Filters








1,075 Hits in 11.4 sec

Comparison of the Continuity of Vegetation Indices Derived from Landsat 8 OLI and Landsat 7 ETM+ Data among Different Vegetation Types

Xiaojun She, Lifu Zhang, Yi Cen, Taixia Wu, Changping Huang, Muhammad Baig
2015 Remote Sensing  
Landsat 8, the most recently launched satellite of the series, promises to maintain the continuity of Landsat 7.  ...  The simulated data showed that OLI largely inherits the band-pass characteristics of ETM+.  ...  This research is jointly sponsored by the National Natural Science Foundation of China (Project Numbers 41371362, 41201348, and 41202234).  ... 
doi:10.3390/rs71013485 fatcat:77achiazyveafkqkrmxp5kjnlm

Cross-Comparison of Vegetation Indices Derived from Landsat-7 Enhanced Thematic Mapper Plus (ETM+) and Landsat-8 Operational Land Imager (OLI) Sensors

Peng Li, Luguang Jiang, Zhiming Feng
2013 Remote Sensing  
In addition, it also basically had higher values for the shortwave infrared (1.57-1.65 µm) band for non-water land cover types. (2) The subtle differences of vegetation indices derived from both sensors  ...  Landsat-7 Enhanced Thematic Mapper Plus (ETM+) and Landsat-8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are currently operational for routine Earth observation.  ...  Landsat-7/8 imagery is available from the US Geological Survey (USGS)  ... 
doi:10.3390/rs6010310 fatcat:q7bnyd75eres5ascwkmo5jzcva

Characteristics of Landsat 8 OLI-derived NDVI by comparison with multiple satellite sensors and in-situ observations

Yinghai Ke, Jungho Im, Junghee Lee, Huili Gong, Youngryel Ryu
2015 Remote Sensing of Environment  
The four pairs of Landsat 8 OLI and Landsat 7 ETM+ NDVI had a mean bias error within ±0.05, and R 2 from 0.84 to 0.98.  ...  Four consecutive pairs of Landsat 8 OLI and Landsat 7 ETM+ data over China and Korea were examined, and NDVIs derived from TOA reflectance and surface reflectance by three atmospheric correction methods  ...  Li, Jiang, and Feng (2014) compared vegetation indices from Landsat 7 ETM+ and Landsat 8 OLI imagery over Mekong River Basin and found extremely high consistency of vegetation indices (R 2 N 0.99).  ... 
doi:10.1016/j.rse.2015.04.004 fatcat:5fsblepptne5zf46zfhgcgl3u4

Cross-Comparison between Landsat 8 (OLI) and Landsat 7 (ETM+) Derived Vegetation Indices in a Mediterranean Environment

Giuseppe Mancino, Agostino Ferrara, Antonietta Padula, Angelo Nolè
2020 Remote Sensing  
Vegetation Index), and EVI (Enhanced Vegetation Index) have been derived from August 2017 ETM+ and OLI images (path: 188; row: 32) for the study area (Basilicata Region, located in the southern part of  ...  However, there are substantial differences between the information provided by Landsat 7 and Landsat 8.  ...  The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.  ... 
doi:10.3390/rs12020291 fatcat:q4vcnrfkmzds5jdcot2yoifroe

A Robust Algorithm for Estimating Surface Fractional Vegetation Cover from Landsat Data

Linqing Yang, Kun Jia, Shunlin Liang, Xiangqin Wei, Yunjun Yao, Xiaotong Zhang
2017 Remote Sensing  
Spatial-temporal assessment of the estimated FVC from Landsat 7 ETM+ and Landsat 8 OLI data confirmed the robustness and consistency of the proposed method.  ...  The direct validation of the FVC estimated using the proposed algorithm (Heihe: R 2 = 0.8825, RMSE = 0.097; Chengde using Landsat 7 ETM+: R 2 = 0.8571, RMSE = 0.078, Chengde using Landsat 8 OLI: R 2 =  ...  Conflicts of Interest: The authors declare no conflict of interest. Remote Sens. 2017, 9, 857  ... 
doi:10.3390/rs9080857 fatcat:mdnvs6zqdva6pmbt46xuxa2jba

Global cross-calibration of Landsat spectral mixture models [article]

