United States Naval Research Laboratory
Bio-Optical/Physical Processes and Remote Sensing Section
3D Remote Sensing with a Multiple-Band Active and Passive System: Theoretical Basis
Objective:
This project investigates the light characteristics of both (LIDAR) and passive returns of the same stratified marine environment. The Monte Carlo method will be used to simulate active (LIDAR) returns, while HYDROLIGHT will be used to simulate passive returns. From such simulation activities, we will have a data source with wide dynamic range, which will then enable us to have a solid understanding regarding the active and passive light field and their spectral variations. It will allow us to build a solid link between the properties of the active source and the properties of the passive source. Such an understanding is crucial for the development of revolutionary system/algorithms in the future to remotely measure the 3-D distribution of the optical and biogeochemical properties of the upper water column. We will also explore relationships between coincident active and passive remote sensing signals and in situ optical measurements, using existing and planned data collections. The accurate derivation of both the horizontal and vertical distribution of water optical and biogeochemical properties is the emerging frontier of remote sensing research and development. To meet this challenge, this project will focus on better understanding the optical responses of a stratified water environment when illuminated by an active laser.
