China Academy of Space Technology

Chinese Academy of Space Technology

Fenglong Hou

Dong Chen

Feng Li

Xiaoxiong Lin

Yu Qi

Shengwei Pei

Xingang Li

Zeyu Bao

Hua Huang

Hengchao Sun

Jie Xing

Jincheng Tong

Shaoran Liu

A method for reducing frequency interference, and a communication satellite system. The method includes configuring the communication satellite system, determining a first range of areas in which a spatial isolation angle between the LEO satellite and the GEO satellite does not satisfy a minimum spatial isolation angle within service areas of the movable spot beams, enabling the movable spot beams to not enter the areas, and when the movable spot beams of the transmitting and receiving user antennas of multiple adjacent LEO satellites provide services to a same area, calculating a spatial isolation angles between the movable spot beams of the transmitting and receiving user antennas of any two adjacent LEO satellites, and in response to the spatial isolation angle not satisfying the minimum spatial isolation angle, assigning different sub-frequencies to the movable spot beams that do not satisfy the minimum spatial isolation angle.

Method for reducing frequency interference, and communication satellite system

Provided are a method for sharing a radio spectrum with high-orbit communication satellites, which comprise a geosynchronous satellite and operate in a near-equatorial orbit, on the basis of a beam constant offset, and a low-orbit communication satellite system. The method comprises: low-orbit communication satellites completing, near the South and North Poles and the equator, the conversion of a transmitting beam constant offset state, wherein before and after each implementation, beam offset directions are the opposite of each other, and the beam offset degree is a fixed constant; the low-orbit communication satellites near the equator all deflect towards the equator; during beam offset conversion near the North and South Poles, services are provided by beams of other low-orbit communication satellites in two other orbits, which are adjacent to each other, at both sides of the current orbit; and during the implementation of beam offset conversion near an ascending node and a descending node, beam coverage services are provided by adjacent low-orbit communication satellites located at the other side of the ascending node or the descending node in the same orbit.

Method for sharing radio spectrum on basis of beam constant offset, and low-orbit communication satellite system

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Beijing, China

Fenglong Hou