Daniel Sousa, Christopher Small
2016 arXiv   pre-print
The 2013 underflight of Landsat 7 and 8 provides an opportunity to cross calibrate the spectral mixing spaces of the ETM+ and OLI sensors using near-simultaneous acquisitions from a wide variety of land  ...  Data continuity for the Landsat program relies on accurate cross-calibration among sensors.  ...  The authors thank those responsible for the free availability of the Landsat imagery used in this study, as well as those responsible for the extensive preprocessing of that  ... 
arXiv:1608.06825v1 fatcat:5qjkaun4rbhp3c7epgmv3mxmqy

Compare NDVI Extracted from Landsat 8 Imagery with that from Landsat 7 Imagery

Dandan Xu
2014 American Journal of Remote Sensing  
In this study NDVI values derived from Landsat 8 images were compared with those calculated from Landsat 7 and ground measured hyperspectral data.  ...  This indicates that NDVI of Landsat 7 and Landsat 8 is consistent when dealing with high vegetation covered areas (e.g. forest area and tall grass prairie) because the difference between Landsat 7 and  ...  Park and the University of Saskatchewan for logistical support.  ... 
doi:10.11648/j.ajrs.20140202.11 fatcat:yw5okx2fnrhbxjlmqbypoqyvim

Characterization of Landsat-7 to Landsat-8 reflective wavelength and normalized difference vegetation index continuity

D.P. Roy, V. Kovalskyy, H.K. Zhang, E.F. Vermote, L. Yan, S.S. Kumar, A. Egorov
2016 Remote Sensing of Environment  
between the Landsat-7 ETM+ and Landsat-8 OLI sensor data.  ...  The orbit and sensing geometries of the Landsat-8 OLI and Landsat-7 ETM+ provide swath edge overlapping paths sensed only one day apart.  ...  Landsat project management and staff at USGS Earth Resources Observation and Science (EROS) Center, Sioux Falls, South Dakota, are thanked for provision of the Landsat data used in this study.  ... 
doi:10.1016/j.rse.2015.12.024 pmid:32020954 pmcid:PMC6999663 fatcat:rmd7yp6nmbac5jpmlx5a3kurma

A Statistical Approach to Detect Land Cover Changes in Mediterranean Ecosystems Using Multi-Temporal Landsat Data: The Case Study of Pianosa Island, Italy

Maurizio Sarti, Francesco Primo Vaccari, Carlo Calfapietra, Enrico Brugnoli, Andrea Scartazza
2020 Forests  
The results indicate that surface reflectance (SR) Landsat images are more suitable in detecting the vegetation dynamics on the island than the top of atmosphere (TOA) ones and highlight an increasing  ...  The normalized difference vegetation index (NDVI) is commonly used to detect spatiotemporal changes of vegetation cover.  ...  Landsat 5 TM and 7 ETM+; (e) SR NDVI Landsat 7 ETM+ and 8 OLI.  ... 
doi:10.3390/f11030334 fatcat:p3xd44jgkvfk5luafupfgeye5e

Assessing the role of climate and resource management on groundwater dependent ecosystem changes in arid environments with the Landsat archive

Justin Huntington, Kenneth McGwire, Charles Morton, Keirith Snyder, Sarah Peterson, Tyler Erickson, Richard Niswonger, Rosemary Carroll, Guy Smith, Richard Allen
2016 Remote Sensing of Environment  
The objective of this work is to 1) use the Landsat 8 under-fly dataset to quantify differences in spectral reflectance and NDVI between Landsat 7 ETM+ and Landsat 8 OLI for a range of vegetation communities  ...  Results from the cross-sensor comparison indicate a benefit from the application of a consistent atmospheric correction method, and that NDVI derived from Landsat 7 and 8 are very similar within the study  ...  Objective The objective of this work is to 1) use the Landsat 8 under-fly dataset to quantify differences in spectral reflectance and vegetation indices between Landsat 7 ETM+ and Landsat 8 OLI for a range  ... 
doi:10.1016/j.rse.2016.07.004 fatcat:ruhos3fagbbxzocihjl7gad244

Estimating Soil Moisture with Landsat Data and Its Application in Extracting the Spatial Distribution of Winter Flooded Paddies

