for an efficient use of the spectrum/orbit resource. Pursuant to Annex 7 "Use of the Spectrum/Orbit Resource," the Conference prescribed that the following techniques should be applied "to the maximum extent technically and economically practicable consistent with the capability of systems to fulfill the requirements for which they were designed": 1. Clustering 2. Cross-polarization 3. Crossed-beam geometry 4. Paired service areas 5. Frequency interleaving 6. Minimum space station spacings 7. Space station antenna discrimination 8. Earth station antenna discrimination 9. Minimizing e.i.r.p. differences 10. Realistic quality and reliability objectives. With a suitable use of the foregoing elements in the management of the radio frequency spectrum it can be concluded that radio frequencies emanating from space objects located in geostationary orbit need not be Final Acts, WARC BS, Annex 7, pp. 1-2. Equivalent Isotropically Radiated Power (e.i.r.p.) is defined as "the product of the power of an emission as supplied to an antenna and the antenna gain in a given direction relative to an isotropic antenna." Final Acts, WARC ST, 23 UST 1527, 1579, TIAS 7435. The 1977 WARC BS Conference agreed to Annex 8 entitled "Technical Data Used in Establishing the Provisions and Associated Plan and Which Should be Used for Their Application." The Conference under the heading of basic technical characteristics, in paragraph 3.10 referred to the "Plan" for orbital spacing for Regions 1 and 3. This was "based generally on nominal orbital positions spaced uniformly at intervals of 6°." Reference was also made to satellite station-keeping, as follows: "Space stations in the broadcasting-satellite service must be maintained in position with an accuracy of better than ± 0.1° in both the N-S and E-W direction. (These tolerances lead to a maximum excursion of ± 0.14° from the nominal satellite position.)." Final Acts, WARC BS, Annex 8.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==