水准面

Then, combined with spherical-harmonic spread formula and Tscherning/Rapp experiential covariance function, a new covariance function estimation method is created, whose configuration capability is tested and analyzed.

第七章概括了本文研究的主要内容，结合似大地水准面精化的要求和本文研究内容，介绍了本文力求解决的关键问题，并简要阐述了似大地水准面精化的未来发展趋势。

Many different models are discussed here for the combination of gravimetric geoid with GPS-Levelling data.

文中讨论了许多不同的重力大地水准面和 GPS 大地水准面数据联合处理的模型。

The new geoid can provide an alternative and cost-effective method to third order levelling specifications and for many scientific applications.

新的大地水准面能提供一种可选且有成本效益的第三类大地水准面规范，它可用于许多的科学研究。

They are also compared to GPS/Levelling differences.

结果表明大地水准面和似大地水准面之间的差异是应该严格区别的。

Making sufficient researchs on mult-data combined problem for cm-order precision geoid, it presents and validates schemes of geoid determination, including precision estimation, outwork optimized designment, model algorithm and evaluation of result quality.

较为系统地研究了影响厘米级大地水准面精度指标的多种大地测量数据融合问题，提出并初步验证了以精度估算、外业工程优化设计、模型算法与成果质量评估为一体的高精度大地水准面精化方案。

The results show that,after considering the Geodi-spheroid separation(the reference ellipsoid and the EGM96 Geoid are used as vertical datum for GPS and SRTM respectively),the height differences between SRTM and GPS are very small.

结果显示，经过大地水准面差距补偿后(GPS和SRTM分别采用参考椭球面和EGM96大地水准面作为高程基准)，SRTM和GPS高程的差异非常小，基本上在0附近波动。

In this paper the Datum-shift parameters are determined using the map of geoidal undulation based on Rapp's 180×180 solution and the computed values of geoidal un- dulation with respect to WGS-72 system as well as the map of geoidal undulation with respect to local geodetic coordinate system-1980 of our country.

本文利用 Rapp 180×180阶解和 WGS-72系统的绝对大地水准面差距分别同我国80大地坐标系的相对大地水准面差距相配合推算了平移转换参数。

In this paper the Datum-shift parameters are determined using the map of geoidal undulation based on Rapp's 180×180 solution and the computed values of geoidal un- dulation with respect to WGS-72 system as well as the map of geoidal undulation with respect to local geodetic coordinate system-1980 of our country.

武汉测绘学院学报，，编辑部邮箱 1981年 02期卫星多普勒；地心坐标系；转换参数；大地坐标系；大地水准面差距；本文利用 Rapp 180×180阶解和 WGS-72系统的绝对大地水准面差距分别同我国80大地坐标系的相对大地水准面差距相配合推算了平移转换参数。

Based on the summary of newest progresses of global gravity field models, isostatic models and flexural theory of Hthosphere and making used of global gravity model (UTCSR GRACE/GFZ EIGEN-GRACE), First, I calculate geoidal anomalies with different degrees and orders, isostatic residual geoidal anomalies of Hthosphere and horizontal stress distribution in Chinese mainland and vicinity and make an interpretation with multi-levels isostatic equilibrium. Secondly, combination with surface geology and others geophysical data, I analyze detailed structure of lithosphere within various segments of the central orogenic system, respectively. Then, On the basis of making a comparative analysis with among East-Asian tomography, anomalies of geoid and satellite magnetic field for lithosphere and gravity and aeromagnetic, I propose a the lithospheric structural framework model for the Chinese mainland and adjacent area, specially the COS.

利用国际最新的地球重力场模型(UTCSR GRACE/GFZ EIGEN-GRACE)和GTOPO 30数字高程模型，笔者首先计算了中国大陆不同球谐阶次大地水准面异常、岩石圈均衡剩余大地水准面异常和水平应力场分布，从岩石圈内多层次均衡角度进行了解释推断；其次，结合地表地质和其它综合地球物理资料，分区段对中央造山系及邻区分析与解释了岩石圈细结构；然后，通过东亚地区地震层析、大地水准面异常和卫星岩石圈磁场、全国重力与航空磁力对比分析，建立了中国大陆及其邻区岩石圈，特别是中央造山系的初步结构框架。

This paper puts forward, in the point, gravimetric geoid method, geometric geoid method and synthesis method to transform ellipsoid height into orthometric height.

基于此，扼要提出应用重力大地水准面法、几何大地水准面法和综合法将GPS椭球高改化为正高的方法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。