caa a22 4500 477089038 CHVBK 20180405111511.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF02365827 doi (NATIONALLICENCE)springer-10.1007/BF02365827 Shapira Joseph Radio Systems Expertise, 23 Sweden St., 34980, Haifa, Israel aut Interference from mobile satellite systems through terrain scattering [Elektronische Daten] [Joseph Shapira] The emerging generation of personal communications satellites, built to communicate with handheld telephone units, will generate power flux on earth that is orders of magnitude higher than that of the present satellite service, and its potential interference with terrestrial-based systems is of concern. It is proposed here that the flux scattered from the ground surface into the antenna main beam and near sidelobes may cause higher interference than direct coupling into the antenna. This mechanism, previously observed in terrestrial systems, may not be mitigated by adaptive nulling techniques, and is less angle-dependent. A simple model is developed, to be used as a computational tool for assessing the interference and its functional dependence on governing parameters. In the absence of proper terrain scattering models, examples are evaluated by borrowing results from interference observed in terrestrial microwave links, which indicate the possible severity of the effect. Plenum Publishing Corporation, 1996 Mobile satellite system nationallicence interference nationallicence terrain scattering nationallicence frequency coordination nationallicence International Journal of Wireless Information Networks Kluwer Academic Publishers-Plenum Publishers 3/3(1996-07-01), 173-179 1068-9605 3:3<173 1996 3 10776 https://doi.org/10.1007/BF02365827 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02365827 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Shapira Joseph Radio Systems Expertise, 23 Sweden St., 34980, Haifa, Israel aut NATIONALLICENCE 773 0- International Journal of Wireless Information Networks Kluwer Academic Publishers-Plenum Publishers 3/3(1996-07-01), 173-179 1068-9605 3:3<173 1996 3 10776 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer