EARS: Modeling and Analysis of Radar / Communications Spectrum Sharing Opportunities

这项研究工作的重点是4G/LTE无线设备（如手机发射塔和智能手机）可能对在4200-4400 MHz频段工作的雷达高度计产生的影响。 基于政府将该波段确定为商业蜂窝用途的潜在候选者，频谱特性和对这些飞机着陆雷达的操作的潜在影响对广大受众来说变得极其重要。 最近韩亚航空公司航班的坠毁增加了对这些雷达的操作的关注。为了获得这种理解，将开展一项重要的频谱测量活动，重点是适当的雷达高度计系统和4G/LTE系统。 测量将使用实际和/或模拟设备量化4G/LTE对雷达高度计性能的影响。这些衡量结果将为进行详细分析工作提供依据，以衡量在各种条件下预期的影响程度。 这些信息需要迅速有效地传播给无线研究界的其他人，重要的是传播给电信政策领域的各种决策者。

This research effort focuses on the impact that 4G/LTE wireless devices (e.g. cell towers and smart phones) may have on radar altimeters operating in the 4200-4400 MHz spectral band. Based on the identification of this band by the government as a potential candidate for commercial cellular use, the spectral characteristics and potential impact to the operation of these airplane landing radars has become extremely important to a broad audience. The recent crash of the Asiana Airlines flight has added to the focus on the operation of these radars.To obtain this understanding, a significant spectrum measurement campaign will be undertaken focused on appropriate radar altimeter systems and on 4G/LTE systems. The measurements will quantify the effects of 4G/LTE on radar altimeter performance using actual and/or simulated equipment. These measurement results will provide a basis for performing the detailed analysis work required to gauge the level of impact that would be expected under a variety of conditions. This information will need to be quickly and effectively disseminated to others in the wireless research community and importantly to various decision-makers in the telecommunications policy realm.