LEO至HEO多阶段任务小卫星测控系统方案

TT&C System Scheme of Microsatellite Applied to LEO~HEO Multi-stage Tasks

针对部分需要在多种不同轨道高度和轨道类型下分阶段执行差异性工作任务的小卫星,对常规测控系统方案进行改进,提出应用于近地轨道(LEO)至高椭圆轨道(HEO)多阶段任务小卫星的测控系统方案。该方案集成度高,采用高灵敏度遥控接收,设置高/低2档发射功率,引入信道纠错编码,设置多档遥测发送速率,单独设置无合成干涉效应的大功率发射天线,采用支持“漏信号法”的高灵敏度全球导航卫星系统(GNSS)接收机等,可有效应对不同阶段星地距离大尺度变化和卫星姿态的指向变化。以中欧合作“太阳风-磁层相互作用全景成像”(SMILE)卫星为实例,验证了改进测控系统方案的可行性。改进后的测控系统方案,可应用于LEO至HEO多阶段任务的小卫星及其他航天器。

Aiming at some microsatellites that need to perform different working tasks at different orbital altitudes and types,the conventional TT&C system scheme is improved,and a TT&C system scheme that is suitable for LEO(low earth orbit)to HEO(highly elliptical orbit)multi-stage tasks of microsatellites is proposed.The proposed scheme is highly integrated,using high sensitivity of telecommand receivers,setting up high/low transmission powers,introducing channel error correction coding,setting multiple telemetry data rates,using separate high-power transmitting antennas without synthetic interference effect,using high sensitivity of GNSS(Global Navigation Satellite System)receivers that support leakage signal method.Thus it can effectively deal with large scale satellite-ground distance variation and different attitudes at different orbital stages.Taking the China-Europe cooperative SMILE(Solar wind Magnetosphere Ionosphere Link Explorer)satellite as an example,the feasibility of the modified TT&C system scheme is verified.The modified TT&C system scheme can be used in LEO~HEO multi-stage tasks for microsatellites and other spacecraft.