导航用重力梯度基准图构建方法的比较研究  

Comparison of Gravity Gradient Reference Map Composition for Navigation

作　　者：钱东[1] 刘繁明[1] 李艳[1] 张迎发 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《测绘学报》2011年第6期736-744,共9页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(60834005)

摘　　要：系统研究一种基于自由空间异常或布格异常数据的构图方法,避免相关研究构建梯度图时较少考虑标准测量数据,构图结果物理意义不明确和缺乏实用性的缺点。以重力归算理论推导构图方法原理,然后用频域算法实现构图过程中两个关键计算过程,通过算例分析构图效果。所构基准图数值、轮廓等关键特征均与实测重力梯度吻合较好,证明该方法在重力梯度辅助导航基准图构建中的实用价值。In order to overcome some drawbacks, such as little consideration of existing gravity database and physical meaning of the modeled results in reference map composition researches, a mapping method which starts from Free-air anomaly and Bouguer anomaly data is proposed. Based on gravity reduction theory, principle of the method is derived first, and then key algorithms in the computation is introduced. Effectiveness of the approach is analyzed detail by detail through two application examples, the results demonstrate that most value and charac- teristics of the acquired reference map compare favorably with measured gravity gradient data when high resolution gravity anomaly appears, which embodies practical value of the method. In addition, correlative software work can be referenced for the study of GGANS.

关 键 词：重力 重力梯度 导航 基准图 匹配 

分 类 号：P223[天文地球—大地测量学与测量工程]