基于圆概率误差的定位精度评定办法

摘要

圆概率误差(CEP)常用来表示炮弹、导弹命中精度和导航定位精度.它有几种不同的定义及简化计算方法,若不根据具体使用情况对样本数据进行分析而采用简化公式进行计算就容易导致错误,因此,详细分析了圆概率误差的几种定义、简化计算方法及各自的适用范围,从最基本定义出发,利用Matlab编制了计算软件,并以某型无人机侦察装备定位精度试验数据为例进行了实际计算,结果表明计算方法正确可靠,能准确评价被试装备的定位精度.%CEP is used to describe the shooting accuracy of shell, missile or positioning accuracy of navigation. It has several different definitions and corresponding different calculation methods. If the specific application is not considered and uses the simplified calculation formula to calculate, it is easy to cause the error. The definition, calculation methods and range of application of CEP is analyzed in this paper, from the basic definition, the calculating software of CEP is programmed by use of Matlab software. An example of CEP calculation is given on the data of positioning accuracy test of one type of unmanned aerial vehicle reconnaissance equipment, and the calculation result shows that the calculation method is correct and reliable, it can accurately calculate CEP and evaluate positioning accuracy of the test equipment.