Stereoscopic Block Adjustment Method for Satellite Imagery Based on Spaceborne Laser Altimetry Data

Abstract

The satellite image stereo area network adjustment method based on spaceborne laser altimetry data includes: obtaining the first control data and the second control data corresponding to the connection points from the first control data source and the second control data source respectively; based on remote sensing The stereoscopic image imaging model performs joint stereoadjustment processing on the first control data and the second control data to obtain parameter correction values ​​of the remote sensing stereoscopic image imaging model, wherein obtaining the first control data and the second control data includes: obtaining the spaceborne laser The plane coordinates of the altimetry data; the plane coordinates of the spaceborne laser altimetry data are mapped to the satellite remote sensing digital orthophoto and the footprint image is collected; the plane of the spaceborne laser altimetry data and the footprint image or a part of the footprint image The control data together constitute the second control data; a certain number of points with the same name within the range of the footprint image or part of the footprint image are obtained from the image control point library as connection points, and the control data of the points with the same name are used as the first control data .

Description

Technical field [0001] The invention relates to a satellite remote sensing image adjustment method, more specifically to a satellite image three-dimensional regional network adjustment method based on satellite-borne laser altimetry data. Background technique [0002] With the development of economy, three-dimensional geographic information has been widely used in various aspects such as digital earth, urban planning, and environmental protection. The rapid development of remote sensing satellite technology has made aerospace photogrammetry another means of quickly acquiring three-dimensional geographic information after aerial photogrammetry. Especially in recent years, with the development of technologies such as three-line array stereo cameras, three-dimensional remote sensing information acquisition technology Great progress has been made. [0003] For example, Ziyuan-3 is my country's first high-precision civilian stereo mapping satellite. Its successful launch and effective ...

AI Technical Summary

Problems solved by technology

Chinese patent application 201310143369.3 discloses a multi-source heterogeneous remote sensing image control point automatic acquisition method, which can automatically extract remote sensing control image points (control point image films) from multi-source heterogeneous images, improving the efficiency and accuracy of control data acquisition. But in essence, it is still an automatic acquisition method of plane control points.

However, since this method is only for image plane block adjustment, it cannot solve the problem of insufficient elevation measurement accuracy of ZY-3 surveying and mapping satellite

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