TY - GEN
T1 - A Novel algorithm for adaptive notch filter to detect and mitigate the cwi for gnss receivers
AU - Lv, Qingshui
AU - Qin, Honglei
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - The continuous wave interference (CWI) and the pulsed CWI have been shown to have severe impacts on the quality of the received GNSS signal. This paper presents a novel algorithm for adaptive notch filter (ANF) based on direct form structure, which is constructed of the second-order infinite impulse response (IIR) notch filter with constrained poles and zeros in detection and mitigation of CWI for Global Navigation Satellite System (GNSS) receivers. The novel algorithm for ANF can estimate each CWI frequency and computer the power of each CWI in frequency domain, then give the appropriate value of the other parameter for ANF by looking up the Mapping Table which shows the one-to-one relationship between the power of CWI and the depth of ANF. Finally, it constructs the ANF when there is a CWI in time domain. The effective carrier-to-noise power ratio (C/N0) is introduced to reflect the effect of interference on characteristics at the input of the GNSS receivers. In order to assess the performance of the novel algorithm to detect and mitigate the CWI on GPS L1 signals, positioning accuracy which reflects the final capability of most GNSS receivers is proposed. A group of experiments has been carried out to prove the performance of the novel algorithm. From the results of experiments, the novel algorithm for ANF can detect the CWI in frequency domain, and mitigate the CWI in time domain.
AB - The continuous wave interference (CWI) and the pulsed CWI have been shown to have severe impacts on the quality of the received GNSS signal. This paper presents a novel algorithm for adaptive notch filter (ANF) based on direct form structure, which is constructed of the second-order infinite impulse response (IIR) notch filter with constrained poles and zeros in detection and mitigation of CWI for Global Navigation Satellite System (GNSS) receivers. The novel algorithm for ANF can estimate each CWI frequency and computer the power of each CWI in frequency domain, then give the appropriate value of the other parameter for ANF by looking up the Mapping Table which shows the one-to-one relationship between the power of CWI and the depth of ANF. Finally, it constructs the ANF when there is a CWI in time domain. The effective carrier-to-noise power ratio (C/N0) is introduced to reflect the effect of interference on characteristics at the input of the GNSS receivers. In order to assess the performance of the novel algorithm to detect and mitigate the CWI on GPS L1 signals, positioning accuracy which reflects the final capability of most GNSS receivers is proposed. A group of experiments has been carried out to prove the performance of the novel algorithm. From the results of experiments, the novel algorithm for ANF can detect the CWI in frequency domain, and mitigate the CWI in time domain.
KW - Adaptive notch filter(ANF)
KW - Continuous wave interference(CWI)
KW - Effective carrier-to-noise power ratio
KW - Global Navigation Satellite System(GNSS)
KW - Positioning accuracy
UR - https://www.scopus.com/pages/publications/85061823230
U2 - 10.1109/SIPROCESS.2018.8600453
DO - 10.1109/SIPROCESS.2018.8600453
M3 - 会议稿件
AN - SCOPUS:85061823230
T3 - 2018 IEEE 3rd International Conference on Signal and Image Processing, ICSIP 2018
SP - 444
EP - 451
BT - 2018 IEEE 3rd International Conference on Signal and Image Processing, ICSIP 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE 3rd International Conference on Signal and Image Processing, ICSIP 2018
Y2 - 13 July 2018 through 15 July 2018
ER -