Algorithm Theoretical Basis Documents¶
Two algorithm theoretical basis documents (ATBDs) summarize how the data is processed at various processing levels:
NISAR L1 and L2 Algorithm Theoretical Basis Document NISAR Algorithm Development Team, 2023
NISAR L3 Soil Moisture Data Product: Algorithm Theoretical Basis Document (ATBD) NISAR Soil Moisture Science Team, 2023
There are other ATBDs summarizing the findings of the NISAR science team regarding how the requirements for generating particular data products are met:
Algorithms to Validate NISAR L2 Coseismic, Transient and Secular Displacement Requirements NISAR Solid Earth Team, 2022
NISAR L3 Ice Sheets and Glacier Products Joughin et al., 2022
NISAR L2 Sea Ice Motion Product Holt, 2022
NISAR Ecosystem L2 Products Siqueira et al., 2018
- NISAR Algorithm Development Team. (2023). NISAR L1 and L2 Algorithm Theoretical Basis Document (Techreport D-95677 (Revision A)). NASA Jet Propulsion Laboratory. https://nisar.asf.earthdatacloud.nasa.gov/NISAR-SAMPLE-DATA/DOCS/NISAR_D-95677_NASA_L1_L2_ATBD_20231112_R3.4_w-sigs.pdf
- NISAR Soil Moisture Science Team. (2023). NISAR L3 Soil Moisture Data Product: Algorithm Theoretical Basis Document (ATBD) (Techreport D-107679 (Revision 3.3)). NASA Jet Propulsion Laboratory. https://nisar.asf.earthdatacloud.nasa.gov/NISAR-SAMPLE-DATA/DOCS/NISAR_D-107679_L3SM_ATBD_R3.3_20230428_w-sigs.pdf
- NISAR Solid Earth Team. (2022). Algorithms to Validate NISAR L2 Coseismic, Transient and Secular Displacement Requirements (Techreport Algorithm Theoretical Basis Document (Revision A)). https://gitlab.com/nisar-science-algorithms/solid-earth/ATBD/-/blob/main/docs/SES_ATBD.pdf
- Joughin, I., Rignot, E., Forster, R., Gardner, A., & Scheuchl, B. (2022). NISAR L3 Ice Sheets and Glacier Products (Techreport Algorithm Theoretical Basis Document (Revision 2.1)). https://gitlab.com/nisar-science-algorithms/cryosphere/land-ice/atbd/documentation/-/blob/main/ATBD_IceSheetVelocity-Version2.1.pdf
- Holt, B. (2022). NISAR L2 Sea Ice Motion Product (Techreport Algorithm Theoretical Basis Document (Revision 4)). https://gitlab.com/nisar-science-algorithms/cryosphere/sea-ice/rgps_calval/-/blob/main/docs/SeaIceMotion_ATBD_V4.docx
- Siqueira, P., Chapman, B., Kelldorfer, J., Saatchi, S., & Simard, M. (2018). NISAR Ecosystem L2 Products (Techreport Algorithm Theoretical Basis Document). https://gitlab.com/nisar-science-algorithms/ecosystems/documentation/-/blob/main/NISAR_Ecosystems_Combined_ATBD.pdf