常用统计法处理实验室间比对结果的探讨

文章浅谈实验室之间检测结果比对的一些处理方法,通常使用的相对误差统计法优点是计算简便,缺点是往往需要配制多个浓度待检样品以防止实验室间互通数据。标准偏差统计法几乎适用于任何实验室数据比对的统计,但受极端数值的影响导致算数平均值偏离,容易犯取伪的错误。而Z比分数稳健统计法,既不受离群值的影响,也不受标准参考值的影响,能较为严格的评判离群数值,是标准化的数据评定方法。

Influence of Synchronization Impairments on an Experimental TDOA/FDOA Localization System

In Electronic Warfare, and more specifically in the domain of passive localization, accurate time synchronization between platforms is decisive, especially on systems relying on TDOA （time difference of arrival） and FDOA （frequency difference of arrival）. This paper investigates this issue by presenting an analysis in terms of final localization performance of an experimental passive localization system based on off-the-shelf components. This system is detailed, as well as the methodology used to carry out the acquisition of real data. This experiment has been realized with two different kinds of clock. The results are analyzed by calculating the Allan deviation and time deviation. The choice of these metrics is explained and their properties are discussed in the scope of an airborne bi-platform passive localization context. Conclusions are drawn regarding the overall localization performance of the system.

大误差条件下空中平台光电载荷系统误差标校

针对传统的空中平台光电载荷系统误差标校方法在实际大误差的测量条件下无法对系统误差进行准确标校的问题,根据实际应用的特点提出系统误差标校方法,将误差量进行分组,制定并利用了具有较强抗干扰能力的模糊评价法则与偏差统计法对分组后的误差量分别进行识别,对系统误差进行了标校.实际飞行试验证明提出的系统误差标校方法适合工程实践中大误差条件下的数据处理.