利用卫星光谱分析技术进行断层逸出气体监测

在不少震例中,临震前地壳出现气体异常,震前地下岩石受力产生裂隙,隐藏在地层中的CO2、CH4等温室气体逸出地表或水面。利用卫星光谱分析技术对断层逸出气体组分含量和总量进行监测,筛选出能够反应地震孕育过程中地下逸出气体异常演化特征的参数,建立地震短期预测的动态演化方法。对于认识震前地表气体异常机理,了解流体震兆的演变规律与这些气体异常的动态关系,改善卫星遥感地震预测,是很必要的。     

“资源一号”卫星星内粒子探测器对扰动事件的观测

本文比较了在太阳平静和扰动时期“资源一号”卫星星内粒子探测器对卫星舱内高能粒子的观测结果，发现在平静时期观测结果很好地反映了辐射带高能粒子在该高度上的分布情况.在扰动时期，粒子探测器观测到高能粒子分布出现重大变化，本文进一步讨论了影响高能粒子在近地空间分布的可能因素.     

现代通信技术在海洋地质调查中的应用

在当今海洋地质调查作业中，声学通信技术、ADSL通信技术、卫星通信技术、局域网络通信技术等现代通信技术得到广泛应用，本文对应用到的几种主要现代通信技术原理及其应用实例进行了介绍。     

基于导航卫星的数字地图传输协议设计与性能分析

本文就利用导航卫星的电文通信功能，进行大数据量数字地图数据传输的通信协议进行了论述。提出了等待式ARQ和选择重发式ARQ相结合的ARQ协议，介绍了该协议的基本思想，详细分析了协议性能并给出了实现协议的算法流程。     

对地观测卫星地面站的站址选择和布局分析

现代小卫星技术是近些年来迅速发展起来的航天领域高新技术，利用该技术为地球观测服务是一件远景可观、意义深远的事情。在对地观测卫星的诸多关键技术之中，地面站的设计是一个很重要的方面。本文主要对对地观测卫星地面站的站址选择与布局进行了详细的讨论。     

导航卫星自主定轨中系统误差△Ω和△t的消除方法

为了消除利用星间距离或速度观测值进行自主定轨时可能存在的卫星星座整体旋转和卫星钟差整体漂移的误差，提出利用单点定位的方法来研究并消除上述两项误差。当导航卫星整体旋转△Ω角时，单点定位所求得的测站经度也会偏移△Ω角，据此就能用具有精确地面坐标的控制点来测定△Ω角。当各卫星钟中均舍有系统误差△t时，利用单点定位所求得的接收机钟差中也会出现同样的误差，通过与标准时间比对就能测定△t值。算倒结果表明，该方法是有效的，可行的。     

An averaging method to study the motion of lunar artificial satellites I: Disturbing Function

We describe a semi-analytical averaging method aimed at the computation of the motion of an artificial satellite of the Moon. In this paper, the first of the two part study, we expand the disturbing function with respect to the small parameters. In particular, a semi-analytic theory of the motion of the Moon around the Earth and the libration of the lunar equatorial plane using different reference frames are introduced. The second part of this article shows that the choice of the canonical Poincaré variables lead to equations in closed form without singularities in e = 0 or I = 0. We introduce new expressions that are sufficiently compact to be used for the study of any artificial satellite. This revised version was published online in July 2006 with corrections to the Cover Date.     

GPS卫星的激光测距和应用研究

简述了SLR和GPS跟踪技术的发展概况。详细介绍了近几年来对GPS－35、36卫星的激光测距进展和应用研究的情况。给出了残差分析的初步结果,并指出了目前GPS卫星的稀少的激光测距资料对卫星精密定轨和站坐标的解算是有价值的。同时,也简单地评述了GPS卫星的微波和激光跟踪技术各自的优势和弱点．建议联合利用GPS-35、36卫星的SLR和GPS观测资料来开展有关的应用研究。最后,对今后的应用研究工作提出了建议．     

Image Sources for Informal Settlement Management

Informal settlements are a common feature of developing countries. In South Africa the improvement of living conditions in these settlements and the upgrading to formal housing types are regarded as being of central importance to the nation's development. Effective settlement improvement and upgrading activities, which we here term "management", require adequate spatial data. To date, the acquisition of spatial models of informal settlements has been based on conventional mapping techniques, and mostly on photogrammetry. Data are compiled using analogue or analytical methods. These are manual and hence require both considerable expertise and expensive equipment. Moreover, these methods are uneconomical over the often relatively small, densely populated areas covered by informal settlements and are also too expensive to employ with a regularity required to support such tasks as change detection. Alternative imaging sources and mapping techniques are therefore needed.
In this article we examine the problem of spatial information acquisition for informal settlement management from three perspectives: spatial information requirements, the role which imagery can play in satisfying these spatial information requirements, and effective imaging options. We focus on the potential of high resolution satellite imaging, small format digital aerial imagery and digital multispectral video systems for rapid mapping. We also discuss the example of automated shack extraction from aerial imagery.     

广义球谐函数及其在梯度边值问题中的应用

本文首先指出球谐函数不是球面上唯一的正交函数系,接着证明了体谐函数的一阶、二阶水平导数（称之为广义球函数）也是球面上的正交函数系,最后利用球面上的正交函数系研究了物理大地测量中的一阶、二阶梯度边值问题。