采用单GPS和差波束接收机的基站天线工参方位角测量技术

Azimuth Angle Measurement of Base-Station Antenna by Single GPS Receiver with Sum-Differential Patterns

蜂窝通信基站天线工参测量中,方位角的测量技术挑战最大。首先介绍了传统的双GPS接收机的差分相位测量法与和差波束天线测向方法,提出了采用低增益和差波束天线和单个GPS接收机进行基站天线方位角测量的方法,介绍了一种差波束天线的设计方案,并给出了差波束天线接收GPS信号的实测结果验证了性能。

The antenna attitude parameters are critical information in the optimization of cellular base station networks.Compared with the height and tilting angle,the azimuth pointing angle is the most challenging to be measured.In this paper,the traditional dual-GPS phase-differential direction finding method is briefly introduced.Then,the sumdifferential direction finding method is discussed.Traditional sum-differential method adopts high gain antenna,due to its requirement of single signal source in the main antenna beam.In this paper,a novel direction finding method is proposed,which uses low gain sum-differential antenna and single GPS receiver.The differential antenna design used in the field test is also given.The field test with a single GPS receiver is carried out and the result is presented.