期刊
GPS SOLUTIONS
卷 18, 期 4, 页码 605-613出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10291-013-0358-0
关键词
GNSS interference detection; Adaptive lattice IIR notch filter; Adaptive cascading filter structure
资金
- National GNSS Research Center program of the Defense Acquisition Program Administration
- Agency for Defense Development
A low-complexity time-domain approach for global navigation satellite systems is proposed to detect and identify single-tone, multi-tone, swept continuous wave interference (CWI) and band-limited white Gaussian noise (BLWN). An adaptive notch filter and adaptive cascading filter structure are employed to identify the type of interference signals. The number of the cascading stages is selected by comparing the total power in receiver bandpass, and after, passing the adaptive notch filter. For this reason, the proposed filter structure is more efficient in identifying and mitigating interference signals than the conventional filter structure. In addition, the automatic gain control gain is used to detect the existence of continuous wave interference. The performance of the interference detection and identification method is evaluated for the cases of GPS signal in the presence of single-tone, multi-tone, swept CWI and BLWN.
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