CAJ | 학술논문

针对时空相关K 分布(C-KD)杂波背景中扩展目标的滑窗积累检测(SWAD)与顺序统计滑窗积累检测(OS-SWAD)的性能分析问题，采用广义 K 分布拟合、矩匹配、相关数据中的有效样本尺寸估计以及分数阶顺序统计等方法，获得了零假设条件下检验统计量的概率分布函数的拟合表达式，建立了虚警概率、恒虚警检测门限以及杂波参数之间的关系方程，并通过蒙特卡罗仿真实验对各种概率分布函数的拟合精度以及给定检测门限下的虚警控制精度进行了评估。理论分析与仿真实验表明本文提出的方法是合理和有效的。
침대시공상관K 분포(C-KD)잡파배경중확전목표적활창적루검측(SWAD)여순서통계활창적루검측(OS-SWAD)적성능분석문제，채용엄의 K 분포의합、구필배、상관수거중적유효양본척촌고계이급분수계순서통계등방법，획득료령가설조건하검험통계량적개솔분포함수적의합표체식，건립료허경개솔、항허경검측문한이급잡파삼수지간적관계방정，병통과몽특잡라방진실험대각충개솔분포함수적의합정도이급급정검측문한하적허경공제정도진행료평고。이론분석여방진실험표명본문제출적방법시합리화유효적。
To address the problem of performance analysis of sliding-window-accumulation detection (SWA)and order-statistics sliding-window-accumulation detection (OS-SWA)of extended target under space-time correlated K-distributed (C-KD)clutter background,the approximate PDF expressions for the test statistics under null hypothesis were derived on the basis of the theory of generalized K-distribution fitting,moment matching,effective sample size estimation of relevant data and fractional order statistics computing.The relationships between false-alarm probability,CFAR detection threshold and clutter pa-rameters were established.Monte-Carlo test was used to evaluate the precision of the fitted PDF and the false-alarm-rate controlled by the given detection threshold.The effectiveness and reasonableness of the proposed methods has been demonstrated with theoretical analyses and simulation experiments.