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Considering rain attenuation method and system for site selection of ka-band gateway station

A technology of gateway station and frequency band, which is applied in the field of satellite communication and can solve the problems such as the inability to meet the system transmission capacity requirements.

Active Publication Date: 2021-05-28
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a kind of Ka frequency band gateway site selection method and system that considers rain attenuation, to alleviate conventional gateway station site selection method and exist for Ka frequency band satellite communication affected by rain attenuation and cannot Technical Issues in Meeting System Transmission Capacity Requirements

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  • Considering rain attenuation method and system for site selection of ka-band gateway station
  • Considering rain attenuation method and system for site selection of ka-band gateway station
  • Considering rain attenuation method and system for site selection of ka-band gateway station

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Embodiment 1

[0023] Existing gateway stations only consider the constraints of satellite constellation design parameters, satellite coverage area, gateway station elevation angle, national conditions and environmental impacts, and do not consider rain attenuation. In addition to considering the site selection requirements of the existing satellite earth stations, the attenuation Ka-band gateway station site selection method also considers the impact of rain attenuation, so that the minimum number of ground gateway stations can meet the system transmission capacity requirements.

[0024] The satellite network related to site selection of the Ka frequency band gateway station provided by the present invention includes a space segment, a ground segment, and a user segment, such as figure 1 shown. The space segment is composed of multiple satellites to form a satellite constellation, and the satellites form a ring network through laser links. After that, multiple satellites are used as a grou...

Embodiment 2

[0063] The embodiment of the present invention further describes the present invention in detail through specific implementation modes in combination with the orbit parameters of a certain Ka-band mid-orbit satellite communication constellation.

[0064] Specifically, the embodiment of the present invention takes the orbital parameters of a Ka-band mid-orbit satellite communication constellation and 1994 stations with measured rainfall data in my country as an example, and gives ten gateway stations with the highest actual transmission rates of the ground stations. the process of.

[0065]The Ka-band medium-orbit satellite communication constellation provided by the embodiment of the present invention is composed of 8 medium-orbit satellites. The satellite service area of ​​the constellation is a global service. In the under-satellite coverage area, the feeder link uses a mechanically scanned parabolic beam, and the gateway station A mechanical servo is also used to automatical...

Embodiment 3

[0076] Figure 4 It is a schematic diagram of a Ka-band gateway site selection system considering rain attenuation provided according to an embodiment of the present invention, and the system is applied to a Ka-band satellite constellation. like Figure 4 As shown, the system includes: an acquisition module 10 , a first calculation module 20 , a second calculation module 30 and an address selection module 40 .

[0077] Specifically, the acquiring module 10 is configured to acquire geographical information of a plurality of candidate gateway stations; the candidate gateway station is a gateway station capable of establishing a Ka link with the Ka frequency band satellite constellation, and the geographical information includes at least one of the following: The latitude and longitude of the gateway station, the average altitude of the area where the candidate gateway station is located and the rainfall data of the area where the candidate gateway station is located.

[0078] ...

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Abstract

The present invention provides a Ka-band gateway site selection method and system considering rain attenuation, which is applied to Ka-band satellite constellations, including: obtaining geographical information of multiple candidate gateway stations; The rain attenuation value of the gateway station; based on the rain attenuation value, calculate the data transmission rate of each candidate gateway station in the Ka frequency band; based on the geographic information of multiple candidate gateway stations and the data transmission of each candidate gateway station in the Ka frequency band Determine multiple target gateway stations among multiple candidate gateway stations, so as to establish Ka links with the multiple target gateway stations. The invention alleviates the technical problem that the conventional gateway site selection method cannot meet the system transmission capacity requirement for Ka frequency band satellite communication affected by rain attenuation.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method and system for selecting the site of a Ka-band gateway station considering rain attenuation. Background technique [0002] In the satellite mobile communication system, the choice of the gateway station is a necessary condition for obtaining successful communication services. At present, the principles widely used in site selection of gateway stations are: determine the constellation design parameters, analyze the coverage of each satellite in the constellation in its service area, determine the location and quantity of gateway stations according to the satellite coverage distribution, and then achieve utilization The least gateway station to achieve the purpose of the best communication rate. In addition to the above basic principles, it is generally necessary to combine actual communication needs and specific national conditions, and consider issues su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W16/22H04W64/00H04W84/06H04L1/00
CPCH04L1/0005H04L1/0016H04W16/18H04W16/22H04W64/003H04W84/06
Inventor 詹亚锋任淑倩曾冠铭
Owner TSINGHUA UNIV