Modeling and Simulation of Synthetic Aperture Radar (SAR) in Capsim Block Diagram Modelling and Simulation Tool. Papers on SAR Image Formation (LaTex)
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Instructions for Running Capsim® SAR Block Diagram Simulation.
Item |
Description | Author | Date | Link |
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1 |
Synthetic Aperture Radar Point Target Response | Sasan Ardalan | 1987-2006 |  |
2 |
Synthetic Aperture Radar Simplified | Sasan Ardalan | 1987-2006 | |
3 |
Key Paper Image formation from spaceborne synthetic aperture | McDonough R.N., et. al. | 1985 APL Technical Digest Vol. 6, No. 4 pp 300-312. | |
4 |
This is a comprehensive step by step tutorial on Synthetic Aperture Radar (SAR). The algorithms for computing the point target response in Synthetic Aperture Radar (SAR) will be presented. The target modeling and simulations will be performed following the procedure developed by Mc-Donough, et. al. (1985) [1] for SEASAT. In addition, the tutorial will focus on the geometry of SAR and the detailed system viewpoint of the SAR antenna, radar footprint in range and azimuth ( along satellite track) and derivation of both range and azimuth resolutions. SAR images will be presented and the image of point targets, after SAR Digital Signal Processing (DSP), are provided. Both range and azimuth compression are covered. | Sasan Ardalan | January 2026 |  |
SEASAT SAR Image Los Angeles (JPL)
Item |
Block Name |
Description |
Source Code |
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1 |
img_sar_create |
Create SAR image from parameters |
CAPSIM_PATH/BLOCKS/img_sar_create.s |
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2 |
img_sar_range_compress |
Compress SAR image in range |
CAPSIM_PATH/BLOCKS/img_sar_range_compress.s |
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3 |
img_sar_azimuth_compress |
Azimuth compression SAR Image Formation |
CAPSIM_PATH/BLOCKS/img_sar_azimuth_compress.s |
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4 |
imgshrink |
This block inputs an image and decimates it. |
CAPSIM_PATH/BLOCKS/imgshrink.s |
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5 |
imgnormalize |
Input an image and normalize to range 0-255 and output |
CAPSIM_PATH/BLOCKS/imgnormalize.s |
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6 |
imgwrtiff |
Writes an input image to a TIFF file as 8 bit samples. Also store the current colormap |
CAPSIM_PATH/BLOCKS/imgwrtiff.s |
Obtain the Capsim® Text Mode Kernel (CapsimTMK) for Linux from:
GitHub Capsim Text Mode Repository 
CapsimTMK is distributed with all the blocks that are needed for modeling and simulating Synthetic Aperture Radar.
This Repository contains the Topologies for SAR.
Note: Follow the Getting Started Guidelines in the CapsimTMK Repository.
Once CapsimTMK is installed just run 'make' in this directory (in the SAR repository): SAR_CapsimTMK_Project
Then change to the directory 'Topologies' and run:
../capsim sar_image_formation_5.t
The new image files created will be listed in the console.
For the Capsim Block Diagram and List of Blocks click here.
Raw SAR SEASAT Image for Point Target created by Capsim® SAR Block img_sar_create.s
Capsim® SAR Image Formation Point Target (SEASAT)