摘要
介绍了日本、印度正在研发的区域卫星导航系统MSAS／QZSS和GAGAN／IRNSS的现状及未来发展计划，并对两国的区域卫星导航系统进行了比较与分析。
The new development phases and the future programs of Japan and Indian SBAS programs, such as the MTSAT Satellite-Based Augmentation System （MSAS）, the Quasi-Zenith Satellite System （QZSS）, the GPS Aided GEO Augmented Navigation （GAGAN） system, the Indian Regional Navigation Satellite System （IRNSS）, are introduced respectively in detail. Then, the comparisons and analysis of them are given.
关键词
星基增强系统
区域卫星导航系统
性能比较
SBAS
Regional Navigation Satellite System
Comparisons of Capabilities
