kHz激光器在武汉卫星观测站的测距实验

高重复频率激光器是kHz卫星激光测距系统的重要组成部分,提高激光发射频率可以有效地获得更多的观测数据,这是当今卫星激光测距领域的发展方向.针对武汉卫星观测站进行的kHz激光测距实验,介绍了kHz激光器的工作过程和原理,分析了影响高重复频率回波探测的因素.实验结果表明:对实验过程中所观测到的中低轨卫星,观测数据量提高了1...     

南极乔治王岛重力潮汐研究

本文应用LCR-G型重力仪在南极乔治王岛获得342天有效的重力固体潮观测资料,分析结果表明主波潮汐因子δ及相位滞后△φ的中误差小于6‰及0.3°。采用Schwiderski等潮图作海潮改正,发现M_2波受海潮影响固体潮观测幅度的20％且相位提高6.7°,获得该地区重力潮汐因子为 δ_(O_1) =1.2178±0.0061,△φ_(O_1)=2.13±0.25°, δ_(M_2)=1.2350±0.0045,△φ_(M_2)=-0.53±0.16°。     

Studies on Gravity Tides in King George Island, Antarctica

By utilizing LCR-G gravimeter, 342-day available gravity tide observations were obtained in King George Island, Antarctica. Analytical results show that mean errors of tidal factor δ and phase delay △φ for main waves are less than 0.6% and 0.3° respectively. By using the Schwiderski cotidal map to make oceanic tide correction, we discover that the effect on M_2 wave by oceanic tide reaches 20% of body tide magnitude, and leading phase is 6.7°. The obtained gravity tidal factors of this region areδ_(O_1)=1.2178±0.0061, △φ_(O_1)=2.13±0.25°,δ_(M_2)=1.2350±0.0045, △φ_(M_2)=-0.53±0.16°.