频域干扰抑制技术对测量接收机测量精度影响  

The effect on measurement accuracy by frequency-domain interference suppression technique on surveying receiver

作　　者：王振伟[1] 崔晓伟[1] 陆明泉[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《电子技术应用》2015年第7期96-99,共4页Application of Electronic Technique

摘　　要：选用门限检测方式的频域干扰抑制算法(FDIS),将其应用于测量型接收机中。通过仿真,分析了不同干扰类型被抑制后信号的相关性变化、环路测量精度变化。仿真结果显示,频域干扰抑制技术可以对干信比为50 d B的干扰信号进行抑制。剔除干扰谱线会造成信号能量损失,不同类型干扰信号对测量精度影响程度存在差别,窄带干扰影响最大。受到影响的测量值仍满足精度要求。A frequency-domain interference suppression （FDIS） technology with a threshold for interference detection is employed and applied to a surveying receiver in this thesis. By suppressing different interferences, the correlation of signal and measurement accuracy of tracking loops is analyzed via simulations. The simulation results and analysis show that the FDIS can suppress the interference with jam-to-signal ratio 50 dB. The signal energy is lost while the spectral line is excised. The effect on measurement accuracy by different interferences is various, and the effect by narrowband interference is the most significant. The effected measured value still meets the accuracy requirement.

关 键 词：频域干扰抑制 测量精度 窄带干扰 测量型接收机 

分 类 号：TN965.5[电子电信—信号与信息处理]