegetation mapping; AD 2006; ASAR data acquisition; Advanced Synthetic Aperture Radar; C-band SAR data; ENVISAT ASAR Data; Environmental Satellite; HH/HV images; Southern China; rice biomass; rice crop growth mapping; rice-growth cycle; temporal variation; Backscatter; Biomass; Crops; Image analysis; Polarization; Remote monitoring; Satellites; Synthetic aperture radar; Testing; Vegetation mapping; ENVISAT Advanced Synthetic Aperture Radar (ASAR); rice; rice mapping;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2007.896996

Filename

4271444