观测卫星

洛夫兰说，一颗地球资源观测卫星每16天绕地球运行一周，定期记录下地球表面同一地点的图像。

A single Landsat orbits the Earth in16 days , Loveland said , recording images of the same spot on the surface at regular intervals .

这个观测卫星将继续跟进以往的探索工作，尽全力发掘关于遥远世界的新见解。人们已发现约4500颗环绕其它恒星运行的行星。

Some 4500 planets have been discovered orbiting other stars .

法国SPOT地球观测卫星

France 's spot Earth Observation Satellite

尼日利亚卫星X是该国最近推出的两个地球观测卫星之一。

The NigeriaSat-X is one of two Earth observation satellites that the country recently launched .

应用GPS全球定位系统进行定位测量时，合理选择观测卫星对定位精度影响很大。

In GPS positioning , the selection of the satellite has a great influence on the positioning accuracy .

但GPS作为一种基于卫星的定位系统，其定位精度以及可靠性很大程度上依赖于可观测卫星的个数。

GPS is a satellite-based positioning system , its accuracy and reliability depend on the number of observable satellites .

结果表明，Kalman滤波算法和二阶差分算法均能较好地实现对日观测卫星三轴姿态角和姿态角速度的估计。

The results indicate that both Kalman filtering algorithm and second difference algorithm can be used to well estimate the attitude angle and attitude angular velocity of the satellite .

基于某对日观测卫星，将陀螺+太阳导行镜组合Kalman滤波算法与以上两种无陀螺定姿算法进行了仿真比较。

Based on a solar observation satellite , the effect of the Kalman filtering algorithm using gyro and solar guide telescope is compared with that of the attitude determination algorithms only using attitude sensor .

1999年4月美国发射的Landsat-7是美国Landsat计划发射的第7颗陆地观测卫星。

Landsat-7 spacecraft , which was launched in April 1999 is the seventh global survey satellites of the Landsat Program .

电梯正在运行中。那项法律已经没有效用了。这里是VOA特别英语科技报道。尼日利亚发射了首颗由非洲人设计和制造的卫星。NigeriaSat-X卫星是该国最近发生的两颗对地观测卫星中的一颗。

The NigeriaSat-X is one of two Earth satellites that the country recently launched .

空间太阳望远镜（SST）是中国未来重要的太阳观测卫星，中国科学院国家天文台和航天部五院目前正在开展该卫星的研制工作。

The Space Solar Telescope ( SST ), an important solar observing satellite in the future , is being developed under the corporation of National Astronomical Observatories , Chinese Academy of Sciences and Chinese Airspace Department .

本文研究了多卫星任务规划框架，在进行合理假设的基础上，提出了对地观测卫星任务规划问题的约束规划模型，并采用禁忌搜索算法对CSP模型进行求解。

The paper studies the framework of multi-satellite mission planning , builds the CSP ( Constraint Satisfaction Problem ) model of EOS mission planning problem under some reasonable assumption , and solves the model with TSA ( Tabu Searching Algorithm ) .

作为马里兰大学的一位遥感科学家，马修·汉森（MathewHanson）也利用地球资源观测卫星的数据监视全球范围内土地使用的变化。

Matthew Hansen also taps into Landsat data to watch changing land use on a global scale in his role as a remote sensing scientist at the University of Maryland .

观测卫星（OCO）的测量数据可以给我们一个指标，以现在我们燃烧石化燃料的速度还能有多久。

OCO measurements could give us an indication of how much longer we can burn fossil fuels at the rate that we 're burning them now .

对地观测卫星（ESO）中分辨率成像光谱仪（MODIS）传感器因其具有高时间分辨率、高光谱分辨率、适中的空间分辨率等特点，非常适合大范围、长时期、动态的干旱监测。

EOS ( earth observation satellites ) and MODIS ( moderate imaging spectra ) data are very suitable for vast extent , long-term and dynamic drought monitoring for its high temporal resolution , high spectral resolution and moderate spatial resolution .

该国如今正在建造两颗自己的地球观测卫星&NigeriaSat-2和NigeriaSat-3。

The country has now built two Earth observation satellites of its own & NigeriaSat-2 and NigeriaSat-3 .

在对地观测卫星ASTER传感器的15个波段中，有5个（10~14波段）是热红外波段，特别是其中的第13和14波段可以被用来反演地表温度。

ASTER is an EOS instrument in Terra satellite which owes 15 bands . Five of them are TIR bands , which can be used to retrieve land surface temperature ( especially for band 13 and 14 ) .

印度空间研究组织（ISRO）上个月（10月18日）宣布了发射两颗地球观测卫星的计划，它们将加入现有在轨的6颗卫星的行列。

The Indian Space Research Organisation ( ISRO ) announced plans last month ( 18 October ) for two Earth observation satellites , which will join six already in orbit .

热带降雨观测卫星TRMM和全球降雨观测计划GPM是进行全球尺度的降雨观测的国际卫星观测计划，对全球变化研究具有很大作用。

Tropical Rainfall Measuring Mission ( TRMM ) and Global Precipitation Measurement ( GPM ) are international satellite observation plans to observe precipitation at global scale , playing an important role in global change .

平壤方面称，从朝鲜西北部发射的这枚火箭将会把一颗地球观测卫星送入轨道，这是为了庆祝4月15日朝鲜政权创立者金日成（Kimil-sung）诞辰100周年。

The launch of the rocket , which Pyongyang said would put an earth observation satellite into orbit , from the north-west of the country marked the centenary of the birth of Kim Il-sung , founder of the nation , on April 15 .

以构建柔性仿真平台为目标，采用面向对象的思想方法及多种相关技术，并以对地观测卫星系统为主要研究对象，设计实现了“多卫星系统综合效能仿真分析软件（MSSE）”。

Aimed at building flexible platform , adopted Object-Orient paradigm and many other correlative technology , and focused on Earth Observation satellite systems , the Integrated Modeling and Simulation Software for Effectiveness of Multi-Satellite Systems ( MSSE for short ) is designed and implemented .

天文台推出“地球观测卫星图像”网页

The observatory launches webpage on " earth observing satellite images "

对地观测卫星区域综合组网及性能分析方法研究

Study on Synthetic Regional Observation Satellite Constellation and Capability Analysis

地球观测卫星系统性能指标及其仿真应用研究

Capability Index of Earth Observation Satellite System and Its Application in Simulation

复杂约束对地观测卫星成像调度技术研究

Imaging Scheduling of an Earth Observing Satellite with Complex Constraints

对地观测卫星成像调度的多目标约束修正方法

A Multi-objective Constraint Modification Approach for Imaging Scheduling of Earth Observing Satellite

以对地观测卫星为例，分析卫星的结构功能和飞行任务的特点，并在此基础上建立卫星智能规划与调度系统。

An intelligent planning and scheduling system for earth observation satellite is developed .

一类对地观测卫星成像调度系统的设计与实现

Design and Implementation of Imaging Scheduling System for EOS

低轨对地观测卫星凝视成像仪探讨

Discussion on Staring Imager for LEO Earth Observation Satellite

地球观测卫星轮控系统单通道全物理仿真

Single Axis Physical Simulation for Wheel Control System of the Earth Observation Satellite