Bolun Li, Chaopu Ti, Yongqiang Zhao, Xiaoyuan Yan
2016 Remote Sensing  
The overall correlation coefficient (R) was 0.78, with root-mean-square ranging from 1.96% to 9.96% in terms of different vegetation cover and surface water status.  ...  This indicated that the derived geospatial dataset of WFP could be reliably applied to fill gaps in census statistics.  ...  Author Contributions: Bolun Li and Xiaoyuan Yan contributed to the experimental design of the study. Bolun Li collected field data, conducted the analysis of results and wrote the manuscript.  ... 
doi:10.3390/rs8010038 fatcat:l6qg6jixbna5rdcbutq4huyciy

Mapping paddy rice planting area in cold temperate climate region through analysis of time series Landsat 8 (OLI), Landsat 7 (ETM+) and MODIS imagery

Yuanwei Qin, Xiangming Xiao, Jinwei Dong, Yuting Zhou, Zhe Zhu, Geli Zhang, Guoming Du, Cui Jin, Weili Kou, Jie Wang, Xiangping Li
2015 ISPRS journal of photogrammetry and remote sensing (Print)  
The overall accuracy of the resulted map of paddy rice planting area generated by both Landsat ETM+ and OLI is 97.3%, when evaluated with areas of interest (AOIs) derived from geo-referenced field photos  ...  In this paper, time series MODIS and Landsat ETM+/OLI images, and the pixel-and phenology-based algorithm are used to map paddy rice planting area.  ...  Acknowledgements This study was supported by the research grants from the National Aeronautics and Space Administration (NASA) Land Cover and Land Use Change program (NNX11AJ35G, NNX14AD78G), the US National  ... 
doi:10.1016/j.isprsjprs.2015.04.008 pmid:27695195 pmcid:PMC5042353 fatcat:iriyj3crrrdpvhb3l3fnxlkehi

Radiometric Characteristics of the Landsat Collection 1 Dataset

Shuang Li, Weile Wang, Sangram Ganguly, Ramakrishna R. Nemani
2018 Advances in Remote Sensing  
We suggest that Landsat users should pay attention to differences in results from Pre-Collection and Collection 1 time-series data sets.  ...  The radiometric changes, −0.77% for L4 TM, 0.95% for L5 TM, −0.26% for L7 ETM+, and −0.01% for L8 OLI, were detected during the cross-calibration stage of converting DNs into TOA reflectance.  ...  Based on the Landsat Pre-Collection data, Roy et al. reported that both TOA and surface reflectance derived L7 ETM+ NDVI values are greater than that derived from the L8 OLI [31] .  ... 
doi:10.4236/ars.2018.73014 fatcat:o7pollwhzjgnxl2226x6xglgwi

Improved Automated Detection of Subpixel-Scale Inundation—Revised Dynamic Surface Water Extent (DSWE) Partial Surface Water Tests

John Jones
2019 Remote Sensing  
In order to produce useful hydrologic and aquatic habitat data from the Landsat system, the U.S. Geological Survey has developed the "Dynamic Surface Water Extent" (DSWE) Landsat Science Product.  ...  Spectral mixture models were created from a variety of laboratory and image-derived endmembers.  ...  Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Conflicts of Interest: The author declares no conflict of interest.  ... 
doi:10.3390/rs11040374 fatcat:shkj2gp3cbevdoex6exguoq5le

Application and Comparison of the MODIS-Derived Enhanced Vegetation Index to VIIRS, Landsat 5 TM and Landsat 8 OLI Platforms: A Case Study in the Arid Colorado River Delta, Mexico

Christopher Jarchow, Kamel Didan, Armando Barreto-Muñoz, Pamela Nagler, Edward Glenn
2018 Sensors  
Landsat and VIIRS provide EVI estimates of similar quality and characteristics to MODIS, but scale, seasonality and land cover type(s) should be considered before implementing Landsat EVI in a particular  ...  We compared Landsat 5 (2000-2011), 8 (2013-2016) and the Visible Infrared Imaging Radiometer Suite (VIIRS; 2013-2016) to MODIS EVI (2000-2016) over a 420,083-ha area of the arid lower Colorado River Delta  ...  Any use of trade, firm or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s18051546 pmid:29757265 pmcid:PMC5981297 fatcat:3r64lhsawbgffnrubkexw6ik7u
« Previous Showing results 1 — 15 out of 1,075 results