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Same-frequency interference characterization method and device for low-orbit satellite communication system

A satellite communication system and co-frequency interference technology, which is applied in the field of satellite communication, can solve problems such as inability to characterize low-orbit satellite communication system co-frequency interference well

Active Publication Date: 2021-11-23
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a low-orbit satellite communication system co-frequency interference characterization method and device to solve the technical problem that the prior art cannot well characterize co-frequency interference in the low-orbit satellite communication system

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  • Same-frequency interference characterization method and device for low-orbit satellite communication system
  • Same-frequency interference characterization method and device for low-orbit satellite communication system
  • Same-frequency interference characterization method and device for low-orbit satellite communication system

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no. 1 example

[0062] This embodiment provides a method for characterizing co-channel interference of a low-orbit satellite communication system, and the method can be implemented by electronic equipment. The execution flow of this method is as follows figure 1 shown, including the following steps:

[0063] S1, building a low-orbit satellite communication system model; wherein, the low-orbit satellite communication system model includes multiple satellites and multiple ground terminals that communicate with the satellites, and the multiple satellites are divided into multiple layers according to orbital heights , each layer includes a plurality of satellites; the plurality of ground terminals conform to a homogeneous Poisson point distribution;

[0064] S2, using the position information of a single satellite as a matrix element to establish a space-time position model matrix of each layer of satellites;

[0065] S3. Based on the space-time position model matrix and the position informatio...

no. 2 example

[0105] This embodiment provides a co-channel interference characterization method of a low-orbit satellite communication system, aiming at proposing a mapping mechanism for complex interference spatio-temporal characteristics within the system for the future development of large and complex low-orbit satellite systems. The method can be implemented by an electronic device. The execution flow of this method is as follows figure 2 shown, including the following steps:

[0106] Step 1: Based on the Walker constellation configuration as the research object, construct the hierarchical formation initialization matrix model of the entire giant constellation system

[0107] Specifically, in this embodiment, multiple layers of tens of thousands of low-orbit satellites and ground end users are considered. like figure 2 As shown, it also includes the multi-layer low-orbit satellite system leo_i, several terminals on the ground, and Q is the set of ground terminals, considering the...

no. 3 example

[0152] This embodiment provides a device for characterizing co-channel interference of a low-orbit satellite communication system, the device comprising:

[0153] A communication system model building module, used to construct a low-orbit satellite communication system model; wherein, the low-orbit satellite communication system model includes a plurality of satellites and a plurality of ground terminals communicating with the satellites, and the plurality of satellites are based on the orbit The height is divided into multiple layers, each layer includes multiple satellites; the multiple ground terminals conform to a homogeneous Poisson point distribution;

[0154] The space-time position model matrix construction module is used to use the position information of a single satellite as a matrix element to establish the space-time position model matrix of each layer of satellites;

[0155] The interfering satellite set construction module is used to determine the satellites tha...

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Abstract

The invention discloses a same-frequency interference characterization method and device for a low-orbit satellite communication system. The method comprises the following steps: constructing a low-orbit satellite communication system model, wherein the low-orbit satellite communication system model comprises a plurality of satellites and a plurality of ground terminals, and the plurality of satellites are divided into multiple layers according to the orbit height; taking the position information of a single satellite as a matrix element, and establishing a space-time position model matrix of each layer of satellites; based on the space-time position model matrix and the position information of the target terminal, determining satellites possibly forming same-frequency interference on the target terminal, and obtaining a satellite set possibly forming interference on the target terminal; calculating the access capacity of the target terminal; and meanwhile, researching the same-frequency interference of the uplink of the terminal in the satellite coverage area on the satellite, giving the definition of interference factors to characterize the same-frequency interference of the uplink of the terminal in the coverage area, and calculating the average capacity of the satellite. The method can provide guiding significance for technical research of constellation interference avoidance, system frequency rules, constellation design and the like.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a co-frequency interference characterization method and device of a low-orbit satellite communication system. Background technique [0002] With the rapid development of science and technology, the rapid development of 5G communication technology and Internet technology, the traditional geostationary orbit communication market is becoming smaller and smaller. At present, the vast majority of communication satellites in the world are mainly GEO satellites. Due to limited orbital resources, geosynchronous geostationary satellites can only work in a crowded environment. The requirements of business transmission, while low-orbit satellites can greatly reduce the delay and achieve a delay of less than 50ms, which is equivalent to the ground optical fiber network. Therefore, the development of low-orbit satellite communication systems has become the current development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/345H04B17/391H04B17/40H04B7/185
CPCH04B17/345H04B17/3912H04B17/40H04B7/18519
Inventor 张海君彭欢刘向南邱宇隆克平盛敏黄颖李伟米振强
Owner UNIV OF SCI & TECH BEIJING