摘要
研究了测向交叉定位系统中的最优交会角问题。在目标到两部被动传感器基线之间的垂直距离不同的情况下和最小圆概率误差(CEP)准则下,得出了一些有意义的结论。研究表明,最优交会角跟目标到两部传感器基线的垂直距离与基线长度的比值l有关。当l≥3^(1/2)/6时,只存在一个最优交会角且此时目标与两部被动传感器呈等腰三角形,并在此情况下分析了l的变化对圆概率误差的影响。当l<3^(1/2)/6时,存在两个相等的最优交会角。得出的结论在多个被动传感器的优化配置进而提高目标定位精度方面具有一定的理论和实际意义。
This article is concerned with the optimum cut angle in bearing-only location systems. By applying the criterion of minimum circular error probability （CEP） to the condition of different vertical distances between the target and the baseline of two passive sensors, some useful conclusions concerning the optimum cut angle are obtained. The optimum cut angle is dependent on l, the ratio of the vertical distance to the base line length. If l is greater than or equal to √3/6, there is one optimum cut angle and the deployment of the target and the two passive sensors should be an isosceles triangle with the baseline length as its base side. The relationship between the ratio l and the CEP is investigated too. If l is less than √3/6, there are two identical optimum cut angles. These conclusions can be used for reference in optimal deployment of muhiple passive sensors to obtain high location accuracy.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2009年第2期298-304,共7页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(60541001)
全国优秀博士学位论文作者专项基金(200443
200237)
"泰山学者"建设工程专项经费
关键词
传感器
概率
拉格朗日乘子
导数
计算机仿真
最优交会角
sensor
probability
Lagrange multipliers
derivatives
computer simulation
optimum cut angle
