摘要
卫星在太空运行过程中,在周围等离子体和光电效应等综合作用下,会带上与周围等离子体环境不同的悬浮电位,这个电位会影响星上测量载荷的测量精度和测量范围。利用航天器与等离子体相互作用系统软件SPIS,采用粒子分室法模拟了低轨道(710km)卫星的充电特性。结果表明,由于等离子体温度低、浓度高,卫星的充电电位较低(-0.719V);而周围的等离子体环境受卫星尾迹效应的影响显著。
Satellite charging is the process of electrical charge accumulation on the satellite surface. It is caused by the impact of the charged plasma particles and solar ultraviolet radiation on the satellite surface. Satellite charging can influence the precision of satellite payloads and measuring ranges. The low earth orbit （710 kin） satellite charging was simulated by the SPIS （spacecraft plasma interaction system） software and the PIC （particle in cell） method. The results show that the charging potential is lower （ -0. 719 V）,and plasma sheath is influenced by wake effect evidently.
出处
《微纳电子技术》
CAS
2007年第7期25-27,共3页
Micronanoelectronic Technology
关键词
表面充电
低轨道
尾迹效应
surface charging
low earth orbit
wake effect
