实测毫米波雷达安装后的辐射方向图，解决现场校准难题。
Hemispherical Angular Power Mapping of Installed mmWave Radar Modules Under Realistic Deployment Constraints
- 用可调位置探头扫描设备周围半球空间，实现原位测量。
- 60GHz雷达实测结果与仿真趋势一致，重复性好。
- 适合嵌入式毫米波传感器的现场部署验证。
在实际感知系统中，毫米波（mmWave）雷达模块的安装环境（如封装、支架及附近结构）会显著改变其有效发射特性。然而，一旦设备被嵌入宿主环境，传统的腔体和转台式天线测量方法往往不可行。本文提出一种针对已安装毫米波模块的半球形角度接收功率映射方法，可在真实部署条件下进行电磁场原位验证。该方法通过几何一致的定位方式，将校准过的接收探头置于预设的(φ, θ, r)位置，对静止的待测设备进行半球空间采样，并使用标准射频仪器记录幅度仅的接收功率，生成反映安装依赖特性的半球形角度功率图。对60 GHz雷达模块的初步验证表明，该方法可实现重复性良好的半球映射，其角度趋势与全波仿真结果高度一致，支持嵌入式毫米波发射器的实际现场表征。
原文摘要 · Abstract (English)
Characterizing the angular radiation behavior of installed millimeter-wave (mmWave) radar modules is increasingly important in practical sensing platforms, where packaging, mounting hardware, and nearby structures can significantly alter the effective emission profile. However, once a device is embedded in its host environment, conventional chamber- and turntable-based antenna measurements are often impractical. This paper presents a hemispherical angular received-power mapping methodology for in-situ EM validation of installed mmWave modules under realistic deployment constraints. The approach samples the accessible half-space around a stationary device-under-test by placing a calibrated receiving probe at prescribed (phi, theta, r) locations using geometry-consistent positioning and quasi-static acquisition. Amplitude-only received-power is recorded using standard RF instrumentation to generate hemispherical angular power maps that capture installation-dependent radiation characteristics. Proof-of-concept measurements on a 60-GHz radar module demonstrate repeatable hemi-spherical mapping with angular trends in good agreement with full-wave simulation, supporting practical on-site characterization of embedded mmWave transmitters.
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