beyond 0.6.6

安装

beyond需要python 3.5+、numpy和sgp4。 要安装库及其依赖项，请使用pip

pip install beyond

文档

• Last release (stable)
• Dev (latest)

用法

importnumpyasnpfrombeyond.io.tleimportTlefrombeyond.framesimportcreate_stationfrombeyond.datesimportDate,timedelta# Parse TLEtle=Tle("""ISS (ZARYA)
1 25544U 98067A   19072.15347313  .00000167  00000-0  10147-4 0  9997
2 25544  51.6420 118.6717 0004098  99.2855 123.2259 15.52799885160336""")# Create a station from which to compute the passstation=create_station('KSC',(28.524058,-80.65085,0.0))fororbinstation.visibility(tle.orbit(),start=Date.now(),stop=timedelta(days=1),step=timedelta(minutes=2),events=True):# As all angles are given in radians,# there is some conversion to doazim=-np.degrees(orb.theta)%360elev=np.degrees(orb.phi)r=orb.r/1000.print("{event:10} {tle.name}  {date:%Y-%m-%dT%H:%M:%S.%f} {azim:7.2f} {elev:7.2f} {r:10.2f}".format(date=orb.date,r=r,azim=azim,elev=elev,tle=tle,event=orb.eventiforb.eventisnotNoneelse""))# Stop at the end of the first passiforb.eventandorb.event.info=="LOS":break

此库用作Space-Command实用程序的基础。

这个库的常用用法是：

• Predicting of satellite visibility
• Computing satellite ground track
• Computing planets visibility

参考文献

许多公式和飞行动力学算法都是基于vallado的 天体动力学与应用基础第4版。