MHR-2 · INSTRUMENT VIEW PASSIVE
ItemMHR-2
ClassPassive
Status▸ Available
PASSIVE · ONBOARD

mHR-2

Micro hyperspectral radiometer — above-water Rrs for satellite cal/val.

Passive three-channel radiometer. Measures sunlight reflected off the water the way a satellite does, but from the surface and free of atmospheric distortion, to derive Remote Sensing Reflectance (Rrs). Pairs with the active LIF sensors to build satellite match-up pairs. Developed in the OQOMETHI programme; field-tested with ESA at Venice, 2025.

Channels 3 Ed·Ls·Lt
Range 320–880 nm
Mass 0.9 kg
Output Rrs
02 · Measures

What it measures.

Each parameter resolved through its own optical process. Wavelengths shown on the spectrum strip mark the emission band returned to the detector.

01

Above-water Rrs

Interleaves downwelling irradiance, sky radiance, and sea-surface radiance with dark-current auto-calibration.

Process
Passive radiometry
Range
320 – 880 nm
02 λ 560 nm

Satellite match-up

Derives the exact Rrs quantity satellites estimate, for cal/val pairing alongside active LIF measurements.

Process
Passive radiometry
Range
Rrs pairs
03

Sun-glint rejection

Above-water radiometry viewing geometry minimises surface glint.

Process
AWR viewing geometry
Range
Glint-minimised
04

Autonomous operation

Runs unattended with automatic upload to cloud storage.

Process
Unattended + cloud upload
Range
Operator-free
03 · Deploy

Deployment possibilities.

Supported platforms for this instrument. Custom mounts and integration on request.

Vessel

Custom mount

▸ On request

Small boat

Custom mount

▸ On request

Bridge / pier

Custom mount

▸ On request

Buoy

Surface-floating

▸ Above-water radiometry

Fixed coastal platform

Custom mount

▸ On request
04 · Datasheet

Specifications.

Complete technical specifications. Full PDF datasheet available on request.

↓ Request PDF
Parameter
Value
Optical
5 entries
Channels
3 · Ed, Ls, Lt
Output
Rrs (remote-sensing reflectance)
Wavelength range
320–880 nm
Spectral resolution
7 nm
Radiance FOV
Electronics
3 entries
ADC
12-bit
Integration time
270 µs – 1 s
Comms
RS485 / Wi-Fi / onboard logging
Mechanical
2 entries
Size / mass
132 × 125 × 106 mm · 0.9 kg
Protection
IP68
Electrical
1 entry
Power
12 V DC · 12 W peak
05 · Contact

Enquire about the mHR-2.

Direct line to the engineering team. Pricing, integration support, and quote within two working days.

▸ info@lifelidar.com +33 7 80 72 60 72 Sophia Antipolis · Valbonne, France
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