电子经纬仪测量系统在偏置型抛物面天线检测中的应用

将电子经纬仪工业测量系统模拟摄影测量系统,把经纬仪水平角、垂直角观测值化算为虚拟像点坐标观测值,按摄影测量光束法平差进行二台或多台经纬仪间的系统定代间坐标解算,从而实现了经纬仪在任意姿态下的空间坐标测量功能。在光束法平差的基础上开发了中文版ＴＳＳＴ２．００工业测量系统软件。最后介绍了偏置型抛物面天线的数学模型和ＴＳＳＴ工业测量系统在其检测中的应用。     

哈依煤气工程管线GPS测量及数据处理

介绍哈依煤气工程管线ＧＰＳ控制网的布设、施测及观测数据处理,总结了长距离导线型ＧＰＳ控制网布设的可能性与经验。     

用附有条件的参数平差法求解秩亏网新探

通过引进典则参数,以较简捷的方式证明了秩亏网平差应满足的条件方程,从而用附有条件的平差方法求解秩亏网平差参数的最小二乘极小范数解。     

自由网平差方法及统计特性新探

本文结合参数平差和主成分估计理论,导出了误差方程中含多重共线性时未知参数的求解公式,并以定理的形式,证明了主成分估计的解是极小范数解。由此,将主成分估计推广到秩亏网平差中,同时导出了未知参数估值之协因数阵的计算公式,同时,证明了自由网平差的传统特性。     

Mapping on the HEALPix grid

The natural spherical projection associated with the Hierarchical Equal-Area and Isolatitude Pixelization (HEALPix) is described and shown to be one of a hybrid class that combines the cylindrical equal-area and Collignon projections, not previously documented in the cartographic literature. Projection equations are derived for the class in general and are used to investigate its properties. It is shown that the HEALPix projection suggests a simple method of (i) storing and (ii) visualizing data sampled on the grid of the HEALPix pixelization, and also suggests an extension of the pixelization that is better suited for these purposes. Potentially useful properties of other members of the class are described, and new triangular and hexagonal pixelizations are constructed from them. Finally, the standard formalism is defined for representing the celestial coordinate system for any member of the class in the FITS data format.     

平差系统模型误差补偿的配置法

利用大地测量数据分析地壳形变所建立的平差系统，不可避免地存在模型误差。给出了估计模型偏差的带权均方误差公式，提出了模型误差的识别、先验协方差的确定以及用最小二乘配置法对平差系统模型误差的补偿方法。     

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Finding the most variable stars in the Orion Belt with the All Sky Automated Survey

We look for high‐amplitude variable young stars in the open clusters and associations of the Orion Belt. We use public data from the ASAS‐3 Photometric V ‐band Catalogue of the All Sky Automated Survey, infrared photometry from the 2MASS and IRAS catalogues, proper motions, and the Aladin sky atlas to obtain a list of the most variable stars in a survey area of side 5° centred on the bright star Alnilam (ε Ori) in the centre of the Orion Belt. We identify 32 highly variable stars, of which 16 had not been reported to vary before. They are mostly variable young stars and candidates (16) and background giants (8), but there are also field cataclysmic variables, contact binaries, and eclipsing binary candidates. Of the young stars, which typically are active Herbig Ae/Be and T Tauri stars with Hα emission and infrared flux excess, we discover four new variables and confirm the variability status of another two. Some of them belong to the well known σ Orionis cluster. Besides, six of the eight giants are new variables, and three are new periodic variables (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

磐石市矿业权实地核查测量技术总结

本文通过对磐石市矿业权实地核查测量工作的总结,对矿业权实地核查中测量技术的方法进行了全面介绍和系统阐述,为矿业权核查的顺利进行提供了良好的理论支持,同时也为今后类似测绘项目提供了宝贵的实践经验。     

涡阳花沟区28-5煤田孔粘钻事故的处理实践

介绍了涡阳花沟区28-5煤田孔粘钻事故的原因和处理方法,加强对泥浆比重、滤失性和流变性能的调整,对预防孔内发生粘钻事故有积极作用。