TY - GEN
T1 - Swell parameters retrieval using ALOS/PALSAR data
AU - Wei, Yongliang
AU - Kawamura, Hiroshi
AU - Tang, Zeyan
PY - 2013/12/1
Y1 - 2013/12/1
N2 - We have developed retrieval methods for swell parameters such as wave height, wavelength, and wave propagation direction from images of ALOS/PALSAR taken over coastal seas around Japan. The retrieval methods for wavelength and wave direction used the PALSAR image spectrum. Using the coupling swell spectra and the PALSAR image spectra, an empirical L-band modulation transfer function (MTFL-band) was obtained for the wave height retrieval through linear regression analysis. A comparison between SAR-derived and in situ wave parameters showed close agreement. For the wave direction, the bias, root mean-square error (RMSE) and correlation coefficient were 1.3°, 15.5° and 0.94, respectively. For the wavelength, the bias, RMSE and correlation coefficient were 10.4 m, 18.3 m and 0.93, respectively. These results demonstrate that the L-band SAR imaging mechanism for swells is mostly linear. For the wave height, the bias, RMSE and correlation coefficient were 0.08 m, 0.30 m and 0.80, respectively.
AB - We have developed retrieval methods for swell parameters such as wave height, wavelength, and wave propagation direction from images of ALOS/PALSAR taken over coastal seas around Japan. The retrieval methods for wavelength and wave direction used the PALSAR image spectrum. Using the coupling swell spectra and the PALSAR image spectra, an empirical L-band modulation transfer function (MTFL-band) was obtained for the wave height retrieval through linear regression analysis. A comparison between SAR-derived and in situ wave parameters showed close agreement. For the wave direction, the bias, root mean-square error (RMSE) and correlation coefficient were 1.3°, 15.5° and 0.94, respectively. For the wavelength, the bias, RMSE and correlation coefficient were 10.4 m, 18.3 m and 0.93, respectively. These results demonstrate that the L-band SAR imaging mechanism for swells is mostly linear. For the wave height, the bias, RMSE and correlation coefficient were 0.08 m, 0.30 m and 0.80, respectively.
KW - NOWPHAS
KW - PALSAR
KW - SAR spectrum
KW - surface wave spectrum
KW - swell parameter retrieval
UR - http://www.scopus.com/inward/record.url?scp=84894252695&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84894252695&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2013.6723307
DO - 10.1109/IGARSS.2013.6723307
M3 - Conference contribution
AN - SCOPUS:84894252695
SN - 9781479911141
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 2416
EP - 2419
BT - 2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings
T2 - 2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013
Y2 - 21 July 2013 through 26 July 2013
ER -