S.N. Karutin - GLONASS General Designer E-mail: s.karutin@glonass-iac.ru D.V. Lerner - Deputy Head Department E-mail: dv.lerner@glonass-iac.ru V.N. Kharisov - Director of Department of navigation and communication systems, JSC «VNIIR-Progress» E-mail: vkharisov@abselectro.com