Research Article
Time-Frequency Feature Extraction of HRRP Using AGR and NMF for SAR ATR
Table 1
Confusion matrix for 10-target classification (3° aperture).
| | Test targets | Recognized as | Recognition rate (%) | | BMP2 | BRDM2 | BTR60 | BTR70 | D7 | T62 | T72 | ZIL131 | ZSU234 | 2S1 |
| | BMP2 | 168 | 1 | 4 | 2 | 0 | 6 | 12 | 0 | 1 | 1 | 86.15 | | BRDM2 | 5 | 249 | 6 | 8 | 1 | 1 | 2 | 1 | 2 | 1 | 90.87 | | BTR60 | 1 | 3 | 167 | 15 | 0 | 0 | 1 | 1 | 7 | 0 | 85.64 | | BTR70 | 1 | 6 | 22 | 163 | 0 | 2 | 0 | 1 | 0 | 0 | 83.16 | | D7 | 2 | 0 | 1 | 0 | 259 | 4 | 0 | 6 | 1 | 1 | 94.53 | | T62 | 1 | 8 | 3 | 7 | 1 | 233 | 12 | 5 | 2 | 2 | 85.35 | | T72 | 2 | 2 | 5 | 3 | 3 | 1 | 178 | 1 | 1 | 0 | 90.82 | | ZIL131 | 6 | 5 | 3 | 1 | 2 | 1 | 3 | 237 | 11 | 5 | 86.50 | | ZSU234 | 4 | 3 | 5 | 4 | 3 | 7 | 8 | 3 | 235 | 2 | 85.77 | | 2S1 | 5 | 7 | 5 | 3 | 4 | 9 | 6 | 3 | 5 | 230 | 83.94 |
| | Average recognition rate (%) | 87.27 |
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