基于MAPSOURCE交换格式实现GPS航点批量输入浅析

通过对MAPSOURCE交换格式文件文本属性的深入分析和研究,将其分为基本信息、航点信息、航迹信息三部分,并总结了航点信息的基本结构。借助记事本、Excel生成GPX交换格式航点信息,构建了向MAPSOURCE批量输入航点流程,同时也意味着实现了向GPS批量输入坐标功能,完善了MAPSOURCE、GPS功能,解决了MAPSOURCE、GPS无法批量输入航点坐标的不足,大大提高了地质工作效率。     

基于MAPSOURCE交换格式实现GPS航点批量输入

通过对MAPSOURCE交换格式文件文本属性的深入分析和研究,将其分为基本信息、航点信息和航迹信息3部分,并总结了航点信息的基本结构。借助记事本、Excel生成GPX交换格式航点信息,构建了向MAPSOURCE批量输入航点流程,同时也意味着实现了向GPS批量输入坐标功能,完善了MAPSOURCE、GPS功能,解决了MAPSOURCE、GPS无法批量输入航点坐标的不足,提高了地质工作效率。     

WGS-84坐标批量导入GPS手持机方法研究

Mapsource是对Garmin GPS数据进行存储、管理、编辑的软件,其GPS交换格式文件包括文件头信息、航点信息、航迹信息三部分,借助Excel、记事本生成GPS交换格式文件,构建了向GPS批量导入测点坐标流程:Excel模板生成→GPS交换格式文件生成→数据批量导入GPS,解决了Mapsource和GPS无法批量导入测量点坐标的不足,拓展了GPS手持机在地质测绘工作中的应用效率。     

一种实时数据库向关系数据库进行数据转换的方法及其应用

本提出了一种实时数据库Infoplus向0racle关系数据库进行数据转换的方法，并介绍了其在酒钢炼铁厂和烧结厂数据库管理系统中的应用。该方法针对实时数据库与关系数据库非同步开发和数据批量转换的要求，利用数据库系统内部的触发子和存储过程来实现其功能，在实际应用中收到了良好效果。     

GPS遥感测绘方法在土地测绘中的应用研究

土地测绘是查明我国土地资源利用状况和后期规划、利用的基础依据,因此,如何更准确的、快速的获得现阶段土地资源利用状况是当前亟待解决的问题。以GPS遥感测绘方法为研究对象,以某地区土地测绘实例为分析目标,着重讲述GPS遥感测绘方法中的CORS技术在土地测绘中的应用。结果表明:该技术有效的提高了测绘精度、降低了成本、提高了测绘效率,在土地测绘中具有广阔的应用前景。     

GPS智能调度及安全预警管理系统的应用

从主体车辆自动调度系统、视频安全监控系统、设备跟踪与状态识别系统三个方面阐述了GPS智能调度及安全预警管理系统的构成以及在露天矿山管理的实际应用效果。该系统以GPS技术对车、铲、钻等采矿设备定位,利用无线通讯及计算机等技术处理手段,自动实现对主体设备安全运行监控调度。该系统的应用可促进各种生产资源的合理配置利用,从而实现优化设备配置,提高设备效率,降低消耗及控制安全的目标。     

多面函数在GPS高程拟合中的应用

GPS高程拟合的关键是利用少量GPS/水准重合点,实现GPS大地高与正常高的转换,函数拟合法在实际工程中应用广泛。本文对GPS高程拟合常用方法多面函数法和二次曲面法的原理进行介绍,结合实例用两种方法进行转换,对结果进行比较,证实多面函数法可以提高拟合精度,适用于高程异常较为复杂的地区。     

现代GPS技术在地质测绘中的应用

目前基于科学技术的创新与发展,GPS技术也得到了很大程度的提高,GPS具有准确度高,运行成本低等优点,在我国的各个领域中应用广泛。把 GPS技术引入到地质测绘的工作中,不但能够使地质测绘的结果更加准确、有效,而且也让地质测绘的工作效率得到了很大的提高。本文主要对 GPS技术在地质测绘中的应用问题进行相关的探讨。     

唐钢薄板坯轧机过程控制模型应用与研究

为了提升产品质量、拓展产品结构,唐钢薄板坯连铸连轧生产线于2012年通过自动化系统的二次改造,实现了薄规格热轧板卷的批量稳定生产及铁素体轧制,利用半无头轧制技术使产品厚度达到0.8 mm,达到了改造的预期目的。本文介绍了该轧线过程控制模型的关键技术,总结了实际生产中遇到的影响产品质量的一些问题及主要解决方法,阐述了薄板坯轧机过程控制模型的具体实际应用与研究情况。     

某重卡空气悬架后导向臂生产工艺探讨

依据陕重汽X3000车型用空气悬架后导向臂的产品图纸,设计生产工艺,利用现有板簧生产设备,编制生产工艺卡,制定加工工艺流程,成功生产出该产品。实现产品批量供货,满足了客户要求。弥补了我公司生产重卡导向臂的空白。     

Error Analysis and Cycle-Slip Detection Research on Satellite-Borne GPS Observation

According to the application characteristics of low-earth-orbit satellite-borne global positioning system (GPS) receiver, the influence of GPS measurement data error on cycle-slip detection is analyzed. Then a modified TurboEdit preprocessing method is proposed. In the modified method, a weighted factor which closely relates to the GPS satellite elevation angle is introduced in the cycle-slip detection process. The weighted factor estimates the error of measurement data based on the variation of GPS elevation angle and establishes a relationship between the cycle-slip detection process and error of measurement data. Then the cycle-slip detection judgment is adjusted by the weighted factor. The modification algorithm not only reduces the fault rate of cycle-slip detection, but also promotes the autonomous ability of orbit determination by increasing the quantity of measurement data that will participate in low-earth-orbit-satellite orbit determination. Finally, the modified algorithm is verified by GPS measurement data of GRACE satellite formation.     

