Table 2 Confusion matrices and average recognition rates of time domain feature and spectrogram feature based on STL TSB-HMMs with 1,024 training samples per target-aspect frame
From: Multi-task hidden Markov modeling of spectrogram feature from radar high-resolution range profiles
1024 × 135 training samples | Time domain feature | Spectrogram feature | ||||
|---|---|---|---|---|---|---|
| Â | An-26 | Cessna Citation S/II | Yark-42 | An-26 | Cessna Citation S/II | Yark-42 |
An-26 | 90.8 | 9.8 | 3.5 | 97.3 | 1.1 | 1.2 |
Cessna citation S/II | 8.7 | 83.0 | 2.0 | 1.1 | 92.8 | 0.8 |
Yark-42 | 0.5 | 7.2 | 94.5 | 1.6 | 6.1 | 98.0 |
Average recognition rates (%) | 89.4 | 96.0 | ||||