中国很早就认识到返回式侦察卫星的重要性。
Chinese have long recognized the importance of retrievable reconnaissance satellites.
对电子侦察卫星任务规划模型及算法进行了研究。
Mission planning for electronic reconnaissance satellites is a challenging combinatorial optimization problem, and its scheduling model and algorithm are studied.
侦察卫星探测资源调度是一类基于约束满足的优化问题。
Modeling the scheduling problem of multi-satellites based on the constraint satisfaction;
成像侦察任务聚类是提高成像侦察卫星利用效率的重要手段。
Clustering imaging reconnaissance tasks is a significant way to improve imaging reconnaissance satellite's utilizable efficiency.
面对敌视的近邻和来从遥远伊朗的战略威胁，侦察卫星对以色列尤其重要。
Satellite surveillance is particularly critical for Israel, which faces strategic threats from hostile neighbors and from countries as far away as Iran.
由于地球低轨道更利于收集情报信息，大多被军事侦察卫星所占有。
The low earth orbit is mostly occupied by military reconnaissance satellites for it is convenient to collect intelligence information.
采用阵列信号处理进行高分辨测向是新体制电子侦察卫星的关键环节。
High resolution direction-finding method using array signal processing technique plays a pivotal role in the new electronic reconnaissance satellite system.
四分钟之后，运载火星侦察卫星的巨型火箭脱离了地球，坠入大西洋。
The huge rocket that lifted the orbiter from Earth dropped into the Atlantic Ocean after about four minutes.
空间光学系统的性能在很大程度上决定着太空望远镜、侦察卫星和武器系统的性能。
The performance of the space optical system is determining the performance of space telescope, reconnaissance satellite and weapon system to a great extent.
研究等离子体干扰破坏低轨道侦察卫星功能的效应，提出了用等离子体反卫星的概念。
We aim to study the effectiveness of plasma interference against spying operations of low-orbit satellite.
此外，为了隐瞒其侦察卫星的实际能力，被该科学团队解密的图像一般都在清晰度上作了降低处理。
The images that the scientific group has had declassified, for instance, have had their sharpness reduced to hide the abilities of the reconnaissance satellites.
他一直在研究从装在美国国家航空暨太空总署火星侦察卫星上的照相机发回地球的照片。
Ojha was studying images returned to Earth from the HiRISE camera, aboard NASA's Mars Reconnaissance Orbiter.
仿真结果表明所建模型能够合理反映光学成像侦察卫星对作战结果的影响，可用于从顶层分析航天装备。
The results demonstrate that the models can reflect the effects of the optical imaging reconnaissance satellite on operation outcomes and be used to analyze space equipment from top level.
蓝色的扇子点缀着略带桃色的火星南部极地地区，这张由美国宇航局火星侦察卫星拍摄的照片发布于星期三。
Blue fans decorate the pinkish landscape of Mars's south polar region in a false-color picture taken by NASA's Mars Reconnaissance Orbiter and released Wednesday.
印度于4月20日发射其Risat–2，该军事侦察卫星是在以色列帮助下建造的，携带一部以色列合成孔径雷达。
NEW DELHI - India on April 20 carried out the accelerated launch of its Risat-2, a military surveillance satellite built with help from Israel and carrying an Israeli synthetic-aperture radar.
研究了通过遗传算法模型优化设计侦察卫星轨道高度、轨道倾角、右升交点角及平近点角等轨道参数的方法。
Through the GA model, the orbital elements of each satellite such as altitude, inclination, RAAN and mean anomaly are optimized.
无人机将成为侦察卫星、有人驾驶侦察机的重要补充与增强手段，成为未来战场上广泛应用的一种侦察工具。
UAV will be the supplemental and strengthening way for the satellite and manned aircraft in the reconnaissance missions.
以支持导弹打击大型移动目标为例，以命中目标概率为作战效能指标，建立了光学成像侦察卫星作战效能模型。
Taking missile attacking large size moving target as example, the operational effectiveness model of the satellite was built with probability of hitting target as measure of effectiveness.
信号情报侦察卫星用于侦收地面雷达、通信和测控等系统所辐射的电磁信号并对其定位，是航天侦察的重要手段。
SIGINT(Signal Intelligence) satellite is used to detect, intercept a nd locate electromagnetic(EM) signals radiated by systems such as ground radar, communication and TT&C systems.
利用IDEF1X方法，以成像侦察卫星军用系统为研究对象，按照模型设计的五个步骤，实现了其数据模型的构建。
Using IDEF1X method, taking military system of imaging reconnaissance satellite as a research object, the paper gets the data model according to the five steps of model making.
针对电子侦察卫星在现代战争中的应用日益增多，研究和开发电子侦察卫星模拟系统具有重要的现实意义和实用价值。
With the extensive application of electronic reconnaissance satellite in morden war, research and development of simulation system is practically important and valuable.
传统评估光学成像侦察卫星的威胁一般是采用卫星临空预报方式，这种方式虽然操作简单，但是必然存在一些虚警现象。
Traditional method to assess risk for optical imaging reconnaissance satellite is satellite-on-air forecast, and it is simple to operate but has false alarm.
传统评估光学成像侦察卫星的威胁一般是采用卫星临空预报方式，这种方式虽然操作简单，但是必然存在一些虚警现象。
Traditional method to assess risk for optical imaging reconnaissance satellite is satellite-on-air forecast, and it is simple to operate but has false alarm.
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