随着GNSS时间传递技术的不断发展,接收机天线温度的变化成为影响/限制GNSS时间传递精度的一个重要因素。依据接收机天线的工作特性,通过研究温度控制算法,提出一种基于FPGA的GNSS接收机天线的双制式恒温系统设计方法。经过测试,该恒温系统内温度可控制在±0.25℃,达到高精度时间比对的要求。
With the development of GNSS time transfer technology, the temperature change of GNSS receiver antenna becomes one of the important factors which may affecting or limiting the precision of GNSS time transfer. According to the operation performance of the GNSS receiver antenna, a design of temperature stabilized system based on FPGA for GNSS receiver antenna is presented in this paper by studying the temperature control algorithms. The test results show that the temperature fluctuation in the temperature stabilized system is controlled within ±0.25℃, which can meet the requirement for higher precision time comparison.