共查询到18条相似文献,搜索用时 77 毫秒
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气象卫星资料处理软件再工程方法与实践 总被引:1,自引:0,他引:1
分析了现行气象卫星资料处理软件开发体制和模式的弊端,归纳并总结了卫星气象应用系统软件工程化在整体上的原则性要求,提出了风云二号气象卫星02批资料处理应用软件开发方法,对气象卫星资料应用科学研究人员、软件工程化人员和系统集成人员进行了任务界定,分析和总结了风云二号卫星02批资料处理软件再工程过程中的开发模式、准则和有关要求。最后按再分析、再编码、再测试3个阶段简要介绍了对风云二号卫星02批资料处理软件进行再工程改造的实施情况。 相似文献
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1引言自L波段雷达在茫崖站运行以来,在使用过程中出现了一些问题,给正常工作产生了一定影响,现将出现的问题予以分析,并提出相应的解决办法。2出现问题2.1湿度片不容易合格茫崖地区比较干燥、湿度小,仪器的湿度值比标准湿度值偏低,做基测时其差值超过合格标准,给正常放球带来不 相似文献
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自动气象站对各项自动化仪器特别是最后存储各项记录的计算机依赖过重,在一定程度上造成了气象数据的不安全性。硬盘上的数据文件一旦发生损坏或丢失,后果将十分严重。在自动站的运行中如何确保数据的安全性已成为今后工作中的一项重要任务。1 使用瑞星杀毒软件2003增强版实现硬盘数据的备份与恢复1.1 备份首先打开瑞星杀毒软件,在“设置”的选项中点击“硬盘备份”,设置数据备份的时间周期。由于是自动运行,用户设置完毕后软件就会在指定的时间进行备份。当硬盘数据由于某些原因而丢失时,可进行数据恢复。1.2 恢复重新启动计算机后,… 相似文献
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静止卫星云图是科研业务工作的重要观测数据。在静止气象卫星更新换代的背景下,旧版静止卫星云图处理系统已经不能适应处理新数据的要求。文章简要介绍了改进的静止卫星云图软件处理系统的新数据接口与新功能。新软件能够兼容的数据包括9210下发的多种类型AWX格式卫星资料,GPF(Geostationary-satellite Project File)格式资料,HDF5格式云图资料,北京大学存储的GMS-5、GOES-9、MTSAT-1R等资料;新功能包括云图动画、云图通道切换、客观分析诊断、等值线图、流线图、格点矢量图、云图的增强显示、通道间计算、TBB/反射率等值线图、TBB统计、卫星数据格式转换等。 相似文献
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本系统可以完成山西省各气象台站人工站及自动站多种类型的气象观测资料的接收,对接收后的资料进行解包,并将资料接收情况进行登记,系统把资料接收情况生成回执文件反馈回资料发送单位。业务管理部门可以通过系统制作的报表和Intranet查询登记库来了解资料到达情况。本系统还简化了各种资料的审核过程。 相似文献
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This study introduces some innovations in the data processing algorithm for Chinese FY meteorological satellites. Issues about satellite image navigation, radiation calibration, and data assimilation are discussed.
A time series of the earth's disk center-line count provides information on the orientation of the satellite spin axis. With this information, the altitude parameters of the satellite and then the earth disk location in the south-north direction may be solved. In each spin cycle, the satellite views the sun and the earth. Given the satellite position and altitude, the angle (β) subtended at the satellite by the sun and the earth can be calculated and predicted. Thus, the earth's disk location in the east-west direction is fixed. Based on this principle, we derived an automatic image navigation algorithm for FY2 geosynchronous meteorological satellites with an accuracy approaching pixel level.
The FY2 meteorological satellite traveling in a geostationary orbit suffers a large amount of radiation from the sun. The radiation varies on both diurnal and annual scales, which causes radiation responses in the thermal infrared (IR) bands wherein the wavelengths greater than 3.5 μm vibrate periodically on scales of hours to years. These vibrations must be precisely calibrated. First, based on the accurate estimation of the radiant contribution from the front-optics, the variation characteristics of the calibration parameters are obtained on a temporal scale of hours from the space-borne inner-blackbody (IBB) measurement results. Second, the in-orbit measured radiation of the lunar surface is referenced and utilized to correct the sys- tematic bias of the IBB calibration from daily to annual scales. By using such algorithms, we achieved a calibration accuracy of the FY2 satellite's IR imagery of less than 1 K.
The on-orbit satellite instrument parameters play an important role in data quality; however, they may be mis-measured due to limitations in the measurement conditions or may be 相似文献
A time series of the earth's disk center-line count provides information on the orientation of the satellite spin axis. With this information, the altitude parameters of the satellite and then the earth disk location in the south-north direction may be solved. In each spin cycle, the satellite views the sun and the earth. Given the satellite position and altitude, the angle (β) subtended at the satellite by the sun and the earth can be calculated and predicted. Thus, the earth's disk location in the east-west direction is fixed. Based on this principle, we derived an automatic image navigation algorithm for FY2 geosynchronous meteorological satellites with an accuracy approaching pixel level.
The FY2 meteorological satellite traveling in a geostationary orbit suffers a large amount of radiation from the sun. The radiation varies on both diurnal and annual scales, which causes radiation responses in the thermal infrared (IR) bands wherein the wavelengths greater than 3.5 μm vibrate periodically on scales of hours to years. These vibrations must be precisely calibrated. First, based on the accurate estimation of the radiant contribution from the front-optics, the variation characteristics of the calibration parameters are obtained on a temporal scale of hours from the space-borne inner-blackbody (IBB) measurement results. Second, the in-orbit measured radiation of the lunar surface is referenced and utilized to correct the sys- tematic bias of the IBB calibration from daily to annual scales. By using such algorithms, we achieved a calibration accuracy of the FY2 satellite's IR imagery of less than 1 K.
The on-orbit satellite instrument parameters play an important role in data quality; however, they may be mis-measured due to limitations in the measurement conditions or may be 相似文献
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目前运行的国内气象通信系统存在着交换平台(操作系统平台)不统一、数据接口不统一、数据交换软件不统一等问题,导致每新增一类投入业务使用的观测资料,从资料采集、资料传输、资料传输监视到资料应用等都自成一体,给通信传输管理带来很大不便。LDM(Local Data Manager)软件作为底层通信传输和管理系统,可实现上述三者的统一。通过对目前国内气象通信系统存在的传输软件不统一、文件数目多时造成拥塞和文件优先级无法保证问题的分析,对LDM软件灵活和有效的数据分发功能及用户可配置的、支持分布式的处理和事件驱动的特点进行了介绍,并以建立的基于LDM的实时气象资料分发服务系统为研究和试验原型,对LDM软件及目前国内气象通信系统软件进行对比分析,结果表明:采用LDM软件可以提高传输业务的整体工作质量,解决目前国内气象通信系统存在的问题,即LDM软件较适用于我国气象数据交换业务。 相似文献