Table 3.
Effective factors influencing bathymetric LIDAR intensity measurements.
| Category | Factor | Description | Related References |
|---|---|---|---|
| Acquisition Geometry | Water Depth (D) | In bathymetric LIDAR, pulse power decays exponentially with the product of water depth and the diffuse attenuation coefficient. | [35,84] |
| Off nadir transmit angle (θ) | Affects the signal return due to pulse stretching and retro-reflectance of the surface material. | [83,84] | |
| Receiver field of view loss factor (Fp) | Loss factor due to a receiver FOV is insufficient to accommodate the spreading of the pulse in the water column. | [82,87] | |
| Aircraft altitude (H), refracted beam angle (Φ), effective area of receiver optics (Ar) | Other acquisition geometry factors which have an effect on the return power as shown in the bathymetric LIDAR equation (Equation (4)). | [82,85] | |
| Diffuse Attenuation Coefficient (K) | Light traveling through the water column is exponentially attenuated, due to absorption and scattering by particles in the water. | [83,84,86] | |
| Pulse stretching factor (n) | Stretching of the pulse due to acquisition geometry and scattering properties of the water. | [84,85] |