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- 2016
基于PPP-AR模糊度快速重收敛技术提供可靠的URTK服务
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Abstract:
研究了观测数据短时失锁或中断情况下的精密单点定位-模糊度解算（precise point positioning-ambiguity resolution，PPP-AR）模糊度快速重收敛方法，给出了合理的观测值精化信息外推时间阈值，从系统端和用户端分别论证了该方法对提升现有非差网络RTK（undifferenced network real time kinematic positioning，URTK）服务可靠性的重要意义，并设计了相应的实时测试方案进行验证分析。测试结果表明，观测值精化信息可有效外推至少30 s，采用PPP-AR模糊度快速重收敛技术后，即使在周跳频繁发生的恶劣观测条件下也能使URTK系统端和用户端保持较高的服务可靠性。用户无需区域增强系统支持即可独立实现模糊度快速重收敛，有效降低了用户从URTK系统端获取区域增强信息时的实时数据通讯负担
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