Horizon distance - how far a radar or an observer can see - as a function of antenna/eye height.
Formula
$$ d_\text{radar} \approx 2.23 \sqrt{h}, \quad d_\text{optical} \approx 2.072 \sqrt{h} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $h$ | Height above sea level | m | ship layout |
| $d$ | Horizon distance | nm | result |
Sources
- IEC 62388 - Radar performance.
- Bowditch Ch.13.