| LPI | Low Probability of Intercept |
| IMM | Interacting Multiple Model |
| EKF | Extended Kalman Filter |
| RNN | Recurrent Neural Network |
| GRU | Gated Recurrent Unit |
| Bi-GRU | Bidirectional Gated Recurrent Unit |
| CA-RTS | Continuous-Acceleration Rauch-Tung-Striebel |
| NIS | Normalized Innovation Squared |
| MRMSE | Multi-Monte-Carlo Mean Root Mean Square Error |
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