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Full catalog/NISAR_ANC_AUX
NISAR_ANC_AUX·v1·dataset

Helper reference files for the NISAR radar mission

NISAR Ancillary and Auxiliary Data
land NASA ASF Level Not Provided active XMLCSVGeoPackageHDF5
In plain English

What it measures. A collection of supporting reference files for the NISAR radar mission, including things like instrument calibration files, antenna patterns, ground-target reflector locations, and lookup tables. These are technical helpers, not Earth measurements.

How it's made. Produced a limited number of times by the NASA-ISRO NISAR mission team to support processing of the satellite's radar data.

How & where you'd use it. A behind-the-scenes input used in producing and calibrating NISAR's main data products, rather than something most people would use directly.

What's measured

SPECTRAL/ENGINEERING › RADAR

Coverage & cadence

  • Time span2022-01-01 → ongoing
  • Measured byNISAR (L-SAR)
  • Processing levelLevel Not Provided
  • Spatial extent-180, -90, 180, 90
  • FormatsXML, CSV, GeoPackage, HDF5, YAML
  • StatusACTIVE

What you can do with it

  • Track deforestation, fire scars and land-cover change
  • Monitor crop and vegetation health (NDVI/EVI)
  • Map how built-up vs. green an area is over time
Official description

The NASA-ISRO Synthetic Aperture Radar (NISAR) Ancilliary and Auxiallry collection contains products that are supplementary information for the NISAR mission and are created a limited number of times. The collection contains Time Series Ratio (TSR_STATIC), Physical Model Inversion (PMI_STATIC), Corner Reflector locations (CORNER_REFL), Combined ADT Flight Table (INT_CAL), LSAR Calibration File (EXT_CAL), Flight Table Waveform (FT_WAVEFORM), Flight Table Parameters (FT_PARAM), Antenna Pattern (ANTPAT), Block Floating Point Quantization Look-up Table (BFPQ), Track Frame Database (TFDB), L-SAR Channel Data (L_CHAN_DATA), Soil Moisture Static File (SM_STATIC), and Disaggregation File (DSG_STATIC).

Get the data

nisar_anc_aux_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="NISAR_ANC_AUX",
    version="1",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from ASF
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.