Micro-Motion Parameter Extraction for Ballistic Missile with Wideband Radar Using Improved Ensemble EMD Method
Abstract
:1. Introduction
2. Geometry and Signal Model
2.1. Warhead Motion
2.2. Radar Echoes
3. Micro-Motion Parameter Estimation
3.1. Scattering Point Separation
3.2. Micro-Curve Extraction
3.3. Micro-Motion Parameter Estimation
3.3.1. Precession Frequency Estimation
3.3.2. Precession Angle Estimation
3.3.3. Half-Cone Angle and Length of Busbar Estimation
3.3.4. Cone Height and Base Radius Estimation
4. Simulations and Discussion
4.1. Scattering Point Separation
4.2. Micro-Curve Extraction
4.3. Parameters Estimation
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameters | Values | |
---|---|---|
warhead | cone height H | 0.96 m |
distance between the mass center and the cone top h | 0.64 m | |
base radius of cone r | 0.25 m | |
spin frequency | 4 Hz | |
conic rotation frequency | 2 Hz | |
precession angle | ||
radar | carrier Frequency | 10 GHz |
bandwidth B | 2 GHz | |
pulse width | 10 us | |
pulse repetition period | 1 kHz | |
dwell time T | 1 s |
SNR (dB) | Methods | P | s | H | r | ||
---|---|---|---|---|---|---|---|
30 | EEMDCAN | 0 | 0.88 | 0.85 | 1.69 | 1.34 | 0.79 |
EMD | 0 | 2.63 | 3.46 | 2.67 | 2.36 | 2.80 | |
25 | EEMDCAN | 0 | 0.90 | 0.86 | 1.69 | 1.75 | 0.84 |
EMD | 0 | 2.65 | 3.38 | 2.80 | 2.80 | 3.15 | |
20 | EEMDCAN | 0 | 0.89 | 0.83 | 1.67 | 1.72 | 0.83 |
EMD | 0 | 2.64 | 3.71 | 3.74 | 3.18 | 3.23 | |
15 | EEMDCAN | 0 | 0.90 | 0.88 | 0.17 | 1.74 | 0.81 |
EMD | 0 | 5.90 | 5.32 | 3.91 | 4.04 | 3.68 | |
10 | EEMDCAN | 0 | 0.91 | 0.79 | 1.64 | 1.34 | 0.84 |
EMD | 0 | 7.50 | 5.98 | 3.09 | 4.31 | 3.76 | |
5 | EEMDCAN | 0 | 1.15 | 3.78 | 0.10 | 0.16 | 3.12 |
EMD | 0 | 8.23 | 5.87 | 5.45 | 6.45 | 4.84 | |
0 | EEMDCAN | 0 | 1.41 | 5.40 | 2.55 | 2.94 | 1.54 |
EMD | 0 | 10.65 | 12.34 | 9.91 | 9.41 | 11.34 | |
−5 | EEMDCAN | 0 | 2.81 | 30.76 | 10.62 | 12.76 | 15.39 |
EMD | 0 | 11.20 | 40.35 | 13.35 | 16.13 | 16.19 | |
−10 | EEMDCAN | 0 | 2.21 | 33.56 | 8.01 | 10.29 | 21.15 |
EMD | 0 | 11.34 | 42.46 | 23.28 | 21.11 | 24.32 |
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Zhu, N.; Hu, J.; Xu, S.; Wu, W.; Zhang, Y.; Chen, Z. Micro-Motion Parameter Extraction for Ballistic Missile with Wideband Radar Using Improved Ensemble EMD Method. Remote Sens. 2021, 13, 3545. https://doi.org/10.3390/rs13173545
Zhu N, Hu J, Xu S, Wu W, Zhang Y, Chen Z. Micro-Motion Parameter Extraction for Ballistic Missile with Wideband Radar Using Improved Ensemble EMD Method. Remote Sensing. 2021; 13(17):3545. https://doi.org/10.3390/rs13173545
Chicago/Turabian StyleZhu, Nannan, Jun Hu, Shiyou Xu, Wenzhen Wu, Yunfan Zhang, and Zengping Chen. 2021. "Micro-Motion Parameter Extraction for Ballistic Missile with Wideband Radar Using Improved Ensemble EMD Method" Remote Sensing 13, no. 17: 3545. https://doi.org/10.3390/rs13173545