1. Introduction
2. Existing studies on radio wave propagation in curved tunnels
3. Developed method
3.1. Ray Launching principle
3.2. Intersection between the transmitted rays and the environment
3.3. Optimization
3.4. Electric field calculation
4. Comparisons with existing results
5. Comparisons with measurements
5.1. Trial conditions
5.2. Simulation results
5.3. 2-Slope model
6. Statistical analysis of simulations in a curved rectangular tunnel
Global | Zone 1 | Zone 2 | |
---|---|---|---|
Rayleigh | |||
KS
| 0.25 | 0.28 | 0.24 |
σ | 3.50 | 3.48 | 3.50 |
Rice | |||
KS
| 0.25 | 0.28 | 0.24 |
K
| 0 | 0 | 0 |
σ | 3.50 | 3.48 | 3.50 |
Nakagami | |||
KS
| 0.08 | 0.09 | 0.08 |
m
| 0.40 | 0.38 | 0.40 |
ω
| 24.49 | 24.22 | 24.51 |
Weibull | |||
KS
| 0.03 | 0.04 | 0.03 |
k
| 3.65 | 3.53 | 3.66 |
l
| 1.09 | 1.05 | 1.09 |