44 IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE JUNE 2022 TABLE 1. THE BRIEF TECHNICAL DETAILS OF HISTORIC AND CURRENT SPACEBORNE SCATTEROMETERS (KU AND C BANDS). PARAMETERS SCATTEROMETERS MICROWAVE BANDS Sensors Platform Frequency (GHz) Antenna configuration SASS SEASAT 14.6 NSCAT ADEOS-1 13.99 SeaWinds QuikSCAT ADEOS-1/-2 13.4 KU BAND (FREQUENCY RANGE: 12-18 GHZ) OSCAT OceanSat-2 13.51 ISS C-BAND (FREQUENCY RANGE: 4-8 GHZ) HY-2A/-2B/-2C RapidSCAT SCAT 13.25 13.4 SCATSAT-1 CFOSAT SCATSAT-1 CFOSCAT 13.51 13.25 AMI ERS-1/-2 5.3 ASCAT METOP-A/-B/-C 5.25 Polarization Incidence angle VH VH VV VH VV VV HH VV HH VV HH VV HH VV HH VV HH VV VV Spatial resolution (km) Beam resolution Swath (km) 50 25 Fixed Doppler Egg: 25 × 35 Slice: 6 × 25 Egg: 30 × 68 Slice: 6 × 30 Inner: 23 × 33 Outer: 26 × 37 Egg: 25 × 35 Slice: 6 × 25 Egg: 30 × 68 Slice: 6 × 30 25 12.5 50 SZO:25/50 SZF: 4 × 20 Variable Doppler Pencil beam Pencil beam Pencil beam Pencil beam Pencil beam Rotating fan beam Fixed fan beam Fixed fan beam Science modes Coverage (%) Many Wind Variable (<40) 78 Wind High-resolution wind 92 Wind High-resolution wind >90 Wind High-resolution wind >90 Wind High-resolution wind >51 Wind High-resolution wind >90 Satellite images are for illustration purposes. SAR: synthetic aperture radar; SCAT: scatterometer; SZO: Sigma Zero Operational Resolution; SZF: Sigma Zero Full Resolution. Wind High-resolution wind >90 Wind SAR <41 Wind 65