區(qū)域覆蓋共地面軌跡星座的優(yōu)化設(shè)計(jì)
The Design of Optimized Common-Track Constellation for Regional Coverage
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摘要: 該文討論了使用中軌共地面軌跡星座建立區(qū)域覆蓋衛(wèi)星通信系統(tǒng)的優(yōu)化設(shè)計(jì)方法。在深入研究共地面軌跡星座參數(shù)特性的基礎(chǔ)上，提出了一種能夠完整描述該類型星座的編碼標(biāo)識(shí)方法，推導(dǎo)了星座與星座的等價(jià)關(guān)系，討論了利用該類型星座實(shí)現(xiàn)區(qū)域覆蓋時(shí)的優(yōu)化方法，給出了適用于我國(guó)的多個(gè)優(yōu)化星座方案實(shí)例。從仿真結(jié)果可以看出，該類型星座能夠以較少數(shù)量的衛(wèi)星為我國(guó)提供良好的覆蓋性能，適于我國(guó)的區(qū)域覆蓋衛(wèi)星通信系統(tǒng)采用。
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關(guān)鍵詞:
- 衛(wèi)星通信;共地面軌跡星座;區(qū)域覆蓋;星座
Abstract: An optimization design method for implementing regional coverage satellite system with common-track constellation is proposed. Based on a thorough investigation on the parametric characteristics of the common-track constellation, a coded notation which can describe this type of constellation entirely is proposed and the restricted equivalent relationship to the Walkers constellation is given. The optimized method of common-track constellation for regional coverage is studied, and some optimal constellation schemes for China are presented. The simulation results show that the optimized common-track constellation can provide favorable coverage performance to China area with fewer satellites. The designed constellations are appropriate for the regional coverage satellite system of China. -
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