Abstract:

In order to compensate the translational motion and extract the micro-Doppler (m-D) feature of the space spinning targets, a novel method based on the delayed conjugated multiplication and m-D compensation is put forward. The translational acceleration is estimated by the delayed conjugated multiplication processing. A set of m-D basis-signals are generated by discretizing the m-D parameter domain. Thus after acceleration compensation processing, the echo is compensated by the m-D basis-signals. The m-D feature and residual velocity can be achieved by searching the maximum spectral-peak. Finally, the simulations demonstrate the proposed method can estimate the motion parameters effectively and extract the m-D feature quickly.

Key words:  Spinning target, Translation compensation, Delayed conjugated multiplication, Micro-motion decomposition