Frequency Management for Satellite Communications

Abstract

In view of the rather special aspect of interference associated with satellite communications, the problem of proper frequency management in this field assumes far greater importance. The question of efficient utilization of radio frequency bands allocated for ‘fixed satellite service’ is intricately linked with that of efficient utilization of ‘geostationary satellite orbit’.

The paper traces the existing ITU provisions towards ensuring an orderly use of the radio frequency spectrum for satellite communications and discusses the key elements involved in proper frequency management and efficient utilization of concerned frequency bands. Towards this, the paper proposes a minimal homogeneity constraint of arranging the carriers in uniform fashion, in all networks, according to their power spectral densities, in addition to advocating an increased interference allowance and tightening of other system characteristics enabling frequency reuse. The paper then discusses different frequency management related tasks in the planning and operations of a domestic satellite system with particular reference to INSAT-1.

Additional information

Notes on contributors

Ram Manohar

Ram Manohar: Is presently working as Director Satellite/NOCC in the P&T Department at New Delhi. After completing his BE (ECE) and ME (Advanced Electronics) with distinction, respectively in 1965 and 1967 from Indian Institute of Science, Bangalore he was a lecturer in the E & CE Department of University of Roorkee. Joined the P&T Department on the basis of Indian Telecom. Service's 1966 Exam. After specializing in Transmission branch, he installed coaxial cable system between Jodhpur and Bikaner. He joined the Telecom. Research Centre in 1971 where he worked in the field of Radio and Satellite Communication in various capacities. He has worked towards INSAT system design and inter-satellite system coordination for the INSAT Network. Presently, he is responsible for the domestic SATCOM Network Operation Control and the maintenance of P&T Satellite Earth Stations in the Northern Telecom, region.