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    LCLUC
    https://lcluc.umd.edu › sites › default › files › lcluc_documents
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    Optical Remote Sensing: Basics, Data Processing, Applications

    • Measurement of spatially distributed data/information on some properties (spectral; spatial; physical) of an array of target points (pixels) within the sensed scene Applying recording devices not in physical, inti… 展开

    1.3 Concept of Remote Sensing

    Human senses Reflected or issued visible light sound waves heat waves chemical signals (smell) … 展开

    LCLUC
    1.4.4 Temporal Resolution

    Hourly (once or more times an hour) Geostationary observations Daily (one or more orbits a day) Observations from polar orbiters Bi-monthly (or more frequently) Landsat-class ob… 展开

    LCLUC
    Satellite Orbital Terms: Field of View, Swath, Footprint, Repeat Cycle

    A satellite follows a generally elliptical orbit around the earth. The time taken to complete one revolution of the orbit is called the orbital period. The satellite traces out a path on th… 展开

    LCLUC
    1.6 Radiometers: Whisk Broom versus Pushbroom

    The Landsat and AVHRR sensors are built in a “whisk broom” (across track) configuration. In a whisk broom sensor, a mirror scans across the satellite’s path, reflecting light int… 展开

    LCLUC
    2. Data Processing Processing Chain

    Geo-correction/orthorectification Calibration Satellite data records (SDR), or time series of measured radiances Cloud (and Cloud Shadow) Detection/Masking/Screening Atmospheric Cor… 展开

    LCLUC
    How many levels of IKONOS imagery products are there?
    There are six levels of IKONOS imagery products, determined by the level of positional accuracy: Geo, Standard Ortho, Reference, Pro, Precision and PrecisionPlus.
    earth.esa.int
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    目录
    1.3 Concept of Remote Sensing
    1.4.4 Temporal Resolution
    Satellite Orbital Terms: Field of View, Swath, Footprint, Repeat Cycle
    1.6 Radiometers: Whisk Broom versus Pushbroom
    2. Data Processing Processing Chain
    How many levels of IKONOS imagery products are there?
     
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