SNAP Data Processors - Radiance-to-Reflectance Processor - Processor Description |

### Processor Description

#### I/O Parameters Tab

##### Source Product Group

Name: Used to select the spectral source product. The source product shall contain spectral bands providing a source spectrum at each pixel. Use the ... button to open a data product currently not opened in the application.

##### Target Product Group

Name: Used to specify the name of the target product.

Save to: Used to specify whether the target product should be saved to the file system. The combo box presents a list of file formats.

Open in SNAP: Used to specify whether the target product should be opened in the application. When the target product is not saved, it is opened automatically.

### The Processing Parameters

Sensor:
The corresponding sensor. The processor currently supports OLCI, SLSTR and MERIS. The sensor must be selected from the drop-down menu. The default sensor is 'OLCI'.

Conversion mode:
Specifies if the conversion shall be from radiances to reflectances or backwards. The conversion mode has one of the values 'RAD_TO_REFL', 'REFL_TO_RAD' and must be selected from the drop-down menu. The default conversion mode is 'RAD_TO_REFL'. The 'REFL_TO_RAD' mode is likely a rare use case and only supports input products which were generated with this processor using the 'RAD_TO_REFL' mode and which contain all tie point grids, flag bands and non-spectral bands from the original L1 product.

Copy tie point grids:
If set, all tie point grids from the source product are written to target product. The default value is 'false'.

Copy flag bands and masks:
If set, all flag bands and masks from the source product are written to target product. The default value is 'false'.

Copy non spectral bands:
If set, all other non-spectral bands from the source product are written to target product. The default value is 'false'.

Note that writing these optional outputs might be time consuming i.e. in case of large OLCI or SLSTR products.