А.V. Grebennikov – Ph.D. (Eng.), Associate Professor, Head of Sector; 

Head of Department «Radio-electronic Equipment of Information Systems»,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: berg24@mail.ru

А.S. Kondratiev – Leading Engineer; Senior Lecturer,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: andserg@mail.ru

К.А. Kulichkov – Design Engineer; Post-graduate Student,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: kirill.kulichkov.92@mail.ru

N.S. Kulichkova – Design Engineer; Post-graduate Student,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: natasha.kulichkova.93@mail.ru

А.А. Larkov – Head of Sector; Post-graduate Student,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: Antonlarkov@mail.ru

А.А. Popov – Design Engineer 1 cat.; Post-graduate Student,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk)

E-mail: andrey091292@bk.ru

S.V. Sizasov – Leading Engineer; Senior Lecturer,

JSC «SPE «Radiosvyaz»; Siberian Federal University (Krasnoyarsk) E-mail: sizasov@mail.ru

When building a high-precision system of time-frequency synchronization, an urgent problem is to reduce the error in determining the code pseudorange, including due to the multipath propagation of the navigation signal.

Present a way to reduce the multipath error and experimentally show its effectiveness.

The proposed method is based on the use of a multi-element antenna array in the time-frequency synchronization system, which  allows focusing the radiation pattern on a «direct» navigation signal. After the implementation of the method, an experiment was conducted in which the code pseudorange was measured by a single antenna and a multi-element antenna array. The experimental results show that the use of an antenna array with 5 antenna elements reduces the multipath error by approximately 2,5 times. The results of this work can be used to build a high-precision time-frequency synchronization system.

1. Kulichkov K.A., Kulichkova N.S., Chepa K.N., Grebennikov A.V. Jeksperimental'naja ocenka pogreshnosti sistemy sinhronizacii s  ispol'zovaniem kombinirovannogo signala chastotno-vremennoj sinhronizacii. Uspehi sovremennoj radiojelektroniki. 2018. № 12.  S. 62–66. DOI: 10.18127/j20700784-201812-13. [in Russian]
2. Kulichkov K.A., Kulichkova N.S., Grebennikov A.V. Issledovanie varianta realizacii metoda korrekcii ionosfernoj pogresh-nosti GNSS po fazovym izmerenijam v razlichnyh chastotnyh diapazonah. Uspehi sovremennoj radiojelektroniki. 2017. № 12. S. 53–57. [in Russian]