天线旁瓣 meaning in English

antenna minor lobe
antenna side lobe
antenna sidelobe

Study on sar antenna side lobe reconnaissance
卫星天线旁瓣信号侦察研究
During the equipment works outside , it is the key to accurately judge whether there exists lifeforms under the debris . because the detected signals are complicated , including human life - parameter signals , environmental interference , radar sub - lobe clutter and noise of the whole system , it greatly reduces the signal - to - noise ratio ( snr ) of the life - parameter signals and makes it difficult to identify the lifeforms
由于实际探测中检测到的信号成分十分复杂，不仅包括人体的生命参数（呼吸、心跳）信号，而且还含有各种干扰，如外围环境的干扰（风、天线抖动、工作人员走动等）信号、雷达天线旁瓣引人的干扰信号、整机系统噪声等，大幅度降低了系统的信噪比，为生命体识别带来困难。