车辆导航系统中定位数据处理和地图匹配技术

分析了GPS误差来源，并提出了相应的处理办法；融合电子地图中的道路数据和GPS所提供的定位数据的地图匹配算法，可以有效地提高车辆导航的定位精度。在分析各种地图匹配算法基础上，提出了一种实用的地图匹配方法，并且在实践中得到了验证。     

A new gravity map, a new marine geoid around Japan and the detection of the Kuroshio current

About half a million marine gravity measurements over a 30^∘×30^∘ area centered on Japan have been processed and adjusted to produce a new free-air gravity map from a 5′×5′ grid. This map seems to have a better resolution than those previously published as measured by its correlation with bathymetry. The grid was used together with a high-degree and -order spherical harmonics geopotential model to compute a detailed geoid with two methods: Stokes integral and collocation. Comparisons with other available geoidal surfaces derived either from gravity or from satellite altimetry were made especially to test the ability of this new geoid at showing the sea surface topography as mapped by the Topex/Poseidon satellite. Over 2 months (6 cycles) the dynamic topography at ascending passes in the region (23^∘47^∘N and 123^∘147^∘E) was mapped to study the variability of the Kuroshio current. Received: 15 July 1994 / Accepted: 17 February 1997     

腾格里沙漠东南缘降尘粒度特征和沉积速率

从多年降尘实测资料入手，分析了粉尘粒度特征、沉积速率和时变过程。提出了气象要素相关估测模型．确定０．２５ｍｍ为本区粉尘沉积粒径上限。周围沙漠是粉尘沉积细砂部分的尘源，粉砂和粘土部分沉积来自一个较大的时空范围，二者几乎各占降尘量的１／２。研究区年平均粉尘沉积速率４３５８ｋｇ／ｈｍ２，每年５月的季风转期具有年内最大沉积速率。     

基于GIS的山区年均温分布模拟与制图

针对某些下垫面复杂而气象站(哨)有限的山区,用地理信息系统(GIS)和气温推算数学模型相结合,来获取全域的年均温分布栅格图和等值线矢量图。以龙游县为例,说明了该方法从数学模型、因素图输入、图层格式转换、图幅叠置分析等一系列技术步骤。     

Doubtful Events Reported in Current Italian Earthquake Catalogues: The Medieval Earthquakes of Subiaco (Central Italy)

Within the framework of a study of the seismicity of the Aniene Valley (Central Italy), we analysed the medieval earthquakes of Subiaco (1216, 1227, 1299), the largest events reported for the area. Our main goal was to investigate some doubtful events reported in earthquake catalogues and, as such, currently utilised for seismic hazard estimates. A careful screening of the oldest available sources and their filiation pattern up to the present pointed out the uncertainty on the date and nature of these phenomena. A multidisciplinary approach based on the joint analysis of archaeological, geomorphologic and historical evidence allowed us to propose new interpretations concerning these events and their significance for the assessment of seismic hazard in the Aniene Valley. The main conclusion is that the dates of the 1216 and 1227 events are fairly unsupported. In particular, the 1216 earthquake could be dated back to between AD 1159 and 1181.     

机载扫描激光地面测绘系统分析

本文根据机载扫描激光地面测绘系统的功能和要求，分析了它的工作原理，概括出该系统中扫描激光测距的特点，介绍了一种最新的机载扫描激光地面测绘系统，最后提出了几个需要继续研究的问题     

航测数字化成图系统中子系统的研究

本文介绍了航测数字化成图系统中成图子系统的研制情况及相关技术问题。     

国家基本比例尺数字化地形图生产过程中地貌常见问题探讨

本文以1：10000单色数字化地形图为例，简述了国家基本比例尺数字化地形图生产过程中常见的与地貌相关质量问题。对部分产生质量问题的原因作了初步分析。以SCS多用途数字地形地籍测绘与管理系统软件和CASS5．1软件为例，对数字化地形图存在问题的修改方法进行了探讨。     

预警地震在地震预测中的意义

对新疆1970-2002年地震资料以不同范围、不同震级进行全时空扫描。结果表明，新疆台网监测能力较好地区绝大多数6级以上地震前地震活动关联图较为清晰。提出了预警地震的概念，认为预警地震在短临预报方面有一定的作用。     

赣中(崇仁-东乡)重力场特征及其对温泉热源的控制

断裂构造能够引起重力场的异常分布，温泉热源的形成和空间展布主要受深大断裂、基底构造等地质因素控制。基于这一思路，根据该区重力资料，结合地质及其它地球物理资料对深部地质结构做了一些探讨。对重力资料进行了一些处理，挖掘深部地质信息，根据所得信息推断出了一些基底断裂，有一些是本次重力结果新发现的断裂。此外，还证实了前人已圈定的断裂构造，这些构造在控热、导热作用方面起着重要作用，深大断裂、基底构造它们交汇部位附近是寻找温泉热源的有利地区。