Title :
Time delay compensation of IIR notch filter for CW interference suppression in GNSS
Author :
Li Xianbin ; Wang Yueke ; Chen Jianyun
Author_Institution :
Coll. of Mechatron. Eng. & Autom., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
The global navigation satellite system (GNSS) receivers are high susceptible to continuous wave (CW) interference. The CW suppression capability of GNSS can be further enhanced by using the adaptive infinite impulse response (IIR) notch filter. However the IIR notch filter will take in time delay (TD) error when it calculates the pseudo-range in GNSS receiver. A method to compensate the TD error based on the analysis of the character of the IIR notch filters is described in this paper. The performance of the method is analyzed and simulated. And the results show that the method can efficiently eliminate the influence of the filter in pseudo-range calculation processing.
Keywords :
IIR filters; adaptive filters; delays; interference suppression; notch filters; satellite navigation; CW interference suppression; GNSS; IIR notch filter; adaptive infinite impulse response notch filter; continuous wave interference; global navigation satellite system; pseudorange calculation processing; time delay compensation; time delay error; Delay effects; Global Positioning System; IIR filters; Instruments; Interference; Receivers; Time of arrival estimation; CW interference; GNSS; IIR notch filter; time delay compensation;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-0757-1
DOI :
10.1109/ICEMI.2013.6743059
