Table 8 The signal-to-noise ratio of a single signal is improved after PCA noise reduction
Signal | NS | BPSK | QPSK | 2FSK | LFM |
|---|---|---|---|---|---|
Reconstruction degree = 98% | 0.5–2.0 | 0.5–2.1 | 0.6–2.2 | 0.6–2.2 | 0.8–2.3 |
Reconstruction degree = 94% | 1.3–3.1 | 1.5–3.5 | 1.5–3.6 | 2.0–3.8 | 1.8–3.7 |
Reconstruction degree = 90% | 2.3–4.7 | 3.1–5.2 | 3.2–5.3 | 2.5–4.5 | 2.4–4.8 |
Reconstruction degree = 86% | 2.5–4.4 | 3.5–5.1 | 3.1–5.2 | 2.7–4.3 | 2.3–4.6 |