Satellite-borne SAR echo simulation processing method, device and equipment
A processing method and echo technology, which is applied in the field of space-borne SAR echo simulation processing, can solve the problem of large amount of simulation calculation of SAR original echo data, and achieve the effect of reducing the amount of calculation and improving the speed of calculation
Pending Publication Date: 2020-10-30
山东产研卫星信息技术产业研究院有限公司
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[0004] In order to solve the problem of large amount of simulation calculation of SAR original echo data existing in the prior art, the present invention provides a spaceborne SAR echo simulation processing method, device and equipment, which have the characteristics of reduced calculation amount and improved calculation efficiency.
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[0060] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0061] refer to figure 1 As shown, the embodiment of the present invention provides a kind of space-borne SAR echo simulation processing method, comprises the following steps:
[0062] 101. Establish a scene coordinate system with the target ground scene as the coordinate plane;
[0063] 102. Obtain the satellite body coordinate system;
[0064] 103. Convert the satellite body coordinate system to the scene coordinate system based on the preset conversion rel...
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The invention relates to a satellite-borne SAR echo simulation processing method, device and equipment. The method comprises the steps that a scene coordinate system is established with a target ground scene as a coordinate plane; acquiring a satellite body coordinate system; converting the satellite body coordinate system into a scene coordinate system based on a preset conversion relationship; acquiring position coordinates of an antenna phase center in a satellite body coordinate system; converting the position coordinates of the antenna phase center into the scene coordinate system; and calculating the slope distance based on the coordinates of the target scattering point in the scene coordinate system and the corresponding coordinates of the position coordinates of the antenna phase center in the scene coordinate system. Compared with conventional echo simulation based on a satellite body coordinate system, coordinate transformation needs to be carried out on all scattering pointsin a scene once at each azimuth slow moment, so that the operand is greatly reduced, and the operation speed is increased.
Description
technical field [0001] The invention belongs to the technical field of SAR echo processing, and in particular relates to a space-borne SAR echo simulation processing method, device and equipment. Background technique [0002] SAR (Synthetic Aperture Radar) is a synthetic aperture radar, which is a high-resolution imaging radar. Its basic idea is to use pulse compression technology and synthetic aperture technology to realize the resolution of radar images in the range direction and azimuth direction. SAR has been widely used Applied in various fields of military and civilian use, it has unique advantages in disaster monitoring, environmental monitoring, ocean monitoring, resource exploration, crop yield estimation, surveying and mapping, and military applications, and can play a role that other remote sensing methods are difficult to play. [0003] The amount of calculation has always been the bottleneck problem that restricts the simulation of SAR raw echo data, especially ...
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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 路兴强王玉林贺杰侯波候富城房体盈
Owner 山东产研卫星信息技术产业研究院有限公司