A LARGE SPHERICAL NEAR-FIELD ARCH SCANNER FOR CHARACTERIZING LOW-FREQUENCY PHASED ARRAYS
A LARGE SPHERICAL NEAR-FIELD ARCH SCANNER FOR CHARACTERIZING LOW-FREQUENCY PHASED ARRAYS
复制标题
用于表征低频相控阵的大型球形近场拱形扫描仪
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Kryzak
中科院分区：
文献类型：
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作者：
S. McBride;Jeffrey. P. Marier;C. Kryzak;J. Fordham;K. Liu;Jeffrey. P. Marier;C. Kryzak
洛克希德·马丁公司位于纽约锡拉丘兹的工厂已经委托了一个基于拱形结构的球形近场测量系统。该系统是为大型低频相控阵雷达的高保真测试而设计的。近场扫描系统由一个半径为9.5米的拱形结构和一个能够承载大型阵列的大方位轴组成，拱形结构具有主动探头位置误差校正功能。设计用于容纳测量系统的屏蔽消声室包括用曲线吸收器进行全面处理以实现UHF波段频率的低水平杂散信号，FM-200 / VESDA防火，以及用于消除雷达产生的热负荷的乙二醇基系统。整体测量系统的细节，沿着与机械精度实现的扫描仪系统。描述了腔室和主机设施的细节。最后给出了利用该系统对UHF波段标准增益喇叭的测量结果。将强调这种制度的挑战和好处。
An arch-based spherical near-field measurement system has been commissioned at Lockheed Martin’s facility in Syracuse, New York. This system is designed for highfidelity testing of large, low-frequency, phased-array radars. The near-field scanner system consists of a 9.5meter-radius arch with an active probe-position-error correction, and a large azimuth axis capable of carrying large arrays. The shielded anechoic chamber designed to house the measurement system includes full treatment with curvilinear absorber to achieve low levels of stray signal at UHF band frequencies, FM-200 / VESDA fire protection, and a glycol based system for removing heat loads generated by the radars. The overall measurement system details are presented, along with mechanical accuracies achieved for the scanner system. Details of the chamber and host facility are described. Finally, the paper concludes with measurements of a UHF-band Standard Gain Horn using the system. The challenges and benefits of such a system will be highlighted.