Satellite-borne down-looking ice-penetrating synthetic aperture radar transmission path calculation method
A synthetic aperture radar and transmission path technology, applied in the field of radar detection, can solve the problems of poor accuracy of radar detection results, inaccurate calculation of ice radar transmission path, etc., and achieve the effect of accurate transmission path
Pending Publication Date: 2022-04-05
CHINA ACADEMY OF SPACE TECHNOLOGY +1
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to solve the problem that the accuracy of the radar detection results is poor due to the inaccurate solution of the ice radar transmission path in the prior art
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[0069] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0070] figure 1 It is a schematic diagram of the geometry of a satellite-based ice-synthetic aperture radar observation target. In order to obtain a more accurate ice radar transmission path, combined with the earth model, the present invention assumes that the earth's surface is an air medium area, and the dielectric constant of the air is ...
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The invention relates to the technical field of radar detection, in particular to a satellite-borne down-looking ice-penetrating synthetic aperture radar transmission path calculation method, which comprises the following steps: acquiring earth model parameters, system parameters of a satellite-borne down-looking ice-penetrating synthetic aperture radar and echo simulation parameters; the echo simulation parameters comprise an azimuth time sequence, and an antenna position sequence and an in-ice target position in a rotating geocentric coordinate system; in the south pole, the north pole or other to-be-detected areas covered by ice, taking the part above the earth surface as an air medium and the part below the earth surface as an ice medium, for each azimuth moment, solving a corresponding geocentric angle of a corresponding transmission path in the ice medium, and further respectively determining the lengths of the transmission path in the air medium and the ice medium; and the transmission path is connected with the corresponding antenna position and the in-ice target position and is located in the beam range of the transmitting antenna. According to the method, the transmission path can be determined more accurately, and technical support is provided for radar imaging, echo simulation and the like.
Description
technical field [0001] The present invention relates to the technical field of radar detection, and in particular to a method for calculating a transmission path of a synthetic aperture radar for ice detection under space, computer equipment, and a computer-readable storage medium. Background technique [0002] Since the last century, due to factors such as global warming, the Arctic and Antarctic ice caps have intensified melting, which directly led to the rise of global sea levels, posing a huge threat to human survival. In order to fully understand the relationship between the polar regions and global climate change, countries around the world have begun scientific expeditions to the polar regions. [0003] In the 1960s, ice radar systems were used to detect the Antarctic ice sheet. After nearly 60 years of development, the current ice radar plays a pivotal role in ice sheet detection research. At present, there are mainly two types of ice radars: airborne and vehicle-m...
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Login to View More IPC IPC(8): G01S7/02G01S13/90
Inventor 刘敏肖鹏刘露王成眭晓虹陈亮袁春柱
Owner CHINA ACADEMY OF SPACE TECHNOLOGY