| 1. | On the study of the high dynamic flight characters of re - entry spacecrafts , positioning method of dynamic correction is brought forward
接着结合载体高速运动的特性，提出了动态修正的定位方法。 |
| 2. | The design of valve cam is mainly to design cam profile curve and is carried out in " dynamics correction method " in this paper
配气凸轮的设计主要就是设计凸轮廓形，本文选用“动力学修正法”进行设计。 |
| 3. | This method is based on the bent ionosphere model and the coefficient of dynamic correction is introduced into traditional cosine correction model to achieve dynamic correction of ionosphere delay . so the position error of over correction can be overcomed
该方法以bent电离层模型为基础，在余弦电离层修正模型的基础上，引入动态修正系数，从而克服了采用通常修正方法带来的过修正误差。 |
| 4. | The results show that the accuracy can be improved above 150 km after using the dynamic correction method and the processed data can meet real - time requests after being filtered . the results and simulation methods can be used for reference in engineering practise
本文提出的动态修正方法、通过预测滤波满足实时性要求以及仿真过程中采用的仿真方法和手段，在工程实践中有一定的实用价值和借鉴意义。 |
| 5. | While according to dynamics correction method , the valve displacement curve has to be design , which can be acquired by boundary condition and calculation method . then by dynamics analysis , the tappet displacement curve equation can be obtained based on the dynamics differential equation . thus , the design of cam profile can be carried out based on the tappet displacement curve equation
按照动态设计的动力学修正方法进行设计时，又得先进行气门升程曲线的设计，利用一定的边界条件和计算方法得到气门确定的运动规律，再通过动力学分析，根据建立的动力学微分方程，经过计算得到挺柱的升程曲线方程，至此，就可以根据挺柱的升程曲线进行凸轮轮廓曲线的设计。 |
| 6. | Then , gps error sources and their influences on positioning accuracy are analyzied . moreover , we simulated the gdop changes along the whole trajectory to decide the best poiont for gps receiver to start working . finally , the dynamic correction method and predictive , filter are simulated and validated via advanede simulation and modeling platform
最后采用先进仿真平台对动态修正定位方法和定位信息实时性预测进行仿真验证，结果表明，通过动态电离层延迟修正，在150km以上高空能有效提高定位精度；采用预测滤波后，能使得定位结果达到实时性精度的要求。 |
