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Imaging morphology simulation, dynamic simulation method of single-side SAR satellite and system

A simulation method and satellite technology, which is applied in the field of subject application, can solve the problems such as the difficulty of realizing SAR satellite imaging form simulation, and achieve the effect of fast response speed and good simulation effect

Inactive Publication Date: 2019-04-05
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a single-side SAR satellite imaging form simulation, dynamic simulation method and system

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  • Imaging morphology simulation, dynamic simulation method of single-side SAR satellite and system
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  • Imaging morphology simulation, dynamic simulation method of single-side SAR satellite and system

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Embodiment Construction

[0058] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0059] One-sided SAR satellites usually scan the ground area in the following way, as follows figure 1 shown. The satellite advances along the X direction, and the ground area scanned by the antenna instantaneously is two concentric circles projected to the ground from the cones made with the satellite position point as the apex and perpendicular to the sub-satellite point. The angle between the inner cones, that is, the minimum elevation angle is innerHalfAngle*2 , the included angle of the outer circular cone is the middle part (annulus) whose maximum height angle is outerHalfAngle*2, and then take the outer circular sector (maxclockangle-minclockangle, the sector clamped by the maximum clock angle and the minimum clo...

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Abstract

The invention discloses an imaging morphology simulation, dynamic simulation method of a single-side SAR satellite and system. The imaging morphology simulation method of the single-side SAR satellitecomprises the following steps of: determining a sector position of the single-side SAR satellite; respectively calculating the boundary of an inner circle and an outer circle according to the minimumclock angle and the maximum clock angle, and respectively uniformly extracting N points inside the boundary to form a 2N-shape as the sector, wherein N is a positive integer greater than or equal to3; transforming the 2N points from a coordinate point where the satellite is located from a satellite observation coordinate system to a geocentric coordinate system, and converting a connection lineof the 2N points and the point where the satellite is located and the earth model to obtain a coordinate set of ground points; respectively taking out adjacent two points in the obtained coordinate set of the ground points to form triangular surfaces with the coordinate point where the satellite is located; and drawing the combination of the triangular surfaces to obtain the three-dimensional morphology simulation of the single-sided SAR satellite. The imaging morphology simulation, dynamic simulation method of the single-side SAR satellite and the system have the advantages of capable of effectively simulating the imaging modality of the single-side SAR satellite scanning area and being good in the simulation effect and high in the response speed.

Description

technical field [0001] The invention relates to the application fields of aerospace, earth information science and technology, and more specifically, to a single-sided SAR satellite imaging form simulation, dynamic simulation method and system. Background technique [0002] In the current earth observation application of remote sensing satellites, remote sensing satellites equipped with SAR sensors are widely used in disaster monitoring, environmental monitoring, ocean monitoring, resource exploration, crop monitoring, etc. Production estimation, surveying and mapping, and military affairs have been widely used, and have also attracted the attention of countries all over the world. Therefore, the imaging form of SAR sensors needs further research and development. Compared with remote sensing satellites such as optics and electronics, SAR satellites have the most and most complex sensor forms, and there is no way to disclose the imaging form simulation method of SAR satellite...

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/90G01S13/9088
Inventor 余翔宇
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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