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Abstract：
We compare the performance of dual-band (GPS L1/L2 and Galileo E1/E5a) real-time kinematic (RTK) positioning in an open sky and urban scenarios in southern Finland using two different authentication schemes: one using only satellites authenticated by Galileo\'s open service navigation message authentication (OSNMA) service (which at the moment of our tests led to using only authenticated Galileo satellites) and the other with no authentication. The results show the actual trade-off between accuracy and availability vs. authenticity associated with using only OSNMA-authenticated satellites, while the authentication of only Galileo satellites is possible (e.g., a drop of RTK positioning availability from 96.67 to 86.01% in our open sky and from 73.55 to 18.65% in our urban scenarios, respectively), and an upper bound of the potential performance that could be reached in similar experimental conditions had the authentication of GPS satellites been supported (e.g., an overall 14 cm and 10.20 m 95% horizontal accuracy in our open sky and urban scenarios, with below 30, 20 and 10 cm during 97.39, 96.03 and 92.43% of the time in the open sky and 49.12, 45.96 and 39.63% in the urban scenarios, respectively).
摘要：
我们使用两种不同的身份验证方案，比较了芬兰南部开放天空和城市场景中双频带（GPSL1/L2和GalileoE1/E5a）实时运动学（RTK）定位的性能：一种仅使用经过Galileo认证的卫星开放服务导航消息认证（OSNMA）服务（在我们的测试时，仅使用经过认证的Galileo卫星），而另一种则无需认证。结果显示了准确性和可用性与可用性之间的实际权衡与仅使用OSNMA认证卫星相关的真实性，而只有伽利略卫星的认证是可能的(例如，在我们开放的天空中，RTK定位可用性从96.67下降到86.01%，在我们的城市场景中从73.55下降到18.65%，分别)，以及在支持GPS卫星认证的情况下，在类似实验条件下可以达到的潜在性能的上限(例如，在我们开放的天空和城市场景中，整体14厘米和10.20米95%的水平精度，在空旷的情况下，在97.39、96.03和92.43％的时间内低于30、20和10厘米，在城市场景中分别为49.12、45.96和39.63％，分别)。
