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ICEYE's User Guide to SNAP

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In this document you will learn the basic SAR processing ICEYE products require.
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1. ICEYE SLC data files are typically provided in which format?
GeoTIFF ENVI(.hdr) NetCDF(.nc) HDF5(.h5)
2. What is the purpose of the “Multilooking” step in SAR processing?
Enhance spatial resolution Improve geometric accuracy Reduce image resolution and speckle variance Reduce speckle noise
3. Which SNAP menu is used to apply Multilooking?
Raster → Image Analysis → Multilooking Radar → SAR Utilities → Multilooking Radar → Radiometric → Multilooking Tools → SAR → Multilooking
4. Which band is typically selected for ICEYE SLC multilooking?
Amplitude_HH Coherence Amplitude_HV Intensity_VV
5. What does the “Subset” operation accomplish?
Filters out noise Converts data to linear scale Reduces image file size and processing time by cropping Adjusts brightness and contrast
6. What process is used for georeferencing ICEYE images in SNAP?
Radiometric Calibration Range-Doppler Terrain Correction Ellipsoid Flattening Geometric Rectification
7. After processing, in which format can the data be exported for use in other GIS platforms?
JPEG GeoTIFF CSV PDF
8. Which menu allows access to ICEYE sensors in SNAP?
Import → SAR Sensors → ICEYE Tools → Sensors → ICEYE Radar → Sensors → Import ICEYE File → Open → ICEYE
9. Which Speckle Filter performs best according to the guide?
Frost Median Gamma MAP Lee Sigma
10. What is the main purpose of Speckle Filtering in GRD processing?
Increase resolution Remove geometric distortions Reduce noise caused by coherent scattering Convert to linear amplitude