کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4460473 1621331 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A method for operational calibration of AVHRR reflective time series data
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات کامپیوتر در علوم زمین
پیش نمایش صفحه اول مقاله
A method for operational calibration of AVHRR reflective time series data
چکیده انگلیسی

We have developed an automatic method to monitor the AVHRR instrument sensitivity over time in the short-wave reflective channels to ensure that trends in the data series obtained by this instrument are real and not sensor artefacts.Our radiometric calibration method uses the Multivariate Alteration Detection (MAD) algorithm to statistically select invariant features over land areas from multiple image-pairs that are compared to assess changes in the instrument's calibration. This method requires no a priori regional knowledge and is globally applicable. A calibrated time series from Pseudo-Invariant Features located in central Australia are shown to have long-term trends removed. The resulting MAD-based calibration has a root mean squared error of ∼ 5–6% for both channels 1 and 2 and is in alignment with other approaches.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Remote Sensing of Environment - Volume 112, Issue 3, 18 March 2008, Pages 1117–1129
نویسندگان
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