Wind Scatterometer (WS) Processor Releases
Several successive processor versions have been developed for the improvement of the quality of ERS-2 Wind Scatterometer products.
The current processor software version for the operational ground segment is ASPS v 10.04. The table below shows the history of the processors released with time and the improvements applied to the ERS-2 Wind Scatterometer Products for each version.
| IPF | Prototype | Product Spec | Processor updates | Operational switch date |
|---|---|---|---|---|
| ASPS 10.04 | WSP v 10.4 | ERSE-GSEV-EOPG-RS-06-0002 | • Re-fined calibration of the three backscattering measurements (sigma noughts) • Retrieved wind vectors characterized in terms of CMOD5N (neutral wind) geophysical forward model derived by ECMWF, 4 aliased wind vector solutions (Rank 1-4) and de-aliased wind vector flag • Sea-ice probability and sea-ice flag • YAW error angle flag to be used as quality indicator filter during the Zero Gyro Mode (ZGM) period from 2001 until the end of the ERS-2 mission | Whole Mission reprocessed |
| ESACA v9002 | WSP v 7.2 | • Improvements in the calibration (flat gamma nought profile across track) •Improvements in the wind retrieval scheme (ESA winds match ECMWF C-MOD4 winds) | Since August 2003 | |
| ESACA v9002 | WSP v 6.1 | • Yaw flag associated to the node | Since April 2003 | |
| ESACA v9001 | WSP v 6.0 | • Possibility to reprocess wind scatterometer in Zero Gyro Mode • Generation of the HEY Products to monitor satellite attitude | Since January 2003 | |
| LRDPF | Based on a large number of pre-computed off-line parameters (Look Up Table) interpolated throughout the processing | Since launch |