Performance Comparison of Code Discriminators in the Presence of CW Interference

This paper considers the effect of continuous wave interference (CWI) on code tracking loops for global navigation satellite system signal. Based on the integrate-dump model analysis, the overall correlation results in the presence of CWI are theoretically analyzed incorporating the sum frequency interference terms which were regarded as negligible quantities in previous studies. Using the obtained correlation results, the closed-form expressions of the code tracking errors caused by CWI for three types of code discriminators (coherent, noncoherent, and barycenter) are derived and formulated as the solutions of quadratic equations using reasonable assumptions of trigonometric functions. Simulations are performed to demonstrate the accuracy of the theoretical correlation results. Also, the simulated code tracking errors are also presented to corroborate the effectiveness of the closed-form code tracking errors in terms of interference parameters (frequency and phase). It is indicated that the barycenter discriminator has the superior performance and could be preferred for mitigating CWI in tracking stage. These results can be applied for performance comparison, signal design, receiver design, and interference mitigation techniques in the presence of CWI.

[1]  William C. Lindsey,et al.  Effects of CW interference on phase-locked loop performance , 2000, IEEE Trans. Commun..

[2]  Moeness G. Amin,et al.  Performance Analysis of GPS Receivers in Non-Gaussian Noise Incorporating Precorrelation Filter and Sampling Rate , 2008, IEEE Transactions on Signal Processing.

[3]  John W. Betz.  Effect of Partial-Band Interference on Receiver Estimation of C/N0: Theory , 2001 .

[4]  Beatrice Motella,et al.  A preventative approach to mitigating CW interference in GPS receivers , 2008 .

[5]  A. T. Balaei,et al.  Characterization of the Effects of CW and Pulse CW Interference on the GPS Signal Quality , 2009, IEEE Transactions on Aerospace and Electronic Systems.

[6]  Surendran K. Shanmugam.  Narrowband Interference Suppression Performance of Multi-Correlation Differential Detection , 2007 .

[7]  Yuqi Liu,et al.  Code tracking performance analysis of GNSS signal in the presence of CW interference , 2011, Signal Process..

[8]  D. Borio.  GNSS Acquisition in the Presence of Continuous Wave Interference , 2010, IEEE Transactions on Aerospace and Electronic Systems.

[9]  A. N. Idris,et al.  Effect of radio frequency interference (RFI) on the Global Positioning System (GPS) signals , 2013, 2013 IEEE 9th International Colloquium on Signal Processing and its Applications.

[10]  Zhi Qu,et al.  Continuous Wave Interference Effects on Ranging Performance of Spread Spectrum Receivers , 2015, Wirel. Pers. Commun..

[11]  Dennis M. Akos,et al.  Automatic gain control (AGC) as an interference assessment tool , 2003 .

[12]  Alan R. Lindsey,et al.  Anti-jamming GPS receivers based on bilinear signal distributions , 2001, 2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277).

[13]  Bernd Eissfeller,et al.  CW Interference Effects on Tracking Performance of GNSS Receivers , 2012, IEEE Transactions on Aerospace and Electronic Systems.

[14]  Salvatore Troisi,et al.  Real-Time Receiver Clock Jump Detection for Code Absolute Positioning with Kalman Filter , 2014, Wirel. Pers. Commun..

[15]  Fabio Dovis,et al.  Method for Assessing the Interference Impact on GNSS Receivers , 2011, IEEE Transactions on Aerospace and Electronic Systems.

[16]  Wei Sun,et al.  A novel interference suppression scheme for global navigation satellite systems using antenna array , 2005, IEEE Journal on Selected Areas in Communications.

[17]  Asghar Tabatabaei Balaei,et al.  CHARACTERIZATION OF INTERFERENCE EFFECTS ON GPS SIGNAL CARRIER PHASE ERROR , 2005 .

[18]  John W. Betz.  Effect of Narrowband Interference on GPS Code Tracking Accuracy , 2000 .

[19]  P. T. Capozza,et al.  A single-chip narrow-band frequency-domain excisor for a Global Positioning System (GPS) receiver , 1999 .

[20]  Andrew G. Dempster,et al.  Delayed PIC for Postcorrelation Mitigation of Continuous Wave and Multiple Access Interference in GPS Receivers , 2011, IEEE Transactions on Aerospace and Electronic Systems.

[21]  H. Vincent Poor,et al.  Narrowband interference suppression in CDMA spread spectrum communications , 1994, IEEE Trans. Commun..

[22]  Chung-Liang Chang,et al.  Performance analysis of narrowband interference mitigation and near-far resistance scheme for GNSS receivers , 2010, Signal Process..

[23]  Yuqi Liu,et al.  Characterization of Code Tracking Error of Coherent DLL Under CW Interference , 2012, Wirel. Pers. Commun..

[24]  P. Chang,et al.  Narrow-band interference suppression in spread-spectrum CDMA communications using pipelined recurrent neural networks , 1999 .

[25]  Youxi Tang,et al.  Suppression of Time-varying Multi-tone Interference Based on Frequency Domain Interference Detection , 2014, Wirel. Pers. Commun..

[26]  M. Moazedi,et al.  Analysis of Single Frequency GPS Receiver Under Delay and Combining Spoofing Algorithm , 2015, Wirel. Pers. Commun..

[27]  A.G. Dempster,et al.  A Novel Approach in Detection and Characterization of CW Interference of GPS Signal Using Receiver Estimation of C/No , 2006, 2006 IEEE/ION Position, Location, And Navigation Symposium.

[28]  Duo Xu,et al.  A new barycenter code discriminator for multi-access interference , 2013, Science China Information Sciences.