GPS跟踪站天线几何中心偏移量的测定

GPS跟踪站的天线位置数据是全球GPS的基准 ,精确测定GPS天线到基点的偏移量极为重要。针对跟踪站场地的现场情况 ,从测量基准的建立和测量方法两方面介绍采用非常规的方法精确测定天线的偏移量。该测量成果已被IGS中心认可。

A BROADBAND APERTURE-COUPLED STACKED MICROSTRIP ANTENNA WITH BOTH PATCHES NOTCHED AND OFFSET

This paper proposes a new approach to further improving the bandwidth of a typical aperture-coupled stacked microstrip antenna by cutting triangular notches in the radiating sides of both radiating patches together with offsetting both patches. An antenna applying this new approach is designed,fabricated,and tested. The experimental antenna could achieve a measured impedance bandwidth of about 37.5% for the Voltage Standing Wave Ratio(VSWR) ≤ 2in X-band.

GPS接收机检验的实例分析

GPS是一项正在蓬勃发展的高新技术,而GPS接收机检测技术却还是一个全新的研究课题。文中本着务实创新的精神,针对我国目前在GPS接收机检定领域中存在的问题,从理论和实践两个方面对GPS接收机检定技术进行了全面而系统的研究。提出了GPS接收机天线相位中心一致性检测以及在短基线RTK中的精度检测。