摘要
论述了微波全息测量中相关机的理论和基于FPGA的实现以及全息测量的基本方法,重点讨论了在FPGA上实现整个系统的关键和难点部分。整个设计在保证功能实现的基础上,把节约FPGA资源放在相当重要的位置来考虑,这些技术对基于FPGA的DSP系统设计有很好的借鉴意义。最后对相关机的输出数据进行了定性分析,说明了相关机工作的正确性与可靠性。本设计已在上海佘山站正式用作全息测量。
This paper describes in detail the principle of a correlator for microwave holographic measurement and the implementation of it based on FPGA. The descriptions include the basic method for holographic measurement, and are mainly on the designs of the key or complex components of the correlator on an FPGA chip . We bave given it particular importance in our designs to save resources on FPGA as these approaches can yield rather useful hints for practical design of DSP based on FPGA. Finally, we analyze and verify the output data from the correlator. Our design has been incorporated into the holographic measurement at the Seshan observational station in Shanghai
出处
《天文研究与技术》
CSCD
2009年第4期280-291,共12页
Astronomical Research & Technology
基金
天文专项:大型射电望远镜全息
关键词
FPGA
全息测量
相关机
FPGA, holographic measurement, correlator
作者简介
王锦清，男，硕士，研究方向：天文技术与方法Email ： jqwang@ shao. ac. cn
