A.I. Perov - Dr. Sc. (Eng.), Professor, Head of Radio System Department, «National Research University «MPEI» (Moscow). E-mail: alexp@aha.ru E.V. Zakharova - Post-graduate Student, Radio System Department, «National Research University «MPEI» (Moscow)

A comparative analysis of three algorithms for tracking of pilot component of the signal L1OC GLONASS: two algorithms that use processing at common intermediate frequency and two type of delay discriminators - two and four gates and an optimal tracking al-gorithm that uses processing at subcarrier frequencies. It is shown when using the algorithm with processing at subcarrier frequencies root-mean-square error of phase tracking is ~1,3 times grater and root-mean-square error of delay tracking is ~2 times grater then when using the algorithm with processing at the common intermediate frequency. It is shown also that using four gates delay discriminator in the algorithm with processing at the common intermediate frequency permits to lower root-mean-square error of delay tracking in 1,2 times as compared with case of using tow gates delay discriminator.

 

1. Perov A.I. Osnovy postroenija sputnikovykh radionavigacionnykh sistem. M.: Radiotekhnika. 2012.
2. GLONASS. Principy postroenija i funkcionirovanija. Izd. 4‑e / Pod red. A.I. Perova, V.N. KHarisova. M.: Radiotekhnika. 2010.
3. Wendel J., Schubert F.M, Hager S. A robust technique for unambiguous BOC tracking // Navigation journal of Institute of Navigation. 2014. V. 61. № 3.
4. Perov A.I. Sintez i analiz algoritma slezhenija za fazojj pilotnojj komponenty signala L1OC GLONASS s obrabotkojj na podnesushhikh chastota // Vestnik MEHI. 2015. № 1.
5. Perov A.I. Sintez i analiz kogerentnogo algoritma slezhenija za zaderzhkojj pilotnojj komponenty signala L1OC GLONASS s obrabotkojj na podnesushhikh chastotakh // Radiotekhnika. 2013. № 10.
6. Castro D., Diez J., Fernández A., Sleewaegen J-M. A New Unambiguous Low-Complexity BOC Tracking Technique // ION GNSS 19th International Technical Meeting of the Sattelite Division. 26−29 September 2006. FortWorth. TX.