What are the names of the bands that Oli records?
Operational Land Imager (OLI) Landsat 8 bands from the OLI sensor are coastal, blue, green, red, NIR, SWIR-1, SWIR-2 and cirrus. These 8 bands have a ground resolution of 30 meters. Then, the panchromatic band has a finer resolution of 15 meters.
What are the bands of Landsat 8?
Landsat 8 Instruments
- Band 1 Visible (0.43 – 0.45 µm) 30 m.
- Band 2 Visible (0.450 – 0.51 µm) 30 m.
- Band 3 Visible (0.53 – 0.59 µm) 30 m.
- Band 4 Red (0.64 – 0.67 µm) 30 m.
- Band 5 Near-Infrared (0.85 – 0.88 µm) 30 m.
- Band 6 SWIR 1(1.57 – 1.65 µm) 30 m.
- Band 7 SWIR 2 (2.11 – 2.29 µm) 30 m.
What is Landsat Oli used for?
The Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are instruments onboard the Landsat 8 satellite, which was launched in February of 2013. The satellite collects images of the Earth with a 16-day repeat cycle, referenced to the Worldwide Reference System-2.
Who built Landsat 8?
NASA Goddard Space Flight Center
Northrop GrummanBall Aerospace & TechnologiesOrbital Sciences Corporation
Landsat 8/Manufacturers
How many bands can Landsat 8 collect at once?
nine
Landsat 8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) images consist of nine spectral bands with a spatial resolution of 30 meters for Bands 1 to 7 and 9.
How is Mndwi calculated?
MNDWI = (Green – SWIR) / (Green + SWIR) Vegetation has much smaller values which distinguishing vegetation from water bodies easily.
What is the resolution of Landsat 8?
15 meters
The resolution for Band 8 (panchromatic) is 15 meters. Thermal bands 10 and 11 are useful in providing more accurate surface temperatures and are collected at 100 meters. Approximate scene size is 170 km north-south by 183 km east-west (106 mi by 114 mi).
What is Mndwi?
“The Modified Normalized Difference Water Index (MNDWI) uses green and SWIR bands for the enhancement of open water features. It also diminishes built-up area features that are often correlated with open water in other indices. MNDWI = (Green – SWIR) / (Green + SWIR)
Why do we use NDVI?
Simply put, NDVI helps to differentiate vegetation from other types of land cover (artificial) and determine its overall state. It also allows to define and visualize vegetated areas on the map as well as detect abnormal changes in the growth process.
How are the widths of Oli bands refined?
The widths of several OLI bands are refined to avoid atmospheric absorption features within ETM + bands. The biggest change occurs in OLI band 5 (0.845–0.885 μm) to exclude a water vapor absorption feature at 0.825 μm in the middle of the ETM + near infrared band (band 4; 0.775–0.900 μm).
What are the radiometric requirements for the Oli?
NASA placed stringent radiometric performance requirements on the OLI. The OLI is required to produce data calibrated to an uncertainty of less than 5% in terms of absolute, at-aperture spectral radiance and to an uncertainty of less than 3% in terms of top-of-atmosphere spectral reflectance for each of the spectral bands in Table 1.
What are the requirements for an oli sensor?
The OLI requirements specified a sensor that collects image data for nine spectral bands with a spatial resolution of 30 m (15 m panchromatic band) over a 185 km swath from the nominal 705 km LDCM spacecraft altitude.
How are the spectral widths of Oli bands determined?
Table 1 provides the specified spectral bandwidths in comparison to the ETM + spectral bands along with the required ground sample distances (GSDs). The widths of several OLI bands are refined to avoid atmospheric absorption features within ETM + bands.