Satellite-borne active and passive integrated detection device

Abstract

The invention relates to a satellite-borne active and passive integrated detection device. The satellite-borne active and passive integrated detection device comprises a reflecting surface part, an active part, a passive part, an expansion mechanism and a data processing system, wherein the reflecting surface part is shared by the active part and the passive part, the passive part is arranged on the active part and is arranged at the top of a satellite loading cabin by the expansion mechanism, and the data processing system is arranged in a satellite. By effective combination of active detection and passive detection, satellite-borne detection and data fusion inversion are expanded, the defects of high detection accuracy while low space resolution (generally dozens of kilometers dimension)of passive detection and the defects of high space resolution (generally several meters to several kilometers dimension) while low accuracy of active detection can be overcome, and high-space resolution and high-accuracy soil humidity and freezing and thawing state detection can be achieved.

Description

technical field [0001] The invention relates to the field of aerospace remote sensing satellite payloads, in particular to a spaceborne active and passive integrated detection device. Background technique [0002] The detection of soil moisture and freeze-thaw state mainly uses space-borne passive microwave detection. Passive detection is very sensitive to changes in soil moisture and has high precision, but has the disadvantage of low spatial resolution (generally tens of kilometers scale); while active detection The advantage of the method is that the spatial resolution is high (generally a few meters to several kilometers scale), and the response to the change of the surface roughness and vegetation structure is significant, but the accuracy is low. Contents of the invention [0003] The purpose of the present invention is to provide a spaceborne active and passive integrated detection device, which can carry out spaceborne detection and data fusion and inversion throug...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a spaceborne active and passive integrated detection device, which can carry out spaceborne detection and data fusion and inversion through the effective combination of active detection and passive detection, so as to solve the problem of high precision of passive detection but low spatial resolution. (generally tens of kilometers scale) and active detection with high spatial resolution (generally several meters to several kilometers scale) but low precision technical issues

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