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直升机起飞和着陆过程中,高效的态势感知至关重要。三维态势感知需解决高精度测量和电力线检测两大难点。文中首先介绍了窄波束、虚拟孔径、高度维干涉、俯仰超分辨四种提高测量精度的途径;然后,对电力线的散射特性进行了分析研究;最后,利用一部毫米波雷达,获取了电力线实际回波数据,并进行了初步验证。
Helicopter takeoff and landing process, efficient situational awareness is crucial. Three-dimensional situational awareness needs to solve two difficult problems of high-precision measurement and power line detection. In this paper, four approaches to improve the accuracy of measurement, such as narrow beam, virtual aperture, high-dimensional interference and pitch super-resolution, are introduced firstly. Then, the scattering characteristics of power line are analyzed and studied. Finally, a millimeter-wave radar is used to obtain the actual Echo data, and conducted a preliminary verification.