title: Using a multiwavelength LiDAR for improved remote sensing of natural waters.
abstract: This paper describes research to characterize the benefits of a multiwavelength oceanographic LiDAR for various water types. Field measurements were conducted to establish endmembers representative of both typical and extremely challenging natural conditions. Laboratory tests were performed using a prototype multiwavelength LiDAR in water tanks with optical conditions simulating both sediment-laden and biologically rich water types. LiDAR models were used to simulate the LiDAR signal from both field and laboratory experiments. Our measurements and models show that using a laser wavelength of 470-490 nm in the open ocean leads to an improvement factor of 1.50-1.75 compared to a 532 nm system. In more turbid areas using a laser wavelength of 560-580 nm leads to an improvement factor of 1.25. We conclude by demonstrating how using multiple LiDAR wavelengths can help detect and characterize constituents in the water column.
authors.forename: Deric J
authors.initials: DJ
authors.lastname: Gray
authors.forename: John
authors.initials: J
authors.lastname: Anderson
authors.forename: Jean
authors.initials: J
authors.lastname: Nelson
authors.forename: Jarrod
authors.initials: J
authors.lastname: Edwards
mesh_terms: D003124:Colorimetry / Q000379:methods*; D004784:Environmental Monitoring / Q000379:methods; D007834:Lasers; D008027:Light; D009391:Nephelometry and Turbidimetry / Q000379:methods*; D009792:Oceans and Seas; D010783:Photometry / Q000379:methods*; D012031:Refractometry / Q000379:methods*; D058998:Remote Sensing Technology / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D014867:Water / Q000032:analysis*; D060753:Water Quality
chemical_list: D014867:Water