Synchronous carrier wave interference suppression based on accumulation and average in Loran-C

Author

Zhu, Yinbing ; Xu, Jiangning ; Qiu, Taiqi ; Cui, Guoheng

Author_Institution

Electr. & Inf. Eng. Inst., Naval Eng. Univ., Wuhan, China

fYear

2009

fDate

16-19 Aug. 2009

Firstpage

18295

Lastpage

19756

Abstract

To improve real-time performance of narrow band interference(NBI) suppression in Loran-C system, algorithm of accumulation and average is presented based on the analysis of the structure of Loran-C pulses. After that, effects of synchronous carrier wave interference(CWI) and the interference whose frequency is integral multiple of 0.5 kHz upper or lower than that of Loran-C signal are simulated and analyzed. The simulation results show that the presented algorithm can suppress the CWI mentioned above effectively. Moreover, the mean square error of the algorithm does not change with signal to interference ratio(SIR), and is always on the level of 10^-6. And then, the validity of the algorithm is proved by the experiment.

Keywords

mean square error methods; radionavigation; Loran-C system; mean square error; narrow band interference suppression; signal to interference ratio; synchronous carrier wave interference suppression; Adaptive filters; Electric variables measurement; Frequency; Instruments; Interference suppression; Narrowband; Pulse measurements; Real time systems; Timing; Transmitters; Loran C; accumulation and average; synchronous interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3863-1

Electronic_ISBN

978-1-4244-3864-8

Type

conf

DOI

10.1109/ICEMI.2009.5274521

Filename

5274521