介绍了国内外微小卫星的现状与发展趋势。
The current status and development direction of micro-satellite in home and abroad are introduced.
微小卫星是现代航天技术中的重要研究领域。
Miniature satellite is one of the most important research fields in the modern aeronautic technology.
微小卫星正以其独特的优势在越来越多的领域发挥重要作用。
Because of its special superiority, micro-satellite is playing an important role in more and more fields.
针对极轨微小卫星，提出了一种基于磁强计的改进EKF算法。
To the pole orbit micro-satellite, this paper provides a modified EKF arithmetic based on magnetometer individually.
现代微小卫星具有重量轻、性能好、研制周期短、造价低等优点。
The microsatellite characterized with light weight, good performance, short development cycle and low cost.
现代微小卫星具有重量轻、性能好、研制周期短、造价低等优点。
The feature of microsatellite includes light weight, good performance, short development cycle and low cost.
现代微小卫星具有重量轻、性能好、研制周期短、造价低等优点。
The microsatellite characterized light weight, good performance, short development cycle and low cost.
微小卫星系统是一个可靠性要求很高的系统，需要由具有容错能力的星载计算机来控制。
Small satellites need computer systems with fault tolerance for the reason of requiring high reliability.
针对微小卫星测控应答机的体积、重量及其功能灵活性，研究了接收机载波恢复环的实现方法。
The implementation method of the receiver carrier recovery loop of microsatellite affects the volume, weight and function reconfigurability of the transponder.
为提高在轨微小卫星的使用效能及生存能力，提出一种微小卫星低可观测外形飞行姿态规划算法。
A flight attitude planning algorithm is developed for low observable micro-satellite shields to enhance the on-orbit satellite's survivability and operational effectiveness.
以立方体微小卫星为例，分析了由多个太阳电池板电流估计太阳矢量的问题，提出了受限最小二乘法。
Taking the hexahedral micro-satellite as an example, the solar vector estimation problem based on current generated by solar panels was analyzed, and the limited least-square method was proposed.
结合陀螺在微小卫星上的使用，提出了一种不依赖于其余敏感器信息的陀螺随机常值偏置实时在轨标定技术。
According to gyro application in micro-satellites, a new gyro bias real-time on-orbit calibration technology is presented and it is independent of any other sensors.
分析认为PPT是一种先进的小推力动力装置，特别适合于微小卫星的轨道转移、姿态控制、位置保持以及星座编队飞行。
It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.
针对微小卫星星载计算机系统对可靠性和实时性的苛刻要求，提出一种冷、热备份并存的微小卫星星载计算机系统设计方案。
A design project of on-board computers of micro-satellite including spare system and parallel system is proposed according to the rigorous requirements for reliability and real-time performance.
微小卫星本身不复杂，研究把各种新技术应用于微小卫星是其中的应用热点，而总线数据传输和管理是其中相当关键的一部分。
Although Small satellite is not so complex, the research on new technology in satellite is paid more attention to while temperature control and management of bus data transmission is the key point.
因此，如何构建合适的卫星测试系统，以及如何制定合理的卫星测试方案来开展测试工作，成为决定微小卫星工程成败的关键因素。
Therefore, how to build a suitable satellite test system and devise a reasonable test protocol, become akey factor in the success of a satellite project.
第三章，建立了卫星轨道动力学模型，设计了GPS和运动方程组合的卡尔曼滤波器，并针对不同轨道高度的微小卫星进行了定位仿真。
In chapter 3, the orbit dynamics models are established, the Kalman Filter of the GPS and kinematics equation combined are designed, and simulations of different orbit Micro-satellite are done.
基线在星载干涉SAR的系统设计和数据处理中起着非常重要的作用，对于微小卫星编队系统来说稳定性问题是干涉SAR空间基线的一个重要问题。
Baseline is very important to spaceborne interferometric SAR system design and data processing. For a micro-satellite cluster system, stability is an important problem for spatial baseline of INSAR.
当凯什兰博士和他的团队观测火星时，他们可以分辨火星的两个微小卫星——这样的任务如果是利用牛顿的望远镜则需要一个直径最少长达30厘米的镜面。
When Dr Koechlin and his team pointed 12 it at Mars they could distinguish that planet's two tiny moons-a task which would require a Newtonian telescope with a mirror at least 30cm across.
如此平滑说明它们的表面非常年轻——可能不到1000万年，和卫星40亿年的年龄相比，只是一个微小的分子。
Such a smooth complexion implies that the surface is very young - probably less than 10 million years old, a tiny fraction of the moon's 4-billion-year age.
泰勒博士和沙巴卡博士任职于马里兰州的戈达德太空遨游飞翔中心，他们负责观测那些可以或许检测海水流动引起的地球磁场的微小变化的卫星。
Dr Tyler and Dr Sabaka, who work at the Goddard Space Flight Centre, in Maryland, observe that satellites can detect small changes in Earth's magnetic field induced by the movement of water.
基于多冲量轨道机动控制，研究应用微小推力发动机来实现卫星编队轨道机动控制的方法。
Based on the multi-impulse method of orbit maneuvers, the method to enable the whole satellite formation to maneuver with micro-propulsion thrusters was studied in this paper.
许多人造卫星在测量太阳系行星的微小运动。
Many satellites measure minute movements of the planets revolving around the sun.
许多人造卫星在测量太阳系行星的微小运动。
Many satellites measure minute movements of the planets revolving around the sun.
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