CAJ | 학술논문

文章介绍了航天器轨道计算的基本流程,从数值上分析了时间和坐标转换、各种轨道摄动力及它们在不同的计算条件下,对轨道数值计算精度的影响,为各种应用提供简明信息.部分摄动如光压摄动、日月引力摄动对轨道计算精度的影响随着高度的增加而增大,而另一些如大气阻力及地球引力场模型的影响随着高度的增大而减小;对于低轨道航天器,由于飞行速度较快,总体加速度较大,因此误差的累积速度也较快,各种摄动的影响均较为明显.
문장개소료항천기궤도계산적기본류정,종수치상분석료시간화좌표전환、각충궤도섭동력급타문재불동적계산조건하,대궤도수치계산정도적영향,위각충응용제공간명신식.부분섭동여광압섭동、일월인력섭동대궤도계산정도적영향수착고도적증가이증대,이령일사여대기조력급지구인력장모형적영향수착고도적증대이감소;대우저궤도항천기,유우비행속도교쾌,총체가속도교대,인차오차적루적속도야교쾌,각충섭동적영향균교위명현.
We aim to provide compendious information on spacecraft orbit computation precision. Section 1 of the full paper briefs the basic program flow for computing the spacecraft orbit. Subsection 2.1 presents in Fig.1 and Table 1 the results of calculation on the effect of coordinate system transformation on spacecraft orbit computation precision. Subsections 2.2, 2.3, 2.4, 2.5, 2.6 and 2.7 present in ten tables the results of calculating the effects of: (1)time system transformation, (2)the simplified model of gravitation field, (3)the perturbation of atmospheric drag, (4)the perturbation of the third body gravitation, (5)the perturbation of sunlight pressure, (6)other perturbations. Section 4 gives the following preliminary conclusions: (1)the effects of the perturbation of sunlight pressure and the perturbation of the third body gravitation both increase with increasing orbit altitude; (2)the effects of other perturbations like perturbation of atmospheric drag and earth gravitation both decrease with increasing orbit altitude; (3)for low orbit spacecraft, because of larger velocity and acceleration, the effects of various perturbations are more obvious.