卫星系统

Ecosystem management is the main stream of natural resource management now. The focused works of EM are collecting spatial data by remote sensing, raser surveyors and permanent sampling plots which standard for each ecosystems. Experimental management and monitoring would proceed to do adaptive management for accomplishing the management objectives of forest health, productivity and biodiversity maintaining.

生态系经营是目前自然资源经营的主，而其工作的重点在於用遥航测及卫星定位系统、射测仪等测仪器收集资，经取样、选址具有代表性的长期生态研究区或永久样区，进试验性经营、监测与适应经营调整，以达到森健康、生产提高、多样性回的生态系经营目标。

Detection the Ambiguity slip is key factor for position or attitude estimation of high dynamic SAR satellite using GPS. The ambiguity slip successfully can be detected by ionosphere remanet error of dual frequency.

周跳的检测是高动态卫星利用GPS系统进行定位或姿态测量的关键因素，利用双频电离层残差可以有效地实现周跳检测。

The Ikonos data and the QuickBird data identified every rice land aquatic habitat by village and strata. Ikonos and QuickBird visible and NIR data of geo-referenced riceland An. arabiensis aquatic habitats can develop and implement an Integrated Vector Management program based on larval productivity.

因此，可根据QuickBird 0.6 m卫星数据的土地利用和覆盖指数和阿拉伯按蚊滋生点幼虫的增殖特性，在当地建立和应用媒介综合防治系统(IVM-Integrated Vector Management)。

The research team monitored 50 animals on the Samburu National Reserve in northern Kenya, tracking them with GPS collars(13) and taking automatically dated and timed photos.

这个研究小组观察了位于肯尼亚北部的桑不鲁国家公园的50只大象，用套在大象脖子上的GPS卫星定位系统追踪它们，并按日按时自动拍取照片。

Early warning satellite system is important components of defense system,and the study of its status and detecting capability has great signality.

0引言预警卫星作为监视、探测、发现和跟踪敌方战略导弹的重要手段，在战略防御系统中起到重要的作用。

NNSS and GPS are two main stellite navigation systems in the world.

NNSS和GPS是当今世界的两大卫星导航系统。

There are some disadvantages in segmenting and selecting while neglecting the characteristics of satellite-based sensor, which leads to unefficient utilization of time window; the end time is easyily postponed.

目前大多数国家的卫星任务调度系统都只考虑解决点目标的观测任务，只有美、法少数几个国家研究并解决了区域目标的分割与优选问题，但现有方法对星载传感器成像特性考虑得不够，时间窗口利用率较低，易导致任务完成期拖后。

If a satellite were to become unhealthy during an unmonitored period, GPS users could be adversely affected.

如果卫星正在成为一个不受监督的过程中不健康的时期，全球定位系统的用户可能会受到不利影响。

The addition of real-time tracking data from NGA's monitor stations has eliminated all unmonitored areas, and currently, on average, GPS satellites are seen by more than four monitor stations simultaneously.

在实时从地理情报监测站的跟踪数据除了消灭了不受监督的地区，目前平均， GPS 卫星定位系统是由400多监测站同时看到。

In this thesis. Interband coding techniques are investigated for effective compression of multiband images such as color images and hyperspectral images. A multiband lossless compression system based on context matching prediction schemes is proposed. The observation is that the interband correlation in multiband images is usually greater than the intraband.

中文摘要此论文探讨有效率的压缩彩色影像及卫星影像类型的多频带影像利用频带间预测编码的技术，提出一种基於频带间内文比对预测方式的多频带影像无失真压缩系统，观察结果显示多频带影像邻近频带相互之间冗余特性大於频带内。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。