Figure 8
From: Multi-task hidden Markov modeling of spectrogram feature from radar high-resolution range profiles
The hidden state distributions for all the three plane targets with 128 × 135 training data, generated via a run of the MTL TSB-HMM with spectrogram feature. In this example, the state truncation level of I = 60 is employed for each plane. For each plane, 60 hidden states are shared across all aspect-frames, and 46, 48, and 49 meaningful states are inferred for Yark-42, Cessna Citation S/II, and An-26, respectively.