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| Micro-motion Parameters Estimation of Space Precession Targets |
| Guan Yong-sheng①② Zuo Qun-sheng③ Liu Hong-wei① Du Lan① Li Yan-bing① |
①(National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China)
②(School of Telecommunications Engineering, Xidian University, Xi’an 710071, China)
③(China Electronics Technology Group Corporation, Beijing 100846, China) |
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Abstract A new method is proposed to estimate micro-motion parameters of space precession targets. Based on the micro-Doppler characteristic of a precession target, the Fourier transformation is applied to estimate precession parameters roughly. Then based on the time-frequency spectrum characteristic of the echo signal, coherent accumulation is applied to obtain a 3-D high resolution distribution of the target. The estimation accuracy of the parameters is refined by calculating the whole image entropy. Simulations results confirm the effectiveness of our proposed method.
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Received: 17 February 2011
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Corresponding Authors:
Guan Yong-sheng
E-mail: ysguan1213@163.com
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2011, Vol. 33 
