Digital Processing Of Synthetic Aperture Radar Data Pdf [better] · Must See

Reducing speckle noise by averaging multiple looks of the data. Geocoding/Terrain Correction:

The core of the feature is implementing algorithms that perform two-dimensional convolution of raw radar returns with a matched filter. Johns Hopkins University Applied Physics Laboratory Range Doppler Algorithm (RDA): digital processing of synthetic aperture radar data pdf

Modern SAR systems typically use Linear Frequency Modulation (LFM), known as a "chirp" pulse, to achieve high range resolution. The transmitted signal $s_t(t)$ is defined as: $$ s_t(\tau) = \exp\left(j 2\pi \left( f_c \tau + \frac12 K_r \tau^2 \right) \right) $$ where $\tau$ is the fast time (range time), $f_c$ is the carrier frequency, and $K_r$ is the range chirp rate. A large bandwidth allows for fine range resolution through pulse compression. Reducing speckle noise by averaging multiple looks of