EARS: Joint Circuit and Waveform Optimization for Cognitive, Spectrally Confined Radar Transmission

认知、频谱受限雷达传输的联合电路和波形优化智能优点：由于新的无线宽带设备的不断开发和使用以及由此导致的频谱拥塞，未来的雷达系统将需要以频率灵活的认知方式执行其始终至关重要的社会和军事功能。为了促进这一新的范式，本研究涉及到一种具有联合优化电路和波形的自适应雷达发射机，该发射机可以根据附近通信节点的位置在动态变化的频谱掩模内工作。这项研究的具体智能和科学目标是：(1)创建一种实用的电路优化方法，以获得线性度和效率；(2)创新一种方法，以优化雷达波形以满足频谱顺应性和所需的检测/模糊特性；(3)同时优化可重构雷达发射机中的波形和匹配网络；(4)调查额外信息来源以加快搜索速度；以及(5)推荐一种基于雷达发射机和通信节点的相对位置的动态雷达频谱掩模构建方法。拟议的工作将为认知雷达系统提供技术，使其能够随着雷达工作频率的变化而存在于动态频谱接入环境中，并将根据周围环境和潜在的干扰受害者来优化雷达检测能力和功率效率。这项工作是跨学科的，融合了射频/微波电路和强大的智能/优化领域的工作，以实现雷达/通信共存的变革性范式转变。更广泛的影响：为了从政策和经济角度获得专家意见，首席研究员将与一个多学科指导委员会一起，在他们已经成功的德克萨斯无线和微波电路和系统研讨会上增加一个频谱论坛。研究小组已经建立了合作关系，将这项研究的结果引导到相关的监管工作中，并已经参与了北大西洋公约组织频谱工程研究任务组的工作。首席调查员还将通过与德克萨斯州中部地区的学校合作，继续成功地对高中生进行频谱问题以及科学、技术、工程和数学职业的教育。国际和平研究所的研究小组在其研究小组中有重要的女性和少数族裔代表的历史，将这项研究安排在一所有大量女性参与工程的大学将使这笔赠款能够继续让代表不足的群体参与研究

Joint Circuit and Waveform Optimization for Cognitive, Spectrally Confined Radar TransmissionIntellectual Merit: Due to the continued development and use of new wireless broadband devices and the resultant congestion of the spectrum, future radar systems will be required to perform their ever-critical societal and military functions in a frequency-flexible, cognitive manner. To facilitate this new paradigm, this research involves investigation of an adaptive radar transmitter with jointly optimizable circuit and waveform to operate within a dynamically varying spectral mask based on locations of nearby communication nodes. The specific intellectual and scientific aims of this research are to (1) create a useful circuit optimization approach for linearity and efficiency, (2) innovate an approach to optimize the radar waveform for spectral compliance and desired detection/ambiguity properties, (3) simultaneously optimize the waveform and matching networks in the reconfigurable radar transmitter, (4) investigate sources of additional information to speed the search, and (5) recommend an approach for dynamic radar spectral mask construction based on the relative locations of the radar transmitter and communication nodes. The proposed work will provide enabling technology for cognitive radar systems to exist in a dynamic spectrum access environment with changes in radar operating frequency, and will also allow optimization of radar detection capabilities and power efficiency based on the surrounding environment and potential victims of interference. This work is interdisciplinary, fusing work in areas of RF/microwave circuitry and robust intelligence/optimization to accomplish a transformative paradigm shift in radar/communications coexistence. Broader Impacts: For the purpose of garnering expert input from policy and economic perspectives, the principal investigator, along with a multidisciplinary steering committee, will add a Spectrum Forum to their already successful Texas Symposium on Wireless and Microwave Circuits and Systems. The research team has constructed collaborations to channel outcomes of this research into relevant regulatory efforts and already underway involvement in the North Atlantic Treaty Organization Research Task Group on Spectrum Engineering. The principal investigator also will continue successful efforts in educating high school students about spectrum issues and science, technology, engineering, and math careers by partnering with schools in the Central Texas region. The research group of the PI has a history of significant female and minority representation in his research group, and the placement of this research at a university with significant female involvement in engineering will allow this grant to continue to involve underrepresented groups in research