The synthetic aperture is a signal processing technique that collects signal samples across a spatial volume and generates a huge database that helps solve a wide array of problems. For example, a synthetic aperture radar (SAR) synthesizes the motion of a long antenna by combining received signals as it moves along a flight track and provides data with finer spatial resolution that help create 2D images and the 3D reconstruction of objects. Recently, the synthetic aperture has also applied to wireless channel sounding and the over-the-air calibration of wireless devices [1].

中文翻译：

---

IEEE 中无线信道探测标准的倡议 [标准]

合成孔径是一种信号处理技术，它在空间体积内收集信号样本并生成一个巨大的数据库，帮助解决各种问题。例如，合成孔径雷达 (SAR) 在长天线沿飞行轨迹移动时通过组合接收到的信号来合成长天线的运动，并提供具有更精细空间分辨率的数据，有助于创建 2D 图像和对象的 3D 重建。最近，合成孔径也应用于无线信道探测和无线设备的空中校准[1].