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中文摘要：
针对三频全球导航卫星系统（GNSS）可构成多组模糊度极易固定的超宽巷组合这一最显著的优点,提出了一种利用三频GNSS进行长距离实时精密导航的算法。采用约90 km的基线实验结果表明,对两个超宽巷求解的电离层延迟经过2 min平滑,精度可达到1.5 cm;对电离层改正后的宽巷组合经过1 min平滑,平面定位精度优于3 cm。这意味着采用三频GNSS在我国中等城市只需要一个参考站即可实现精密导航和基本测绘服务。
英文摘要：
The most valuable benefits from three frequency GNSS are that several extra-widelane（EWL） combinations can be constructed. A new method for long-range real-time precise navigation is proposed according to this. The position experiment with employment of about 90 km baseline demonstrates that 1.5 cm RMS accuracy can be achieved for ionosphere delays after 2 min smoothing and 3 cm for horizontal coordinates is achieved after 1 min smoothing, which means that the precise navigation can be set up with only one reference station by using three frequency GNSS in the medium scale cities in China.
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