许多国家的邮政、电报和电话管理机构(PTTs)的私有化及其电讯政策和规章的自由化已对电讯事业产生了直接影响,特别是对卫星行业。 私有化和自由化的理由很多,但主要有三条。第一,技术革新降低了基础结构的费用,卫星的功率越来越大,使得能用较小、较便宜的地面站进行工作。第二,服务部门增加,其中包括金融协会,旅行社和旅馆业。它们都要求经济有效的通讯手段,这是一个大型的 The privatization of postal, telegraph and telephone regulatory agencies (PTTs) and the liberalization of their telecommunications policies and regulations in many countries have had a direct impact on the telecommunications industry, especially in the satellite industry. There are many reasons for privatization and liberalization, but there are three main ones. First, technological innovations reduce the cost of infrastructure, and the power of satellites is growing, allowing smaller, cheaper ground stations to work. Second, the service sector has increased, including financial associations, travel agencies and hotels. They all require cost-effective means of communication, which is a large one