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摄动因素对火星环绕段轨道长期影响研究
李建军1, 王大轶1,2
1.北京控制工程研究所, 北京 100090;2.空间智能控制技术国家重点实验室, 北京 100090
摘要:
针对未来火星探测需要,研究了摄动因素对火星环绕段轨道的长期影响。对各种摄动因子的数量级进行了估计,根据估计结果,对比选取了起主导作用的摄动因子;建立了主要摄动因子的数学模型;通过数值仿真验证,对比分析了火星和地球的相应摄动因素对各自环绕段轨道半长轴和偏心率的影响。仿真结果表明:非球形摄动对火星环绕段轨道的影响具有明显的长周期特征,而相应的地球环绕段短周期效应较明显,这主要是由于质量分布不同造成火星非球形引力位中田谐项的系数基本都比地球的相应值大一个量级,因此在实际轨道设计中应该重点考虑高阶项特别是高阶田谐项对环绕段轨道造成的影响。
关键词:  火星;环绕段;摄动分析;长周期效应
DOI:10.15982/j.issn.2095-7777.2017.01.012
分类号:
基金项目:国家杰出青年科学基金项目资助(61525301)
The Analysis for Long-Term Influence of Perturbations on Orbit Around Mars
LI Jianjun1, WANG Dayi1,2
1.Beijing Institute of Control Engineering, Beijing 100090, China;2.Science and technology on Space Intelligent Control Laboratory, Beijing 100090, China
Abstract:
Aiming at the need for the exploration of Mars in the future,the paper studies the long-term influence of perturbations on orbit around Mars.by computing magnitude,main perturbations are selected. And then mathematical model for them are constructed. Finally,numerical simulation verifies the relevant theoretical analysis. The simulation results show that the influence of non-spherical perturbations on orbit around Mars has obvious characteristics of long period,compared with the earth. This is mainly because the coefficient of the non-spherical gravitational potential harmonic terms of Mars are playing an order of magnitude than the earth due to the different mass distribution. So potential harmonic terms of Mars should be paid more attentions when designing orbit around Mars.
Key words:  Mars;orbit round Mars;perturbations analysis;long period effect