复杂系统误差传递的主次作用分析与控制

系统观测目标误差渗透着系统误差和随机误差，系统误差和随机误差的分离与溯源理论和应用一直是误差分析的难点和热点。文中基于系统误差和随机误差的互相关系与传递特征，提出了以传递函数为基础的误差传递模型，并基于该模型，将复杂系统划分为若干个子系统，分析了各子系统在观测目标误差中的主次作用（ primary and secondary position a-nalysis，PSPA）。算例表明，该理论能够分析得出引起观测误差灵敏度较高的子系统，这对于误差溯源、分析和控制误差，提高观测目标的精度具有一定的指导意义。

The primary and secondary position analysis and control of error propagating for a complex system

System error and random error are usually included in the error of target parameter .The theory and application about the separation and tracing for both are always the hot and difficult topic in research .An error propagating model based on propagating function is proposed .The primary and secondary position analysis （ PS-PA） of the subsystem error propagating in the complex system is based on this model , while the whole complex system can be divided into several subsystems .An example shows that this model can analyze and determine the relative crucial subsystem in error tracing .There may be significant inspiration in how to find the origin of error and how to analyze and control the error .The most important is that the model proposed above provides a path for improving the accuracy of the target parameter .