多通道GPS共视法时频传递接收机的研制

Research on Multi - channel GPS Common - View Method Time & Frequency Transfer Receiver

GPS共视法是国际上流行的远距离时间频率传递技术,核心是共视法接收机。我们成功研制了多通道GPS共视法时频传递接收机系统,硬件部分主要由自主研制的高精度时间间隔计数器和Motorola生产的VPONCORE GPS引擎组成,软件符合时间频率咨询委员会(CCTF)发布的GPS共视法数据处理软件标准化指南的要求,与单通道GPS定时接收机相比,界面更友好,操作更方便,具有很强的分析处理数据功能。经测试证明多通道GPS接收机零基线共钟共视时间比对的不确定度小于4 ns(仰角40°),与国外报道基本相同。

Common - view method of satellites of the GPS is international prevalent technology for time & frequency transfer between remote clocks on the earch. Its kernel is the receiver of common - view method. The system of multi - channel GPS common - view method time & frequency transfer receiver is researched successfully. The handware is composed of high precision time interval counter and VP ONCORE engine made in Motorola company. The software is accord with standardization guide for data process software of GPS common-view method. Compared with single channel receiver, it has not only friendly interface and convenient operation but also has the strong ability of analyse and process data. After experimented, the time transfer uncertainty of multi - channel GPS receiver is less than 4 ns( elevation is more than 40 degree) in the condition of the comparision of common - view and common - clock on zero base line.