Satellite-ground direct connection system and data transmission method of satellite-ground direct connection terminal
A technology of a data transmission method and a data reception method, which is applied in the field of satellite communication, can solve the problems of increasing the size and weight of the satellite-ground direct connection terminal, reducing the portability of the terminal, etc., and achieve the effect of reducing energy consumption and increasing the data transmission rate
Inactive Publication Date: 2020-09-15
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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However, increasing the size of the antenna will increase the size and weight of the satellit
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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0024] The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0025] In the first aspect, an embodiment of the present invention provides a satellite-to-ground direct connection system, as shown in the attached figure 1 As shown, the system includes: a sat...
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The invention discloses a satellite-ground direct connection system and a data transmission method of a satellite-ground direct connection terminal. The method comprises a data uploading method and adata receiving method. The data uploading method comprises the following steps that the satellite-ground direct connection terminal searches whether a connectable mobile station exists or not; if a connectable mobile station does not exist, the satellite-ground direct connection terminal directly sends data to the satellite; if the connectable mobile station exists, the satellite-ground direct connection terminal sends data to the mobile station, and the mobile station sends the data to the satellite. The data receiving method comprises the following steps that when a satellite passes throughthe top, the satellite-ground direct connection terminal searches whether a connectable mobile station exists or not; if the connectable mobile station does not exist, the satellite-ground direct connection terminal establishes communication connection with the satellite, a data transmission command is sent to the satellite, and the satellite downloads data to the satellite-ground direct connection terminal; and if a connectable mobile station exists, the satellite-ground direct connection terminal establishes a communication connection with the mobile station and sends a data transmission command to the mobile station, the mobile station forwards the data transmission command to the satellite, the satellite downloads data to the mobile station, and the mobile station forwards the data tothe satellite-ground direct connection terminal.
Description
technical field [0001] The invention relates to the technical field of satellite communication, in particular to a satellite-ground direct connection system and a data transmission method for a satellite-ground direct connection terminal. Background technique [0002] The satellite-ground direct connection terminal is an important part of the satellite ground application system and an important means of communication in areas that cannot be covered by traditional mobile communication networks. With the continuous expansion of low-orbit satellite applications, such as space-based Internet of Things and space-based Internet, the number of satellite-ground direct connection terminals will usher in explosive growth. [0003] With the development of sensor technology, more and more sensors are integrated into the same terminal, so as to improve the environment perception ability of the terminal. Therefore, the amount of data obtained by the terminal is also continuously increasi...
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Login to view more IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18513H04B7/1853H04B7/18539H04B7/18543
Inventor 张飞陈小前李献斌郭鹏宇王建
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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