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High-throughput satellite beam frequency adjustment method based on center frequency point fixation

A center frequency point and frequency adjustment technology, which is applied in the field of flexible frequency control of high-throughput satellites, can solve problems such as reducing system C/I, affecting user use, and long occupation time, so as to reduce algorithm complexity and improve engineering use Value, the effect of improving system load-to-interference ratio

Active Publication Date: 2021-11-16
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

[0004] (1) When considering the frequency resource allocation of the beam, the interruption of the original service caused by the frequency hopping of the beam is not considered, which affects the use of users;
[0005] (2) When considering the user's subcarrier allocation, using the same carrier for adjacent beams will reduce the system C / I, and the frequency continuity of the same beam is not considered when allocating subcarriers;
[0006] (3) In the beam frequency allocation method, in the face of a complex system with hundreds of beams, there is no effective method to solve the frequency allocation problem, and the existing methods have the problems of long time occupation and low efficiency

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  • High-throughput satellite beam frequency adjustment method based on center frequency point fixation
  • High-throughput satellite beam frequency adjustment method based on center frequency point fixation

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Embodiment Construction

[0051] The present invention includes inputting the bandwidth requirement of each beam, assigning beam priority, inputting beam isolation, assigning a beam number to each beam, calculating the center frequency point of each beam, allocating frequency according to the center frequency point of the beam, and according to the beam priority Allocate the frequency overlapping area of ​​adjacent beams, and output the frequency allocation scheme. Such as figure 1 As shown, it mainly includes the following steps:

[0052] 1) Obtain m beam combinations, and each beam combination includes n beams; n is a positive integer, and the value range of n is 4 to 8; m is a positive integer, and m is greater than or equal to 10; obtained according to the input of the superior The bandwidth requirement Bi and priority of each beam; obtain the satellite transponder system frequency range [Bmin, Bmax], the system bandwidth Btotal = Bmax-Bmin; the value range of Btotal is 1GHz ~ 2.5GHz; Bmin, Bmax i...

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Abstract

A high-throughput satellite beam frequency adjustment method based on center frequency point fixation mainly comprises the following steps: inputting the bandwidth requirement of each beam; and distributing beam priorities, inputting beam isolation, distributing a beam number to each beam, calculating a central frequency point of each beam, distributing frequencies according to the central frequency points of the beams, distributing frequency overlapping areas of adjacent beams according to the beam priorities, and outputting a frequency distribution scheme. The invention provides a high-throughput satellite frequency adjustment method based on center frequency point fixation based on a flexible frequency conversion technology and a flexible filtering technology, so that beam co-frequency interference is avoided, and the utilization rate of system frequency resources is improved.

Description

technical field [0001] The invention belongs to the technical field of flexible frequency control of high-throughput satellites, in particular to a high-throughput satellite beam frequency adjustment method based on a fixed center frequency point. Background technique [0002] Satellite frequency resources are the most precious resources on the satellite. With the development of flexible payloads on the satellite, it is necessary to flexibly adjust the frequency resources of beams in the future for uneven business distribution. But the frequency change will bring about the deterioration of the system C / I. If the frequency planning is not good, the total capacity of the satellite will be deteriorated. [0003] When allocating satellite frequency resources, there are three important defects in the traditional method. [0004] (1) When considering the frequency resource allocation of the beam, the interruption of the original service caused by the frequency hopping of the beam...

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Application Information

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IPC IPC(8): H04B7/185H04B7/0408H04W72/04
CPCH04B7/1851H04B7/0408H04W72/0453Y02D30/70
Inventor 衣龙腾秦鹏飞周业军王达禹航秦兆涛缪中宇
Owner CHINA ACADEMY OF SPACE TECHNOLOGY