# Look-Up Tables for SWH RMS test

This section describes in further details the methodology used to build the 
SWH RMS Look-Up Tables (LUT) used to filter out bad 1 Hz measurements.

## Selected cycles

The calculation of a SWH RMS LUT is applied to each altimeter mission on 8 
cycles. The  number of cycles is a trade-off between CPU time and statistical 
robustness of the proposed diagnostics. 

The selected cycles correspond to periods of nominal orbit and nominal 
functioning of the altimeter:

| Mission     | Cycles                          |
|-------------|---------------------------------|
| ERS-1       | 154-92-84-146-148-149-151-98    |
| ERS-2       | 50-82-43-63-45-76-46-36         |
| TOPEX-A1    | 108-112-122-16-22-25-67-73      |
| TOPEX-A2    | 134-143-148-158-198-208-218-221 |
| TOPEX-B     | 246-254-306-328-364-428-444-453 |
| JASON-1E    | 184-79-191-339-96-510-512-253   |
| JASON-2D    | 206-319-179-286-146-3-48-195    |
| JASON-3D    | 74-74-11-46-88-14-26-63         |
| JASON-3F    | 319-325-194-196-348-349-356-357 |
| ENVISAT-V3  | 105-54-77-84-87-89-96-9         |
| SARAL       | 105-21-13-22-100-112-6-103      |
| SENTINEL-3A | 10-27-34-37-49-59-62-65         |
| SENTINEL-3B | 11-21-25-27-31-47-48-51         |
| SENTINEL-6A | 11-12-17-21-25-27-31-47         |

## Methodology

## Resulting LUTs

Below, the average LUT estimated for each mission :

![LUT_average_ERS-1-REAPER.png](../images/LUT_average_ERS-1-REAPER.png)
![LUT_average_ERS-2-REAPER.png](../images/LUT_average_ERS-2-REAPER.png)
![LUT_average_TOPEXF_TOPEX_A1.png](../images/LUT_average_TOPEXF_TOPEX_A1.png)
![LUT_average_TOPEXF_TOPEX_A2.png](../images/LUT_average_TOPEXF_TOPEX_A2.png)
![LUT_average_TOPEXF_TOPEX_B.png](../images/LUT_average_TOPEXF_TOPEX_B.png)
![LUT_average_JASON-1E.png](../images/LUT_average_JASON-1E.png)
![LUT_average_JASON-2D.png](../images/LUT_average_JASON-2D.png)
![LUT_average_JASON-3D.png](../images/LUT_average_JASON-3D.png)
![LUT_average_JASON-3F.png](../images/LUT_average_JASON-3F.png)
![LUT_average_ENVISAT-V3.png](../images/LUT_average_ENVISAT-V3.png)
![LUT_average_SARALF.png](../images/LUT_average_SARALF.png)
![LUT_average_SENTINEL-3A.png](../images/LUT_average_SENTINEL-3A.png)
![LUT_average_SENTINEL-3B.png](../images/LUT_average_SENTINEL-3B.png)
![LUT_average_SENTINEL-6A_f08.png](../images/LUT_average_SENTINEL-6A_f08.png)