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Uniform rotational motion compensation for inverse synthetic aperture radar with non-cooperative targets

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2 Author(s)
Munoz-Ferreras, J.M. ; Dept. de Sehales, Univ. Politec. de Madrid, Madrid ; Perez-Martfnez, F.

In the current scenario of high-range resolution radars, the rotational motion of the target usually generates migration through resolution cells (MTRC) in the inverse synthetic aperture radar (ISAR) images. A technique to correct the MTRC in the case of uniform rotation rate is proposed. An estimation of the rotation vector of the non-cooperative targets is not required. The approach compensates the rotational motion in two steps: the slant-range rotation compensation (SRRC) and the cross-range rotation compensation (CRRC). CRRC is based on an extension of phase difference (PD) and on a robust method to delete outliers. The technique is verified both with simulated and live data from a millimetre-wave linear frequency-modulated continuous wave radar. A comparison with a minimum entropy-based technique is also made.

Published in:

Radar, Sonar & Navigation, IET  (Volume:2 ,  Issue: 1 )