Laser & Optoelectronics Progress, Volume. 58, Issue 14, 1410013(2021)
Synthetic Aperture Radar Image Target Recognition Based on Updated Classifier
Figures & Tables(13)
Fig. 2. Flow chart of the SAR image target recognition based on updated classifier
Fig. 3. Target images in the MSTAR data set. (a) BMP2; (b) BTR70; (c) T72; (d) T62; (e) BRDM2; (f) BTR60; (g) ZSU23/4; (h) D7; (i) ZIL131; (j) 2S1
Table 1. Test scenarios for standard operating conditions
View tableTable 1. Test scenarios for standard operating conditions
Class Training (17°) Test (15°) Configuration Number of samples Configuration Number of samples BMP2 9563 233 9563 9566 c21 195 196 196 BTR70 -- 233 -- 196 T72 132 232 132 812 S7 196 195 191 T62 -- 299 -- 273 BRDM2 -- 298 -- 274 BTR60 -- 256 -- 195 ZSU23/4 -- 299 -- 274 D7 -- 299 -- 274 ZIL131 -- 299 -- 274 2S1 -- 299 -- 274
Table 2. Classification results of different methods under standard operating conditions unit: %
View tableTable 2. Classification results of different methods under standard operating conditions unit: %
Method Average recognition rate Ours 99.08 SRC 96.42 A-ConvNet 98.53 Aug-CNN 98.91 SVM+SRC 97.48
Table 3. Classification results of our method under different decision reliability thresholds unit: %
View tableTable 3. Classification results of our method under different decision reliability thresholds unit: %
Threshold 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Average recognition rate 98.62 98.86 99.02 99.08 99.03 98.79 98.54
Table 4. Decision variable distribution of BMP2 test sample
View tableTable 4. Decision variable distribution of BMP2 test sample
Class 1 2 3 4 5 6 7 8 9 10 Decision value 1 0.28 0.05 0.32 0.04 0.10 0.04 0.01 0.06 0.05 0.05 Decision value 2 0.36 0.07 0.18 0.06 0.08 0.07 0.02 0.05 0.07 0.04 Fused decision value 0.32 0.06 0.25 0.05 0.05 0.06 0.02 0.06 0.06 0.05
Table 5. Average recognition rates of different test subsets unit: %
View tableTable 5. Average recognition rates of different test subsets unit: %
Test subset Part 1 Part 2 Part 3 Part 4 All Average recognition rate 69.32 75.45 85.64 89.12 79.86
Table 6. Test conditions for pitch angle difference
View tableTable 6. Test conditions for pitch angle difference
Class Training Test Depression Number of samples Depression Number of samples 2S1 17° 299 30° 45° 288 303 BDRM2 17° 298 30° 45° 287 303 ZSU23/4 17° 299 30° 45° 288 303
Table 7. Test results under different pitch angles unit: %
View tableTable 7. Test results under different pitch angles unit: %
Method Depression 30° 45° Ours 96.12 72.74 SRC 92.17 64.38 A-ConvNet 94.12 65.93 Aug-CNN 95.38 69.32 SVM+SRC 94.16 66.08
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Zhenzhong Zhang. Synthetic Aperture Radar Image Target Recognition Based on Updated Classifier[J]. Laser & Optoelectronics Progress, 2021, 58(14): 1410013
Paper Information
Category: Image Processing
Received: Sep. 23, 2020
Accepted: Nov. 14, 2020
Published Online: Jun. 30, 2021
The Author Email: Zhenzhong Zhang (wjzhangzhenzhong@163.com)
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