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Advanced Signal Processing Lab.

Radar Signal Processing

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What is SAR?

Environmental monitoring, earth-resource mapping, and military systems require broad-area imaging at high resolutions. Many times the imagery must be acquired in inclement weather or during night as well as day. Synthetic Aperture Radar (SAR) provides such a capability. SAR systems take advantage of the long-range propagation characteristics of radar signals and the complex information processing capability of modern digital electronics to provide high resolution imagery. Synthetic aperture radar complements photographic and other optical imaging capabilities because of the minimum constraints on time-of-day and atmospheric conditions and because of the unique responses of terrain and cultural targets to radar frequencies.

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Stereo SAR

Stereo SAR processing is deriving Digital Elevation Maps (DEMs) and orthorectified images from stereo SAR images, these process need matching and Range/Doppler equation. The Range/Doppler solution provides maps with high absolute accuracy with little or no ground control.

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ATR

Automatic Target Recognition (ATR) is the process of using a computer to assist in the process of identifying which features of a scene indicate the presence of a target.
ATR systems can be used to cue human operators to regions of interest? reducing the time required for the analysts to review each image. More complete ATR systems which include an identification algorithm can fully identify and locate targets without human intervention and with low false alarm rates.

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Stereo SAR Project

* Propose

Stereo-SAR : Deriving DEM form given two SAR-images
DEM : Digital Elevation Model
SAR : Synthetic Aperture Radar

* Intro & Background

* Intro & Background

* Matching & Range/Dopplor Eq.

* Matching & Range/Dopplor Eq.

* Stereo-SAR system Block Diagram

Stereo-SAR system Block Diagram

* Stereo-SAR system’s Result

Stereo-SAR system’s Result

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SAR-ATR Project

SAR-ATR : Automatic Target Recognition using SAR image


* SAR-ATR system Block Diagram

SAR-ATR system Block Diagram


* Image Region Segmentation

Image Region Segmentation


* Target Image Detection

Target Image Detection


* Chip Image Matching & Recognition

Chip Image Matching & Recognition