Range Doppler Algorithm

The Range Doppler Algorithm is a classic SAR (Synthetic Aperture Radar) imaging processing technique that handles both range and azimuth dimensions simultaneously. SAR imaging utilizes radar technology where a synthetic aperture radar system scans targets and collects returned signal data. The algorithm processes this data through several key stages: range compression using matched filtering, range cell migration correction to align target trajectories, and azimuth compression using Doppler frequency analysis. This processing chain generates high-resolution radar images that clearly display target positions and characteristics. In code implementation, this typically involves Fast Fourier Transforms (FFT) for frequency domain operations, convolution operations for matched filtering, and interpolation techniques for migration correction. This imaging method finds extensive applications in remote sensing, military surveillance, and geological exploration due to its ability to produce detailed terrain imagery under various weather conditions.