А.S. Tolstikov - Dr.Sc. (Eng.), Head of the Time and Frequency Service SNIIM, Siberian Research Institute of Metrology (Novosibirsk). E-mail: tolstikov@mail.ksn.ru V.М. Vladimirov - Dr.Sc. (Eng.), Director, LLC «SPC «Elektron» (Krasnoyarsk). E-mail: vlad@ksc.krasn.ru Е.D. Borisova - Technician, LLC «SPC «Elektron» (Krasnoyarsk). E-mail: ekaterina_koty_borisova@mail.ru

One of the areas of modernization of GLONASS is due to the creation of a network of the non-query measuring stations performing trajectory measurements of navigation satellites for the GLONASS ephemeris support. For non-query measuring stations, there are high demands on the stability characteristics of the standards of frequency and time, which form the reference signal for the recep- tion of navigational equipment GNSS. Uncontrolled frequency drift of these standards in a stand-alone operation non-query measur- ing stations violates the terms of timing of the receiving equipment generates a loss of phase measurement cycles and, ultimately, reduce the reliability of the results of trajectory measurements [1]. To overcome these difficulties enables the use of a part of non- query measuring stations is not a single standard of frequency and time, and the group keepers of frequency.

 

1. Povaljaev A.A. Sputnikovye radionavigacionnye sistemy: vremja, pokaza- nija chasov, formirovanie izmerenijj i opredelenie otnositelnykh koor- dinat. M.: Radiotekhnika.2008.
2. Podogova S.D., Mishagin K.G. i dr. Formirovanie vykhodnogo signala gruppovogo ehtalona chastoty i vremeni s ispolzovaniem chastotnojj avto- podstrojjki na neskolkikh vremennykh masshtabakh // Trudy instituta pri- kladnojj astronomii RAN. 2013. № 27. SPb. S.273-279.