Principle and application of GNSS pseudolite positioning system 并列题名：Principle and application of GNSS pseudolite positioning system Principle and application of GPS reference stations system Principle and application of IoT operating System Principle and application of accounting information system Principles and applications of agricultural information system Principles and applications of geographic information system Principle and application of satellite navigation terminal test system Principle and application of satellite navigation augmentation system Principle and application of ARM Cortex-M3 embedded system