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INSTRUMENT

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  • Instrument - Photon/Optical Detectors

    Instrument - Photon/Optical Detectors

    Operational Land Imager (OLI)

    The OLI, on board Landsat 8, measures in the visible, near infrared, and short wave infrared.

  • Mission - Third Party Missions

    Mission - Third Party Missions

    Landsat 8

    Landsat 8 is an Earth-imaging satellite from NASA which launched in 2013. The Landsat programme provides a global archive of satellite imagery and is managed and operated by the U.S. Geological Survey (USGS).

  • Mission - Third Party Missions

    Mission - Third Party Missions

    Landsat Series

    The Landsat series is the world's longest running system of satellites for moderate-resolution optical remote sensing for land, coastal areas and shallow waters.

  • Instrument - Photon/Optical Detectors

    Instrument - Photon/Optical Detectors

    Product Anomalies

    and provides up-to-date information and details regarding known issues and current artifacts. TIRS Anomaly Image quality issues have be...

  • Instrument - Photon/Optical Detectors

    Instrument - Photon/Optical Detectors

    Operational Land Imager (OLI) Overview

    Sensor Modes Landsat 8 operates in the EARTH OBSERVATION mode for nominal routine operations. The satellite acquires all day-lit descending land images between 57° North and 57° South, and on average 90% day-lit descending land images at higher latitudes; combined to approximately 725 images per day. Night, ocean, and day-lit ascending images are only acquired by special request. Almost all imaging is performed with both the OLI and TIRS instruments. The exception is for some night data, acquired for TIRS calibration and therefore with only the TIRS sensor (identified by a "T" in the product filename). If either the TIRS or OLI is not available, the available sensor that acquired is noted in the filename. Off-nadir imaging is currently only done at night for TIRS-calibration purposes when it does not impact Nadir day-time imaging; it must be approved by the Data Acquisition Manager, as must the special requests for night, ocean, and day-lit ascending imaging. Having said this, Landsat is not a tasking mission hence; off-nadir daytime acquisitions are mostly resisted since they cost nearly an entire orbit of nadir data. Related Links Learn more about the OLI instrument: OLI on the eoPortal OLI on USGS website

  • Document - Technical Note

    Document - Technical Note

    Landsat 7 ETM+ Image Assessment System Radiometric Algorithm Theoretical Basis Document

    optics, although the lamps are nearly identical in terms of current and voltage ratings, (3) the control circuit utilizes the regulated voltage mode for both primary and backup control, whereas TM used

  • Document - Technical Note

    Document - Technical Note

    Landsat 7 ETM Image Assessment System Radiometric Algorithm Theoretical Basis Document

    optics, although the lamps are nearly identical in terms of current and voltage ratings, (3) the control circuit utilizes the regulated voltage mode for both primary and backup control, whereas TM used

  • Document - Technical Note

    Document - Technical Note

    Landsat 7 ETM+ Image Assessment System Geometric Algorithm Theoretical Basis Document

    Version 1.0 The steps include: 1. Checking the current gyro value against a tolerance 2. Doing a forward prediction for each point using the two previous points and comparing this predicted

  • Document - Technical Note

    Document - Technical Note

    Landsat 7 ETM Image Assessment System Geometric Algorithm Theoretical Basis Document

    Version 1.0 The steps include: 1. Checking the current gyro value against a tolerance 2. Doing a forward prediction for each point using the two previous points and comparing this predicted

  • Document - Algorithms Theoretical Baseline Document

    Document - Algorithms Theoretical Baseline Document

    Landsat-TM-Data-Format-Control-Book-DFCB.pdf

    followed by version number(s) and separated by underscores. Example: LPGS_8.2.3 DATA_CATEGORY 11 = “NOMINAL” = “VALIDATION” = “EXCHANGE” = “TEST” = “ENGINEERING” Current data category

  • Document - Technical Note

    Document - Technical Note

    Landsat-ETM-Data-Format-Control-Book.pdf

    = “NOMINAL” = “VALIDATION” = “EXCHANGE” = “TEST” = “ENGINEERING” Current data category assigned to the data. Values: NOMINAL = Nominal data that exist within expected, acceptable limits.