Stereo surveying and mapping imaging system and method based on separation load satellite formation

Abstract

The invention relates to a stereo surveying and mapping imaging system based on a separation load satellite formation. The imaging system comprises the separation load satellite formation, a satellite antenna and a ground observation station, wherein the separation load satellite formation comprises at least two satellites; each satellite comprises a satellite borne point detector; one satellite comprises an area array detector; the satellite antenna is installed on the ground observation station; sunlight comes to the surface of the globe and is reflected through the ground, the satellite borne point detectors on the various satellites receive the total light intensity in various detection directions, and a detection result is taken as a detection signal of an object arm; the area array detector detects the optical field distribution of sunlight, and a detection result is taken as a detection signal of a reference arm; the detection signals of the object arm and the reference arm are wirelessly transmitted to the ground and received by the satellite antenna; the ground observation station reconstructs a two-dimensional image observed by the various formation satellites by virtue of a compression sensing algorithm according to the received data, and then a stereo surveying and mapping image is constructed by comparing shaded area information of the images.

Description

technical field [0001] The invention relates to the field of solar light ghost imaging technology, separated payload satellite formation technology and compressed sensing theory, in particular to a three-dimensional surveying and mapping imaging system and method based on separated payload satellite formation. Background technique [0002] Correlation imaging, or ghost imaging (GI), is one of the frontiers and hotspots in the field of quantum optics in recent years. Associative imaging can generate an image of an object on an optical path that does not contain the object, and has received extensive attention as a new imaging technology. The concept of ghost imaging was first demonstrated using spatially entangled photon pairs generated by parametric down-conversion. The principle of ordinary ghost imaging is: there is an object in the optical path of the object arm, but a barrel (single-pixel) detector without spatial resolution is used for detection; there is no object in ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the sampling redundancy and waste of detector resources in satellite stereoscopic surveying and mapping in the prior art, and the formation stability of the low-orbit separation load formation is affected by J2 perturbation and atmospheric resistance, and there are positive problems in formation design and inverse problems, how to maintain the effectiveness of solar light ghost imaging in space, etc., so as to provide a three-dimensional mapping and imaging system and method based on separate payload satellite formations

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