Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Application of NDVI Time-series Generation Technique Based on Spatial-temporal Fusion in Winter Whea
DOI:
10.16355/j.cnki.issn1007-9432tyut.2019.01.011
Received:
Accepted:
| Corresponding author | Institute | |
| College of Mining Engineering,Taiyuan University of Technology;High Resolution Earth Observation System Shanxi Data and Application Center |
abstract:
Normalized difference vegetation index(NDVI)with high spatial and temporal resolution is of great significance for dynamic monitoring of winter wheat,however,Gaofen-1 satellite can not get time-series data.With the aim to solve this problem,northeast Henan province was taken as the experimental area,the GF-1/WFV and MODIS surface reflectance product MOD09Q1 data of 5 different phenological periods of winter wheat were analyzed by STARFM spatial-temporal algorithm.The 5 different phenological periods include emergence and growth,over-wintering,returning green,jointing,and maturation.Finally,8 d step NDVI time-series data of GF-1/WFV was generated.The results show that correlation coefficients between predicted NDVI and actual NDVI of 5 different phenological periods are 0.695 9,0.840 4,0.892 1,0.897 0 ,0.632 9,generated NDVI time-series data of GF-1/WFV has high consistency with corresponding MOD09Q1 NDVI data.
Keywords:
NDVI;spatial-temporal fusion;STARFM;MODIS;GF-1;winter wheat;phenological period