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首页> 外文会议>Gravity, Geoid and Space Missions: GGSM 2004; International Association of Geodesy Symposia; vol.129 >Evaluation of Airborne Gravimetry Integrating GNSS and Strapdown INS Observations
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Evaluation of Airborne Gravimetry Integrating GNSS and Strapdown INS Observations

机译：结合GNSS和捷联惯导系统观测的航空重量分析的评估

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Airborne gravimetry systems provide the most economical way to improve the spatial resolution of gravity data measured by satellite missions. So the paper deals with the presentation of a modern airborne gravitymeter designed, developed and tested at the university FAF Munich. The specific forces are measured by a high precision strapdown INS and the kinematical accelerations are derived using numerous differential GNSS observations. So the first part of the paper describes the system architecture, the test environment and the area of two finished flight test campaigns. The error models of GNSS and INS measurements are demonstrated and evaluated in regard to airborne gravimetry applications. In this context the derivation of kinematical accelerations out of GNSS raw data is investigated. Thereby the additional performance potential of five GNSS receivers in the aircraft and twelve reference stations along the flight trajectory for acceleration determination is taken into account. In the scope of integration filter design important aspects are emphasized concerning the low dynamic input data and the analogue processing of GNSS and INS data streams. Finally a first result of the observed gravity signal is presented.
机译：机载重量分析系统提供了最经济的方法来提高卫星任务测得的重力数据的空间分辨率。因此，本文涉及在FAF慕尼黑大学设计，开发和测试的现代机载重力仪的介绍。比力是通过高精度捷联惯导INS测量的，运动加速度是使用大量差分GNSS观测值得出的。因此，本文的第一部分描述了系统架构，测试环境以及两个已完成的飞行测试活动的区域。 GNSS和INS测量的误差模型针对机载重量分析应用进行了演示和评估。在这种情况下，研究了从GNSS原始数据推导出运动学加速度。因此，考虑了飞行器中的五个GNSS接收器和沿着飞行轨迹的十二个参考站用于确定加速度的附加性能潜力。在集成滤波器设计的范围内，着重强调了有关低动态输入数据以及GNSS和INS数据流的模拟处理的重要方面。最后，给出了观测到的重力信号的第一个结果。

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