›› 2016, Vol. 29 ›› Issue (3): 157-.

• 论文 • 上一篇    下一篇

基于PN码的多通道幅相测量设备设计及实现

张传林,孙垂强   

  1. (中国空间技术研究院 西安分院,陕西 西安 710100)
  • 出版日期:2016-03-15 发布日期:2016-03-18
  • 作者简介:张传林(1983—),男,工程师。研究方向:星载阵列信号处理等。孙垂强(1984—),男,工程师。研究方向:星载阵列信号处理等

Design and Implementation of Multichannel Amplitude and Phase Measurement Device

ZHANG Chuanlin,SUN Chuiqiang   

  1. (Xi'an Branch,Academy of China Space Technology (CAST),Xi'an710100,China)
  • Online:2016-03-15 Published:2016-03-18

摘要:

为测量校准信号源的幅度相位一致性,设计并实现了一种基于可编程门阵列的多通道幅相测量设备。该设备利用伪噪声(PN)码的伪随机性,采用相关解调的方法,在射频直接采样,减少了测量设备带来的幅度相位测量误差,并提高了测量精度。在多通道间的幅度相位差测试结果证明,幅度相位测量精度分别达到0.2 dB和2°。

关键词: PN码, 多通道, 幅度相位测量

Abstract:

A multichannel amplitude and phase measurement device based on field programmable gate array (FPGA) is proposed and implemented for the calibration signal source.The device takes advantage of the randomness of PN code and the method of correlating demodulation.Direct sampling at radio frequency is used to reduce measurement error and improve measurement precision.Test of amplitude difference in multi channels shows that the measurement precision of the amplitude and phase is 0.2 dB and 2° respectively.

Key words: PN code;multichannel;the measurement of the amplitude and phase

中图分类号: 

  • TN911.7