东方红一号卫星成功发射,推动了我国卫星事业的蓬勃发展。到目前为止,我国研制并发射了50多颗各类卫星,其中包括返回式遥感系列、实践系列卫星、通信系列卫星、导航卫星、气象系列卫星、海洋卫星和资源系列卫星等。我国卫星已经从卫星技术试验、应用业务试验,逐步向全面服务于? The successful launch of Dongfanghong I satellite has promoted the vigorous development of China’s satellite industry. So far, China has developed and launched over 50 satellites of various types, including the return type remote sensing series, the practice series satellites, the communications series satellites, the navigation satellites, the meteorological series satellites, the ocean satellites and the resources series satellites. China’s satellites have been from satellite technology experiments, application of business trials, and gradually to full service?