Ocean surface microwave emission and sea temperature measurement
AIRBORNE SENSOR · RADIOMETRY

MWR-P
Microwave radiometer payload for sea

The OPTIMARE MWR-P is a passive microwave radiometer payload for airborne maritime surveillance. It measures microwave emission from the sea surface to estimate sea surface temperature and oil film thickness — data that is not available from optical or radar sensors alone.

Passive radiometer
Type
SST & oil thickness
Use
Passive microwave
Mode
System overview

Passive microwave sensing for oil thickness and sea temperature

The MWR-P measures the natural microwave emission from the sea surface. Because oil films change the emissivity of the water surface, the radiometer can estimate oil film thickness — a measurement that radar and optical sensors cannot provide. The MWR-P also measures sea surface temperature with high sensitivity, adding a quantitative environmental layer to the mission data. All measurements are geo-referenced and integrated into the MEDUSA® display alongside radar and imaging sensor data.

Download product handout
Ocean surface microwave emission and sea temperature measurement
MWR-P
Capabilities

What the MWR-P does

Oil thickness estimation

Passive microwave emission is sensitive to oil film thickness — unique data not available from radar or optical sensors.

Sea surface temperature

High-sensitivity temperature measurement with < 0.1 K NEDT across the swath.

All-weather operation

Passive microwave is unaffected by cloud cover, haze, or solar illumination.

Quantitative output

Calibrated brightness temperature data supports scientific and enforcement reporting.

Complementary sensing

Adds a quantitative layer to SLAR and IR/UV data for comprehensive spill characterisation.

MEDUSA® integration

Data is geo-referenced and displayed alongside other sensor layers in MEDUSA®.

Technical specifications

Key parameters

TypePassive microwave radiometer
FrequencyC-band / X-band (dual)
MeasurementSea surface temperature, oil thickness
Sensitivity< 0.1 K NEDT
Scan modeNadir-pointing / scanning
OutputCalibrated brightness temperature
IntegrationMEDUSA® mission suite
CertificationDO-160 / CS-STAN
Applications

Mission use cases

Oil film thickness estimation
Sea surface temperature mapping
Oil spill characterisation
Environmental monitoring
Scientific research campaigns
EEZ surveillance
Related sensors

Often deployed together

Maritime patrol aircraft over open ocean with radar sweep
RADAR

OPTIMARE SLAR

X-band side-looking airborne radar for wide-area maritime surveillance

View sensor →
Infrared thermal image of ocean surface showing temperature contrast
IMAGING

IR/UV Line Scanner

Dual-channel infrared and ultraviolet line scanner for oil spill and thermal mapping

View sensor →
Laser beam over ocean surface for fluorescence oil detection
LASER

LFS-P

Laser fluorosensor payload for oil-on-water detection using laser-induced fluorescence

View sensor →
Get in touch

Interested in the MWR-P?

Contact the India team for a technical briefing, integration discussion, or to request the product handout.

Type
Passive radiometer
Use
SST & oil thickness
Mode
Passive microwave
Integration
MEDUSA®