风云系列近地轨道卫星整流罩透波口设计方法

Design Method of Wave through Mouth of Fengyun Series Low Earth Orbit Satellite Fairing

针对风云系列近地轨道卫星铝合金蜂窝夹层结构的整流罩对无线电信号具有屏蔽功能,若在整流罩抛弃前接收卫星信号以监视卫星状态,就需要在卫星整流罩上开设透波口。提出了根据运载火箭理论飞行弹道设计结果和测站位置,计算测站跟踪运载火箭或卫星时,测量线在各时间节点的α和β角,并根据卫星天线装箭状态下在整流罩内的相对位置关系,精确计算测量线在整流罩壳体上轨迹的方法,设计出满足测站接收卫星信号的整流罩透波口开设的最小区域。既实现了整流罩抛弃前对卫星状态的监视,又最大限度地减小对卫星整流罩结构强度的影响,确保卫星整流罩的安全。

Fengyun series low earth orbit satellite fairing with aluminum alloy honeycomb structure has shielding function for radio signal.To receive satellite signal to monitor the satellite status before discarding the fairing,it needs to open a wave through mouth in the fairing.According to the designated orbit of the launch vehicle and the position of station,theαandβangles of measuring line of tracking launch vehicle or satellite are calculated at each time node,and the projective line of the measuring line on the shell is also calculated according to the relative location of satellite in the fairing.Then,the minimum zone can be obtained,which can receive the satellite signal.It realizes the monitor of the satellite before the satellite discards fairing.Meanwhile,the affection is minimized for the structure strength of the fairing to ensure the safety of the fairing.