CAJ | 학술논문

针对传统局部最优检测器在显著非高斯杂波背景下导致检测性能下降的问题，该文提出一种分数低阶局部最优雷达目标检测方法。首先对局部最优检测器的模型进行简化，在此基础上，根据分数低阶统计量理论，利用分数低阶相关矩阵描述杂波的相关特征，并以分数低阶二次型作为局部最优检测器的权值，改善了显著非高斯杂波背景下的雷达目标检测性能。利用仿真数据和IPIX雷达数据进行实验分析，结果表明，针对显著的非高斯杂波背景下的弱目标信号，相对于传统的局部最优检测方法，该文方法的检测性能显著提高。
침대전통국부최우검측기재현저비고사잡파배경하도치검측성능하강적문제，해문제출일충분수저계국부최우뢰체목표검측방법。수선대국부최우검측기적모형진행간화，재차기출상，근거분수저계통계량이론，이용분수저계상관구진묘술잡파적상관특정，병이분수저계이차형작위국부최우검측기적권치，개선료현저비고사잡파배경하적뢰체목표검측성능。이용방진수거화IPIX뢰체수거진행실험분석，결과표명，침대현저적비고사잡파배경하적약목표신호，상대우전통적국부최우검측방법，해문방법적검측성능현저제고。
The target detection performance of the locally optimum detector descends in the bad non-Gaussian clutter environment. To deal with this problem, a radar target detection method based on the fractional lower order locally optimum is proposed. First, thesimplified locally optimum detector is obtained, then, based on the fractional lower order statistics theory, the fractional lower order correlation matrix expresses the clutter correlation and the fractional lower order quadratic form is proposed as the weight of the locally optimum detector to improve the radar target detection in a non-Gaussian correlated clutter background. Simulations and IPIX radar data results show that, the detection performance of the proposed method obviously outperforms the locally optimum detector in the non-Gaussian badly clutter environment for the weak target.