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Scaling the 3-D Image of Spinning Space Debris via Bistatic Inverse Synthetic Aperture Radar

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4 Author(s)
Xueru Bai ; State Key Laboratory for Radar Signal Processing, Xidian University, Xi'an , China ; Feng Zhou ; Mengdao Xing ; Zheng Bao

In 3-D inverse synthetic aperture radar (ISAR) imaging of spinning space debris, the image obtained via the available algorithm is modified by a scaling factor. Determined by the angle between the spinning vector and the radar line of sight, this factor cannot be estimated by a monostatic radar in a short imaging interval. This letter derives the bistatic ISAR (Bi-ISAR) geometry and signal model for 3-D imaging of space debris. Then, a 3-D image scaling algorithm is introduced based on the connections between the mono- and bistatic echoes of the same scatterer. Numeric simulations have proved the validity of the proposed algorithm.

Published in:

IEEE Geoscience and Remote Sensing Letters  (Volume:7 ,  Issue: 3 )