Comparison of the synthetic aperture radar imaging algorithms

Abstract

In this study, the performances of the matched filter, back-projection and w-k algorithms used in the reconstruction of the synthetic aperture radar images are compared. In the comparison, the parameters such as resolution, processing time, signal-to-noise ratio, signal-to-clutter ratio and integrated side lobe ratio are considered. The reconstruction algorithms are applied to both simulation data and real ground-based synthetic aperture radar data measured in 14-18 GHz band. The obtained results provide comparative data on which technique is more useful for the desired purpose.

Keywords

• Remote sensing,Ground-Based SAR,Matched Filter Algorithm,Back projection Algorithm,w-k algorithm

Yapay açıklıklı radar görüntüleme algoritmalarının karşılaştırılması

Öz

Bu çalışmada yapay açıklıklı radar görüntülerinin oluşturulmasında kullanılan yöntemlerden, Uyumlanmış Filtre, Geriye-İzdüşüm ve w-k algoritmalarının görüntü oluşturmadaki performansları karşılaştırılmıştır. Kıyaslamada çözünürlük,  işlem süresi, sinyal-gürültü oranı, sinyal-karışıklık oranı ve tümleşik yan lop oranı gibi parametreler dikkate alınmıştır. Algoritmalar hem benzetim verilerine hem de 14- 18 GHz bandında ölçülen gerçek yer-bazlı yapay açıklıklı radar verilerine uygulanmıştır. Elde edilen sonuçlar, hangi tekniğin amaçlanan hedef için daha yararlı olduğu konusunda karşılaştırmalı veriler sağlamaktadır.

Anahtar Kelimeler

• Uzaktan Algılama,Yer-Bazlı Yapay Açıklıklı Radar,Uyumlanmış Filtre Algoritması,Geriye İzdüşüm Algoritması,w-k Algoritması

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