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| Research on the Motion Compensation of the Ballistic Target’s High Resolution Range Profile |
| Cao Min; Fu Yao-wen; Huang Ya-jing; Li Xiang; Zhuang Zhao-wen |
| College of Electronic Science and Engineering, NUDT, Changsha 410073, China |
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Abstract The motion of the ballistic target in midcourse is very complex, which has high flight speed and micro-motion such as spin, precession and tumble. According to its complex motion, wideband radar echo model after dechirping is firstly built. Then the influence of the high speed motion and micro-motion on the High Resolution Range Profile (HRRP) of the ballistic target is quantitatively analyzed. In order to improve the quality of the ballistic target’s HRRP, a new motion compensation algorithm is proposed. The basic idea is to estimate velocity through Doppler tracking to a scatter, and the Doppler tracking is performed via an Adaptive Joint Time-Frequency (AJTF) technique and Particle Swarm Optimization (PSO) algorithm. Simulations show that the distorted HRRP can be corrected effectively by the proposed method which has a high estimate accuracy, low computational cost and good robust property.
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Received: 22 October 2007
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2009, Vol. 31 
