基于剩余定理的数字干涉仪设计与实现

Design and implementation of digital interferometer based on remainder theorem

通过介绍一套外场应用条件下基于剩余定理的多基线数字干涉仪系统设计、仿真、实现和实验结论,说明剩余定理应用于干涉仪设计具有较为严密的逻辑性和准确性。将数字接收技术引入干涉仪系统合理可行,并且保证了较高性能,符合电子对抗发展趋势,使系统设计方法更具借鉴意义。该干涉仪采用超宽带数字技术实现,数字中频带宽达到400 MHz,已应用于某单站定位试验系统,效果良好。

The system design,simulation,implementation and experiment conclusion of a multiple baseline digital interfero-meter which is under the condition of outside application are introduced to illustrate that the remainder theorem has a relatively rigid logic and accuracy for the application in interferometer design. To introduce the digital receiving technology into interfero-meter system to ensure the high performance is rational and feasible,and is in line with the development trend of electronic countermeasures,which makes the system design method is more significance. The ultra wideband digital technology is adopted to implement the interferometer with digital IF bandwidth of 400 MHz. It has been applied to a single station positioning experi-ment system,and its application effect is good.