对基于云GIS技术的地理信息服务模式探析

来源 :计算机产品与流通 | 被引量 : 3次 | 上传用户:dillydally
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
云GIS技术是当前GIS应用的重点,利用其技术自身的优势,促使当前的地理信息服务平台构建全新的服务方式,以满足当前的需求。基于此,本文从当前的云GIS地理信息服务新方式入手,深入进行分析,并提出云GIS四层服务体,通过实践应用,明确其自身特征,促使当前的云GIS技术应用突破传统的应用限制,以供参考。
其他文献
在闽江河口鳝鱼滩,选择了不同淹水状况的两条采样带(采样带A,远离主潮沟且退潮后无淹水;采样带B,靠近主潮沟且退潮后有淹水),以短叶茳芏(Cyperus malaccensis)沼泽、互花米草(Spartina alterniflora)沼泽和扁穗沙草(Cyperus compressus)沼泽为研究对象,于2015年7月26日(小潮日),在采样带中的6个采样点,采集了0~60 cm深度的土样,测定
期刊
高光谱数据具有光谱波段多、维度高、数据量庞大的特点,为了提高高光谱数据的处理速度,需要进行降维处理,而波段选择是高光谱降维的基本方法之一。综合考虑,提出基于高光谱波段选择相关性、信息量及类间可分性的方法。通过虚拟维度确定高光谱图像的本征维数,并根据波段间的相关系数进行子空间划分;提出利用基于信息量的离散波段指数,在各个子空间中计算出最大的波段指数构成子集;根据类间可分性准则在子空间中选出可分性因子
期刊
Elevated temperatures as a consequence of global warming have significant impacts on the adaptation and survival of microalgae which are important primary producers in many ecosystems. The impact of t
期刊
The combination and application of the mobile internet techniques with the weather radar monitoring data and the numerical weather prediction data were introduced,and the smart phone weather routing a
期刊
The absorption coefficient of water is an important bio-optical parameter for water optics and water color remote sensing. However, scattering correction is essential to obtain accurate absorption coe
期刊
We modified the sediment incipient motion in a numerical model and evaluated the impact of this modification using a study case of the coastal area around Weihai, China. The modified and unmodified ve
期刊
We picked new traveltime residual datasets in three frequency bands(0.02–0.1, 0.1–0.8, and 0.8–2.0 Hz) for P-waves from 793 teleseismic events and two frequency bands(0.02–0.1 and 0.1–0.8 Hz) for S-wa
期刊
The Wenchuan earthquake is a natural disaster. Its occurrence and aftermath have demonstrated the critical roles of seismology and earthquake engineering in reducing seismic hazards and damages. Howev
期刊
The transitional area between the northeastern margin of the Qinghai-Tibetan Plateau, Ordos Block and Alxa Block,also being the northern segment of the North-South Seismic Belt, is characterized by co
期刊
基于谷胱甘肽(Glutathione,GSH)含量变化和铜吸附性分析地卷、平盘软地卷和犬地卷响应Cu~(2+)胁迫的差异,以了解谷胱甘肽在低等生物地衣抗重金属胁迫中的作用。分光光度法和火焰原子吸收方法分别测定地衣体的GSH与细胞内、外的铜含量。结果显示,低浓度Cu~(2+)胁迫下,3种地卷GSH均呈上升趋势,4 mmol/L时达最高;5-8 mmol/L时,地卷和犬地卷的GSH逐步下降较明显,但仍
期刊