SPECAN (Spectral Analysis) uses a deramping (deskew) approach in the azimuth direction, converting the azimuth chirp into a sinusoidal signal whose frequency is proportional to the target’s azimuth position. The image is then formed by a simple FFT.
Take the magnitude (or complex envelope) and convert to decibels (dB) for a viewable image.
(like Python) for implementing basic range compression. digital processing of synthetic aperture radar data pdf
After image formation, additional processing may include radiometric calibration, geometric correction (terrain correction to ground range), speckle reduction (multilooking), and geocoding.
Eliminates interpolation during RCMC via scaling phases; uniform precision. Requires data to be entirely linear chirps; complex math. (Wave Number) 2D Frequency Domain (like Python) for implementing basic range compression
SAR images suffer from , a salt-and-pepper grain effect caused by constructive and destructive interference of the coherent radar waves reflecting off rough surfaces.
Comprehensive Guide to Digital Processing of Synthetic Aperture Radar Data Requires data to be entirely linear chirps; complex math
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Standard radars require large physical antennas for high resolution. SAR bypasses this limitation. It uses platform motion to simulate a massive antenna.