Besides, the bubble density and reflectance increased with the wake observation position approaching the target ship.
同时，随着观测点在尾迹中的位置距目标船的接近，气泡密度不断增大，反射率也随之增强。
2
Bidirectional reflectance distribution function (BRDF) models treat plant density and optical properties differently and, therefore, can help to assess plant condition objectively.