从铱星市场受挫看卫星移动通信的前景

铱星系统濒临破产的主要原因，一是手机生产缓慢、供货渠道不畅，造成延误；二是手机体积庞大，结构复杂，价格昂贵；三是通话费用高，各地价格差别大，且受到地面系统的有力挑战．四是市场前景认识不清，判断失误；五是业务开通之初掉话严重。数据传输速率低，服务性能尚欠火候。铱星系统将同其他卫星系统形成既互相补充，又互相竞争的局面，前景仍是很光明的。

Analysis of Indium Setbacks and Forecasts of Satellite Mobile Communications

Indium company is on the verge of bankruptcy due to the following reasons: First, slow handset production and delivery; Second, large-size handsets with complex structure and high cost; Third, high tariff and threatened by the challenge from the terrestrial system; Fourth, misunderstanding and misjudgement of the market prospects; Fifth, severe call-drops, low data rate, and inadequate performance from the outset. In spite of that, with its innovativeness, high-tech nature and unrivaled coverage, Iridium will be able to overcome various difficulties and regain its momentum; complementing and competing with other satellite systems.