access icon free Imaging algorithm for circular trace scanning synthetic aperture radar using modified hyperbolic range equation

For a circular trace scanning synthetic aperture radar (CTSSAR) system, the conventional quadratic range approximation method becomes inefficient when the squint angle exists and the integrated aperture is long. To improve the accuracy in the approximation of the range history for CTSSAR, a modified hyperbolic range equation is introduced to derive the corresponding two-dimensional spectrum and further develop the imaging algorithm for CTSSAR. Promising results prove the effectiveness of the proposed method.

Inspec keywords: radar imaging; approximation theory; synthetic aperture radar

Other keywords: squint angle exists; modified hyperbolic range equation; circular trace scanning synthetic aperture radar; conventional quadratic range approximation method; two-dimensional spectrum; CTSSAR; imaging algorithm

Subjects: Radar equipment, systems and applications; Optical, image and video signal processing

References

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