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首页> 外文会议>Gravity, Geoid and Space Missions: GGSM 2004; International Association of Geodesy Symposia; vol.129 >TERRA: A feasibility study on local geoid determination in Bolivia with strapdown inertial airborne gravimetry
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TERRA: A feasibility study on local geoid determination in Bolivia with strapdown inertial airborne gravimetry

机译：TERRA：捷联惯性航空重力测定玻利维亚当地大地水准面的可行性研究

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摘要

Strapdown inertial airborne gravimetry as a practical and feasible tool for local and regional geoid determination is under research at the Institute of Geomatics (IG). Within the framework of the Spanish-Bolivian cooperation project TERRA, between the Institute Geografico Militar of Bolivia (IGM) and the IG, a feasibility analysis on geoid determination in Bolivia by means of INS/GNSS integration is being carried out. TERRA includes, among other goals, the specification of the geoid model that best fits the needs of Bolivia from a global point of view. Simulations in the spatial and spectral domain for GNSS and INS data will allow for an assessment of the performance of the technology. In addition, an empirical covari-ance model of the gravity anomalies has been derived from CHAMP-data, so that realistic simulations will be carried out. The contribution of other new satellite gravity missions, such as -GOCE-, will be evaluated as well. Actual gravity data will be obtained from a test flight over various topographic conditions to analyze the system response to a highly variable gravity signal. The data will be also processed to empirically verify the simulation results. The aim of this paper is to introduce the project and present some preliminary results.
机译：动力学研究所（IG）正在研究将捷联惯性空中重力法作为一种实用可行的工具来确定局部和区域大地水准面。在西班牙-玻利维亚合作项目TERRA的框架内，玻利维亚军事地理研究所（IGM）和IG之间进行了通过INS / GNSS整合确定玻利维亚大地水准面的可行性分析。 TERRA除其他目标外，还包括大地水准面模型的规范，从全球的角度来看，它最适合玻利维亚的需求。在GNSS和INS数据的空间和光谱域中进行仿真将可以评估该技术的性能。此外，已经从CHAMP数据导出了重力异常的经验协方差模型，因此将进行现实的模拟。其他新的卫星重力任务（例如-GOCE-）的贡献也将得到评估。实际重力数据将从各种地形条件下的试飞中获得，以分析系统对高度可变的重力信号的响应。还将处理数据以凭经验验证仿真结果。本文的目的是介绍该项目并提供一些初步结果。

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