中文摘要：

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。

英文摘要：

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.