What are radiometric errors? Give a detailed account of radiometric image corrections techniques.

Radiometric errors in remote sensing refer to inaccuracies or distortions in the measurement of the intensity or energy reflected or emitted by the Earth's surface, as recorded by remote sensing instruments. These errors can arise from various sources such as sensor malfunctions, atmospheric interference, or improper calibration, which result in the recorded digital values deviating from the true values of the ground reflectance. These errors can affect the quality and accuracy of the data, making it difficult to interpret or analyze satellite and aerial imagery correctly.

One of the primary sources of radiometric errors is sensor-related issues. This could include miscalibration of the sensor, spectral response function inaccuracies, or even problems with the signal-to-noise ratio. Other errors may arise from environmental factors such as variations in atmospheric conditions (e.g., clouds, dust, ________ _______ ________ _____ ____ _____ ___ ______ ______ ______.
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