1 Introduction
2 Signal model
2.1 Polarization sensitive array
2.2 Spatial polarimetric time-frequency distributions
3 Spatial polarimetric time-frequency DOA estimation algorithm
3.1 Polarimetric time-frequency MUSIC
3.2 Polarimetric time-frequency ESPRIT
3.3 Improved algorithm
4 Simulation results
4.1 Polarimetric time-frequency MUSIC
4.1.1 Experiment 1: TF MUSIC vs PTF MUSIC
4.1.2 Experiment 2: estimated accuracy of TF MUSIC vs PTF MUSIC
4.2 Polarimetric time-frequency ESPRIT
4.2.1 Experiment 3: TF ESPRIT vs PTF ESPRIT
Signal | TF-ESPRIT (°) | PTF-ESPRIT(°) |
---|---|---|
Signal 1 | − 26.8481 | − 3.0058 |
Signal 2 | 1.6727 | 3.0129 |
4.2.2 Experiment 4: PTF ESPRIT vs PTF MUSIC
Algorithm | Time (s) | Time of algorithm (s) |
---|---|---|
TF transformation | 434.5292 | 434.5292 |
PTF ESPRIT | 453.4780 | 18.95 |
PTF MUSIC | 540.3157 | 105.7865 |
4.3 Improved algorithm
Algorithm | Time (s) | Time of algorithm (s) |
---|---|---|
PTF transformation | 43.8828 | 43.8828 |
PTF MUSIC | 138.7203 | 94.8195 |
PTF ESPRIT | 47.1496 | 3.2668 |
Improved algorithm | 48.8823 | 4.9995 |