SBIR Phase II: Multi-Frequency Low-Multipath Small Antennas for High Accuracy GPS

SBIR 第二阶段：用于高精度 GPS 的多频低多路径小型天线

• 批准号: 0450524
• 负责人: Francesca Scire-Scappuzzo
• 金额: --
• 依托单位: Physical Sciences Incorporated (PSI)
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-15 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450524&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Multi; Frequency

This Small Business Innovation Research (SBIR) Phase II research project will consist of the design, development, and manufacturing of a novel low-multipath GPS antenna for high accuracy applications. This antenna prototype utilizes two key technologies: (1) a new design of GPS antennas using high-technology materials and manufacturing methodologies, that enables low-multipath, gain control, multi-frequency, tunability, and size reduction; and ( 2) a novel geometry of the metal ground plane to further rejects multipath interference. At the end of Phase II the anticipated results include, multipath error mitigation uniformly at L-Band, gain improvement at low elevation angles up to 10 dB with respect to choke ring antennas, multi-frequency operation at GPS and GALILEO frequencies, and at least 33% smaller size than other commercial low multipath antennas.Because multipath interference reduction significantly improves GPS accuracy, the proposed multi-frequency GPS antenna will benefit the international scientific community that relies on high precision GPS for new advances in Earth and atmospheric sciences. In particular, the novel substrate antenna will allow accurate real-time GPS measurements, otherwise impossible, in support of the NSF funded EarthScope program, that is intended for the study of the structure and evolution of the North America continent using a network of GPS receivers.

该小型企业创新研究（SBIR）第二阶段研究项目将包括设计，开发和制造一种用于高精度应用的新型低多径GPS天线。该天线原型采用了两项关键技术：（1）采用高科技材料和制造方法的GPS天线新设计，可实现低多径、增益控制、多频、可调谐性和尺寸减小;以及（2）金属接地层的新几何形状，以进一步抑制多径干扰。在第二阶段结束时，预期的结果包括，在L波段均匀地减轻多径误差，相对于扼流环天线在低仰角处的增益提高高达10 dB，在GPS和GALILEO频率处的多频操作，以及比其他商用低多径天线小至少33%的尺寸。建议的多频全球定位系统天线将有利于依赖高精度全球定位系统在地球和大气科学方面取得新进展的国际科学界。特别是，新型基板天线将允许精确的实时GPS测量，否则不可能，以支持NSF资助的EarthScope计划，该计划旨在使用GPS接收器网络研究北美大陆的结构和演变。