|
|
| Angle Motion Parameters Estimation Based on
Inverse Synthetic Aperture Radar Imaging for Difference Beam Li Qiang£¬Zhang Shouhong£¬Zhang Huanying£¬Wang Jun (National Laboratory for Radar Signal Processing£¬Xidian¡¡University£¬Xi'an 710071£¬China) Abstract£ºAiming at the problem of angle motion estimation in monopulse threeª²dimension
imaging£¬a novel angle motion parameters estimation method based on the inverse synthetic
aperture radar imaging for difference beam is presented£® Using the relation between
spectrum width and entropy and the different contributions devoted by each angle motion
parameter to the echo spectrum width of the difference beam£¬ the global optimal
estimation is obtained through searching the angle motion parameters of zero and higher
order via maxª²entropy and minª²entropy respectively£® Compared to the conventional
amplitudeª²comparison angular estimation method£¬ the proposed method can suppress the
angle glint better since the angle motion parameter of target is obtained by global
searching£® Simulations show that the average error of the proposed method is reduced 72%
of the traditional method£® |
|
