Table 3 Typical pulse coding schemes and experimental results
From: Physics and applications of Raman distributed optical fiber sensing
Schemes | Sensing distance | Temperat-ure accuracy | Figures of merit |
|---|---|---|---|
255-bit Simplex Coded87 | 19.5 km | 3.0 °C | 6.5 |
Low-Repetition-Rate Cyclic Pulse Coding85 | 26.0 km | 3.0 °C | 8.66 |
Cyclic Pseudo-Random Sequence Coding89 | 1.0 km | 1.5 °C | 0.66 |
Pre-Shaped Simplex Code90 | 50.0 km | 9.0 °C | 5.55 |
Improved Simplex Coding91 | 1.0 km | 0.1 °C | 10 |
Genetic-Optimized Aperiodic Code92 | 39.0 km | 3.9 °C | 10 |
