行星际等离子区对火星探测器距离观测量的影响  

Effects of Delay on Range Measurement Due to the Interplanetary Plasma for the Mars Probe

作　　者：李杰[1] 胡松杰[2] 

机构地区：[1]解放军信息工程大学测绘学院,河南郑州450052 [2]北京航天飞行控制中心,北京100094

出　　处：《海洋测绘》2010年第2期32-34,共3页Hydrographic Surveying and Charting

摘　　要：根据Muhleman和Anderson在1981年给出的行星际空间等离子体密度模型,模拟计算了行星际等离子区对8GHz电波的距离延迟与太阳-地球-航天器夹角(SEP)和光路径长度(L)的关系。结果显示,在本文的模拟条件下,距离延迟随SEP和L从几毫米变化到几十米。最后,分别仿真了一条地火转移轨道和环火星轨道,计算了两种情况下行星际等离子区延迟对测站到航天器距离观测量的影响。Based on the plasma density model proposed by Muhleman and Anderson in 1981 ,this paper simulates the light time delay in the range measurement with a frequency of 8GHz due to the interplanetary plasma. The result shows that the delay varies with the Sun-Earth-Probe angle （SEP） and the length of light path, from a few millimeter to several decameters. The paper also simulates an interplanetary orbit from the Earth to the Mars as well as a Martin probe orbit, and calculates the light time delay in the range measurement from the probe to the ground station.

关 键 词：行星际等离子区延迟 电子密度模型 距离观测量 误差量级 太阳-地球-探测器夹角 

分 类 号：P228[天文地球—大地测量学与测量工程]