TY - GEN
T1 - Comparison of the spatial and radiometric resolution of ERS and Metop C-band radars
AU - Elyouncha, Anis
AU - Neyt, Xavier
N1 - Publisher Copyright:
© 2014 SPIE.
PY - 2014
Y1 - 2014
N2 - ERS-1/2 and Metop-A/B satellites carry a very similar radars operating at similar frequencies (5.3/5.255 GHz) and same polarization (VV). However, the radars on-board the satellites of these two missions differ in the pulse waveform, bandwidth and slightly in geometry. Moreover, the on-board and the on-ground processing is different. This paper investigates the spatial and radiometric resolution of these radars and the resolution enhancement between ERS (1991-2011) and Metop (2006- ) missions. The spatial resolution assessment implies the computation and the comparison of the Spatial Response Function (SRF) of both systems. The SRF involves mainly the antenna gain pattern, the pulse waveform and the different on-board filtering stages. The radiometric resolution depends mainly on the signal to noise ratio (SNR) and the number of averaged independent samples (N). Furthermore, the correlation of the measurement samples in a resolution cell is computed to assess the independence assumption. The metric used to quantify the radiometric accuracy in scatterometry is called Kp which is the relative standard deviation. A comparison of Kp parameter extracted from the nominal products of the two missions confirms the expected performance based on the SNR, N and correlation analysis.
AB - ERS-1/2 and Metop-A/B satellites carry a very similar radars operating at similar frequencies (5.3/5.255 GHz) and same polarization (VV). However, the radars on-board the satellites of these two missions differ in the pulse waveform, bandwidth and slightly in geometry. Moreover, the on-board and the on-ground processing is different. This paper investigates the spatial and radiometric resolution of these radars and the resolution enhancement between ERS (1991-2011) and Metop (2006- ) missions. The spatial resolution assessment implies the computation and the comparison of the Spatial Response Function (SRF) of both systems. The SRF involves mainly the antenna gain pattern, the pulse waveform and the different on-board filtering stages. The radiometric resolution depends mainly on the signal to noise ratio (SNR) and the number of averaged independent samples (N). Furthermore, the correlation of the measurement samples in a resolution cell is computed to assess the independence assumption. The metric used to quantify the radiometric accuracy in scatterometry is called Kp which is the relative standard deviation. A comparison of Kp parameter extracted from the nominal products of the two missions confirms the expected performance based on the SNR, N and correlation analysis.
UR - https://www.scopus.com/pages/publications/84922648652
U2 - 10.1117/12.2068190
DO - 10.1117/12.2068190
M3 - Conference contribution
AN - SCOPUS:84922648652
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2014
A2 - Neyt, Xavier
A2 - Bostater, Charles R.
A2 - Mertikas, Stelios P.
PB - Society of Photo-Optical Instrumentation Engineers
T2 - Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2014
Y2 - 24 September 2014 through 25 September 2014
ER -