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Multi-Purpose LiDAR: LIFL-11 (model of 2024)

A new efficient lidar for multi-parameter measurements of water bio-optical properties and land surface

New LIFL-11

Scientific Research

Ecological Monitoring

Satellite Data Validation

Applications

Suitable for any water body, saline or fresh

Operating onboard any vessel, small or big

SPECIFICATION

Laser-Induced Fluorescence LiDAR LIFL-11

Excitation laser wavelengths 

355+532+1064 nm on choice (+266 nm as option)

Receiver: 4-channel beam splitter

Each optical channel spans 250-780 nm, offering 12 selectable spectral bands per channel, totaling 48 bands in a 10-second measurement

Pulse repetition rate

Up to 20 Hz for a preset combination of 4 selected bands

Pulse duration

8 ns

Pulse energy

12 mJ (355 nm), 12 mJ (532 nm), 10 mJ (1064 nm)

Telescope

75 mm Newton; adjustable distance range 1– 100 m

Power, power consumption

100-230AC / 24DC, 250 W

Dimensions; weight

444 × 310 × 286 mm, 26 kg

Receivers

PMT

10 Hz high precision GNSS module

Yes

WiFi/5G/LAN remote control & Data transfer

Yes

Acceleration, Angular velocity & Angle Detectors, IR-camera

Yes

Scanning system,

Hyperspectral receiver

Yes, the options

Measured parameters

Phytoplankton

Chlorophyll

Bacterioplankton

Phycoerythrin

Phycocyanin

Vegetation index

Marine litter

Polyethylene

Polypropylene

Plastic

Wood

Leavs and seagrass

CDOM/FDOM

Tryptophan protein

Phenolic substances

Fulvic & humic acid

Yellow substance

Oil

Fuel

Light oil

Crude oil

Diesel

 

TSM

Seston

Suspended sediment

Inorganic matter

Mineral matter

Measuring ranges of water quality parameters

Chlorophyll a:  0.05 ÷ 400 mg∙m−3

TSM:  0.1 ÷ 200 g∙m−3

CDOM: 0.001 ÷ 0.15 m−1, a440

Total organic carbon:  0.1 ÷ 100 g∙m−3

Thickness of the surface sensing layer:  0.5 ÷ 5 m

532 nm vertical profiling:  up to 50 m

Technical features

  • DPSS YAG laser : 266 V 355 V 532 nm

  • IMU sensor, IR camera

  • GNSS : 10 Hz Geo-tagging

  • WiFi/5G/LAN remote control and data transfer

  • Passive mode for ocean colour registration

  • UV-sensing layer thickness 1¸10 m with vertical profiling up to 50 m (532 nm, an option)

  • Polarization analyses with profiling (option)

  • Scanning system ±30° azimuth angle (option)

  • MOD (multispectral optical detector, an option)

  • Size : 44x33x28 cm, 26 kg

Advantages

  • Reliable detection of elastic and LIF echo-signals across 4 channels from each laser pulse

  • 4 channels × 12 bands each = 48 bands total (measured in 10 seconds)

  • 4 selectable bands = 20 Hz scanning mode

  • Multi-wavelength excitation: distinct or combined

  • Upper water layer sensing, including the surface microlayer (SML)

  • High sensitivity with minimal saturation due to the long optical path in water

  • Capability for water column profiling with or without polarization at different wavelengths

Spectra

LIFL-11 APPLICATIONS

What is LIF LiDAR for?

Scientific research of spatial patterns of water quality parameters. Only LiDAR can achieve high spatial resolution, down to centimeters and less, without disturbing the aquatic environment. In contrast, water intake systems like flow-through introduce a smoothing effect due to the time required for water delivery, as well as unavoidable mixing before analysis. The new LIFL-11 technology uncovers the fine-scale patchiness of the surface layer, a feature that has largely remained unexplored until now.

Four receiver channels, each equipped with 12 optical filters (48 bands total), continuously monitor the backscattered and fluorescence echo-signals at up to 20 Hz, detecting spatial variability in the upper water layer from micro to macro scales. This includes concentrations of organic pollutants, phytoplankton types via pigment fluorescence, surface organic films, plastic debris, and simultaneous measurements of CDOM, chlorophyll, TSM, and other task-specific parameters.

Measurements of the complete echo-signal spectrum from the near-surface water layer, including the microlayer, are performed within 10 seconds. This includes laser backscatter and emitted fluorescence across 48 narrow optical bands. The full width at half maximum (FWHM) and the spectral channel peak wavelengths can be customized for specific applications.

Environmental monitoring of water pollution in the water column and on the surface caused by various organic substances, such as sewage, organic fertilizers, and more.

Detection of oil and oil products dispersed in the water column and on the surface, with concentration estimates for calculating the extent of contamination.

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