| Probability density function | |
| PF | Particle filter |
| EKF | Extended Kalman filter |
| UKF | Unscented Kalman filter |
| EM | Expectation-Maximization |
| SMC | Sequential Monte Carlo |
| SIR | Sequential importance resampling |
| LL | Log-Likelihood |
| CKF-RD | Cubature Kalman filter for randomly delayed measurements |
| PF-MD(IL) | Particle filter for multiple delayed measurements with incorrect latency |
| PF-MD(TL) | Particle filter for multiple delayed measurements with true latency |
| RMSE | Root mean square error |
| BOT | Bearing-only tracking |
| i.i.d. | Independently and identically distributed |
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