CAJ | 학술논문

　　针对部分均匀环境中存在干扰时的机载雷达检测问题，该文提出一步广义似然比(1S-GLRT)和两步GLRT(2S-GLRT)检测器。基于上述检测器，在小训练样本情况下进一步提出了降秩 GLRT(RR-GLRT)和对角加载 GLRT(DL-GLRT)。新检测器均能有效地抑制干扰并实现目标检测，在小训练样本情况下 RR-GLRT 和 DL-GLRT比1S-GLRT和2S-GLRT具有更好的检测性能。1S-GLRT和2S-GLRT均具有恒虚警(CFAR)特性，RR-GLRT和DL-GLRT具有渐近CFAR特性。最后通过计算机仿真验证了所提多通道空时自适应检测器的有效性。
　　침대부분균균배경중존재간우시적궤재뢰체검측문제，해문제출일보엄의사연비(1S-GLRT)화량보GLRT(2S-GLRT)검측기。기우상술검측기，재소훈련양본정황하진일보제출료강질 GLRT(RR-GLRT)화대각가재 GLRT(DL-GLRT)。신검측기균능유효지억제간우병실현목표검측，재소훈련양본정황하 RR-GLRT 화 DL-GLRT비1S-GLRT화2S-GLRT구유경호적검측성능。1S-GLRT화2S-GLRT균구유항허경(CFAR)특성，RR-GLRT화DL-GLRT구유점근CFAR특성。최후통과계산궤방진험증료소제다통도공시자괄응검측기적유효성。
The one-Step Generalized Likelihood Ratio Test (1S-GLRT) and two-Step GLRT (2S-GLRT) are proposed for the problem of adaptive detection for airborne radar with jamming in partially homogeneous environments. Basing on these detectors, the Reduced-Rank GLRT (RR-GLRT) and Diagonally Loaded (DL-GLRT) are introduced in the situation of low sample support. All the novel detectors can effectively suppress the jamming and detect the targets. Moreover, if the number of the training data is low, the RR-GLRT and DL-GLRT can achieve higher Probabilities of Detection (PD’s) than those of the 1S-GLRT and 2S-GLRT. Both the 1S-GLRT and 2S-GLRT possess the Constant False Alarm Rate (CFAR) property, while the RR-GLRT and DL-GLRT are asymptotically CFAR. The effectivity of the novel multichannel space-time adaptive detectors is verified with computer simulation.