Digital Processing Of Synthetic Aperture Radar Data Pdf

After RCMC, the signal appears as a linear frequency modulated (LFM) chirp in the azimuth direction. Azimuth compression applies a matched filter matched to the Doppler history of the targets. The azimuth resolution is ( \delta_a = L_a / 2 ), where ( L_a ) is the real antenna length – a remarkable result independent of range.

The azimuth FM rate (K a ) determines the rate of change of Doppler frequency over the synthetic aperture. Errors in K a result in of the SAR image. Chapter 13 covers autofocus techniques such as the map drift algorithm , which estimates the FM rate by correlating subaperture images. digital processing of synthetic aperture radar data pdf

Once the Single Look Complex (SLC) image is formed, further digital processing is required to make the image analytically viable. Speckle Noise Reduction After RCMC, the signal appears as a linear