Focused ISAR Imaging of Rotating Target in Far-Field Compact Range Anechoic Chamber

Document Type : Original Article

Authors

1 School of Electronics & Information Processing, Northwestern Polytechnical University, Xi’an, Shaanxi, China.

2 Professor, School of Electronics & Information Processing, Northwestern Polytechnical University , Xi’an, Shaanxi, China.

3 Egyptian Armed Forces.

Abstract

A case study of a modified Inverse Synthetic Aperture Radar (ISAR) imaging technique for different target geometries in the Far Field RCS measurement Compact Range is presented. The processing applied to the experimental data is a combination of two high resolution processes: dev of High Range Resolution profile (HRR) in the down range using stepped frequency waveform covering a total band of 4GHz, and the development of high resolution profile in cross-range is achieved using ISAR technique. The manuscript shows the use of Polar reformatting algorithm with Shannon reconstruction technique for correcting migration through resolution cells to obtain a better focused image of rotating targets.

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