摘要
低空慢速小目标的探测问题必须考虑多路径效应。本文首先建立多路径模型,推导出了雷达探测低慢小目标时直射信号与反射信号的叠加场强。定义场强波动因子,结合反射信号相对于直射信号的相位关系,得到了在多路径效应下雷达对探测低慢小目标的影响。仿真分析了影响效果,提出了克服多路径效应应采取的方法和措施。
Muhipath effect must be taken into account when it comes to the low-altitude, slow, small （LSS） target detection. A muhipath model is established firstly, and the superposed field in- tensity of the direct signals and the reflected signals is derived when the LSS targets are detected. With the field intensity fluctuation factor defined and the phase relationship of the reflected signals relative to the direct signals combined, the influence of the multipath effect on the LSS target detec- tion is obtained. The influence effects are analyzed through the simulation, and the measures of o- vercoming the multipath effect are put forward.
出处
《雷达与对抗》
2013年第3期15-17,21,共4页
Radar & ECM
关键词
多路径效应
低慢小目标
场强
multipath effect
LSS target
field intensity