Excel--E-mail在统计工作中的应用

依靠E-mail传输数据，用Excel设计统计报表，以此代替手工输入，减轻了工作量，提高了数据准确性，并使出报表的时间大大提高。     

Using GPS to Measure the Impact of Construction Activities on Rural Interstates

The presence of construction work zones on interstates impacts the traveling conditions encountered by motorists. These changes not only affect the traveling public, but also the workers that perform the construction. The impacts of the work being performed also tend to cause queuing. In addition, these periods of construction operations have been linked to an increase in the number of accidents and fatalities that involve road-users and construction crews. A research project was undertaken to evaluate possible options to improve the safety of construction work zones on interstates in the state of Indiana. One component of this project dealt with the use of the Global Positioning System (GPS) to collect traffic data and to relate the traveling conditions encountered with the differing construction activities taking place. This paper describes the GPS study conducted in three different rural work zones on Interstate 65 in Indiana. Multiple runs were conducted at each location to analyze the impact of traveling conditions to changes in lane restrictions during construction periods on traveling conditions.     

Comparative Analysis of Infrastructure Assessment Methodologies at the Small Unit Level

This paper presents a comparative analysis of three different infrastructure assessment tools currently used by the U.S. Army’s combat engineer small units (squad, platoon, company). The infrastructure assessment tools included one pen and paper checklist and two software-based tools based on specialized handheld hardware for data collection in combat conditions. Evaluation was conducted using macroergonomic and applied cognitive task analysis methods with soldiers of varying levels of infrastructure assessment expertise. Each assessment method was evaluated based on performance (time, errors, and accuracy) and usability (ergonomic and cognitive challenges). We found that soldiers documented more accurate data using handheld digital devices instead of pen-and-paper assessment forms, but there was little difference in time between the methods. Contrary to initial expectation, we also found that most soldiers prefer a slightly more difficult to use handheld assessment device with customized checklists rather than an easier to use, less restrictive device. Critiques developed by this research can be used to improve engineering and construction organizations as well as add to our design guidelines for portable infrastructure assessment tools and methods.     

Bayesian Modal Updating using Complete Input and Incomplete Response Noisy Measurements

The problem of identification of the modal parameters of a structural model using complete input and incomplete response time histories is addressed. It is assumed that there exist both input error (due to input measurement noise) and output error (due to output measurement noise and modeling error). These errors are modeled by independent white noise processes, and contribute towards uncertainty in the identification of the modal parameters of the model. To explicitly treat these uncertainties, a Bayesian framework is adopted and a Bayesian time-domain methodology for modal updating based on an approximate conditional probability expansion is presented. The methodology allows one to obtain not only the optimal (most probable) values of the updated modal parameters but also their uncertainties, calculated from their joint probability distribution. Calculation of the uncertainties of the identified modal parameters is very important if one plans to proceed with the updating of a theoretical finite-element model based on these modal estimates. The proposed approach requires only one set of excitation and corresponding response data. It is found that the updated probability density function (PDF) can be well approximated by a Gaussian distribution centered at the optimal parameters at which the posterior PDF is maximized. Numerical examples using noisy simulated data are presented to illustrate the proposed method.     

Blast-furnace dynamics and the static pressure losses

In the interaction of the forces responsible for the motion of batch and gases, account must be taken not only of the gravitational force on the batch column but also of the gravitational force on the gases. Accordingly, the difference in the work of the gravitational forces on fluxes corresponding to the lower and upper pressure losses must be determined. The work increases with increase in gas pressure in the furnace. Consequently, the pressure losses increase without preventing the intensification of the blast-furnace process.     

Biokinetic Parameter Estimation for ISB of PAH-Contaminated Soil

In situ bioremediation (ISB) has been shown to be an effective and cost-efficient method for remediating contaminated ground water and soil. One of the major disadvantages associated with this process is the lack of available kinetic information. The viability of respirometry to determine the relevant biokinetic parameters for degradation of contaminants in groundwater has been proven; however, little work has been done using soil systems. This work investigated the applicability of using respirometer data to determine the biokinetic parameters for soil systems. The specific soil investigated was contaminated with polycyclic aromatic hydrocarbons (PAHs), which contain 16 EPA priority pollutants. The work also investigated a logarithmic growth and modified Lineweaver-Burke approach for experimentally determining the maximum specific growth rate from batch degradation data. As expected, this research concluded that determining all biokinetic parameters from respirometer data was not a viable method for soil systems. Obtaining the maximum specific growth rate from batch degradation data provided more accurate results.     

卷取液压侧导“拍打”控制的应用

结合太钢热连轧1 549 mm线实际,应用了卷取液压侧导"拍打"功能技术,对液压侧导系统进行控制,保证了卷取带钢卷形质量。生产实际表明,在采用该技术后,卷取卷形质量不仅得到了保证,而且也大幅减少了不锈钢、硅钢带钢表面的压坑及端部夹伤。