Water color satellite atmosphere top radiation product quality evaluation and cross calibration method

Abstract

The invention discloses a water color satellite atmospheric layer top radiation product quality evaluation and cross calibration method. The method comprises the following steps: establishing a multi-source satellite quasi-synchronization effective pixel selection constraint condition; finding that radiation signal abnormity caused by the natural process has high interstellar correlation; designing a multi-source satellite radiation product error analytical equation; combining a dynamic cross radiation calibration mechanism; and determining the influence of the radiation product quality on the water color product. According to the scheme, constraint conditions of quasi-synchronous observation are specified for the first time, an analytic equation of multi-source satellite radiation product errors is determined, dynamic evaluation and cross calibration of the water radiation product quality are achieved, the defect that a traditional method is seriously influenced by abnormal signals caused by the natural process is overcome, and the water radiation product quality and the automatic service level are improved; and moreover, the method is easy to implement, can be used for dynamically monitoring and improving the quality of water radiation products, and has wider practical application value and economic value.

Description

Technical field[0001]The present invention belongs to the field of quantitative remote sensing, and specifically, the present invention relates to a method of evaluation and cross-calibration method for aqua-colored satellite atmosphere.Background technique[0002]Along the lakes, along the rivers and coasts are the most potential and vital areas of human society, which is an important ecological environment carrying area, with significant economic benefits. Since the population in recent years is constantly gathering along the Lake, along the rivers and coasts, the water ecology is increasing, and the resources and environmental problems are getting more serious. Strengthening the monitoring and management of water environments along the Lake, along the Yangtze River and Coasts has become an important problem that all levels of governments need to be resolved. Remote sensing data has a wide coverage, spatial scale diversity, continuous spectral information, and convenient spectral in...

AI Technical Summary

Problems solved by technology

However, in addition to data errors that can cause abnormal radiation signals, natural factors such as atmospheric conditions, observation geometry, and seawater characteristics will also cause abnormal radiation signals, which greatly reduces the reliability of traditional methods.

In addition, due to the lack of strict quasi-synchronous effective pixel selection constraints, it is difficult to obtain high-precision radiation products through traditional cross-calibration, which seriously affects the commercial application of water body radiation products.

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