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Parameters of Exterior Ballistic Feature Points Extraction in Radar Measurement Data by EMD |
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| Authors: | Wanjun Zhang Kailin Wang Xiaoying Wu Guohui Li Hongtian Liu |
| Affiliation: | Department of Arms Engineering, Academy of Army Armored Forces, Beijing 100072, China,Department of Arms Engineering, Academy of Army Armored Forces, Beijing 100072, China,Department of Arms Engineering, Academy of Army Armored Forces, Beijing 100072, China,Department of Arms Engineering, Academy of Army Armored Forces, Beijing 100072, China and Department of Arms Engineering, Academy of Army Armored Forces, Beijing 100072, China |
| Abstract: | The problem of measuring exterior ballistic feature points is always difficult to solve and it is essentiale on exterior ballistic measurement. By analysis of radar reflection characteristics and non-stationary echo signals of exterior ballistic feature points, the echo data of exterior ballistic feature points is measured by using the continuous wave radar. The parameters of feature points are extracted by the empirical mode decomposition method (EMD) of Hilbert-Huang transform (HHT) spectrum analysis technique. The radar echo signal model and EMD extraction model are established to analyze the exterior ballistic mutation point detection and EMD extraction method of aliasing echo signal. Typical feature point parameters of exterior ballistic in rocket flight tests are carried out and the effectiveness of the method is verified. A new method of measuring the parameters of exterior ballistic feature point is therefore presented. |
| Keywords: | exterior ballistic characteristic points empirical mode decomposition method (EMD) continuous wave radar information extraction |
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