ALOS2_PALSAR2_ORTHO_Rivers20230727092647-en
English
JAXA DIAS representative
Japan Aerospace Exploration Agency (JAXA)
dias at ml dot jaxa dot jp
2023-07-27
DIAS Core Metadata Profile (based-on ISO 19115:2003/19139)
1.0(draft)
0
false
Satellite Dataset for land data assimilation (ALOS-2 > PALSAR-2)
2017-03-31
DIAS (Data Integration and Analysis System)
499:ALOS2_PALSAR2_ORTHO_Rivers
This data set is time sries of radar images of major river basin in South Ease Asia, which are produced for land data assimilation. They were observed by PALSAR-2 mounted on ALOS-2 that was developed by JAXA. The data consists of orthorectified gamma-naught images with and without slope-correction and local incidence angle (θlocal) images processed by Sigma-SAR.
The digital number (DN) of the image can be converted to the Normalized Radar Cross Section (gamma-naught, sigma-naught) using the following equation,
Gamma-naught (dB) = 10*log10(DN^2)-83,
Sigma-naught = Gamma-naught*cos(θlocal).
JAXA DIAS representative
Japan Aerospace Exploration Agency (JAXA)
+81 50 3362 3064
2-1-1, Sengen
Tsukuba
Ibaraki
305-8505
dias at ml dot jaxa dot jp
JAXA DIAS representative
Japan Aerospace Exploration Agency (JAXA)
dias at ml dot jaxa dot jp
Disasters
Water
GEOSS
English
geoscientificInformation
inlandWaters
[Data format]: Geotiff
[Filename rules]:
Orthocorrected image:
yyyymmdd_AAAA_BBBDDD_E_FFFFFF_GG.tif
Orthocorrected and slope-corrected image:
yyyymmdd_AAAA_BBBDDD_E_FFFFFF_sl_GG.tif
Local incidence angle image:
yyyymmdd_AAAA_BBBDDD_E_FFFFFF_linci.tif
yyyymmdd: Observation date
AAAA: Satellite name
'ALOS1':ALOS-1
'ALOS2':ALOS-2
BBB: Beam Mode
'FBD': Fine Beam Dual (ALOS-1)
'WB1': ScanSAR nominal mode (ALOS-1)
'WBD': Wide Beam Dual (ALOS-2)
DDD: Off-nadir angle
E : Ascending/Descending
'A':Ascending orbit
'D':Descending orbit
FFFFFF: RSP path number
[Radiometric conversion]:
Digital Number is converted to gamma-naught by the following equation.
Gamma-naught (dB) = 10*alog10(DN^2)-83.
69
121.5
-8.4
34.5
2014-05-24
9999-12-31
M. Shimada, Ortho‐Rectification and Slope Correction of SAR Data Using DEM and Its Accuracy Evaluation. IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens. 3, 657–671 (2010).
Satellite Dataset for land data assimilation (ALOS-2 > PALSAR-2)
2017-03-31
ALOS2_PALSAR2_ORTHO_Rivers20230727092647-en
In this MD_DataIdentification class, we describe an identification information related to the project belong to this dataset.
English
http://www.eorc.jaxa.jp/ALOS/en/index.htm