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构建脉冲模板是X射线脉冲星导航的一项关键技术,其精度与脉冲星角位置精度密切相关。基于脉冲模板构建的基本原理,推导得到了脉冲星角位置误差对脉冲模板构建影响的系统误差的年化平均以及任意弧段积分的解析表达式,分析了角位置误差对脉冲模板构建的影响。在此基础上,给出了削弱脉冲星角位置误差影响的方法。通过理论推导和仿真分析,验证了误差削弱方法的有效性,可以为优化X射线脉冲星的观测任务以及X射线脉冲模板构建提供参考依据。
The construction of pulse template is a key technology of X-ray pulsar navigation, the accuracy of which is closely related to the position accuracy of pulsar star. Based on the basic principle of impulse template construction, the annual average of systematic errors affecting impulse star position error on impulse template construction and the analytic expression of arbitrary arc integral are deduced. The influence of angular position error on impulse template construction is analyzed. On this basis, the method to weaken the influence of the position error of pulsar angle is given. Through the theoretical derivation and simulation analysis, the validity of the error reduction method is verified, which can provide reference for optimizing the observation task of X-ray pulsar and the construction of X-ray pulse template.