问个地球同步轨道的问题

• "first come, first served"
• a satellite position is acquired through negotiations with the administrations concerned by actual usage of the same portion of the orbital segment.
• Member administrations designate the volume of orbit/spectrum resources that is required to satisfy their actual requirements. It then falls to the national administrations to assign frequencies and orbital positions,
  

Orbit allocation

Satellites in geostationary orbit must all occupy a single ring above the equator. The requirement to space these satellites apart to avoid harmful radio-frequency interference during operations means that there are a limited number of orbital "slots" available, thus only a limited number of satellites can be operated in geostationary orbit. This has led to conflict between different countries wishing access to the same orbital slots (countries at the same longitude but differing latitudes) and radio frequencies. These disputes are addressed through the International Telecommunication Union's allocation mechanism.[6] Countries located at the Earth's equator have also asserted their legal claim to control the use of space above their territory.[7] Since the Clarke Orbit is about 265,000 km (165,000 mi) long, countries and territories in less-populated parts of the world have been allocated slots and reserved portions of the radio-frequency spectrum already, even though they aren't yet using them. The problem presently lies over densely-populated areas such as the Americas and Europe/Africa, and above the middles of the three equatorial oceans.

In the process of establishing the ITU's space-related regulations, emphasis was laid from the outset on efficient, rational and cost-effective utilization. This concept was implemented through a "first come, first served" procedure. This procedure ("coordination before use") is based on the principle that the right to use a satellite position is acquired through negotiations with the administrations concerned by actual usage of the same portion of the orbital segment. If applied correctly (i.e. to cover genuine requirements), the procedure offers a means of achieving efficient spectrum/orbit management; it serves to fill the gaps in the orbit as needs arise and results, in principle, in a homogeneous orbital distribution of space stations. On the basis of the RR, and in the frequency bands where this concept is applied, Member administrations designate the volume of orbit/spectrum resources that is required to satisfy their actual requirements. It then falls to the national administrations to assign frequencies and orbital positions, to apply the appropriate procedures (international coordination and recording) for the space segment and earth stations of their (governmental, public and private) networks, and to assume continuing responsibility for the networks.

• "first come, first served"
• a satellite position is acquired through negotiations with the administrations concerned by actual usage of the same portion of the orbital segment.
• Member administrations designate the volume of orbit/spectrum resources that is required to satisfy their actual requirements. It then falls to the national administrations to assign frequencies and orbital positions,