1) X-ray source-based navigation for autonomous position determination program(XNAV)
X射线脉冲星自主导航系统
2) x-ray pulsar navigation
x射线脉冲星导航
1.
The spacecraft\'s autonomous navigation technology in the future is a best way by means of x-ray pulsar navigation;it can be used in the determi-nation of the Near-space,the solar system and the Milky Way,such as the position,speed,attitude and time of orbiting space-crafts,so as to achieve the autonomous precision navigation and self-management operation.
航天器自主导航的未来最佳技术途径是x射线脉冲星导航;它能够用于测定在近地空间、太阳系和银河系等飞行的航天器位置、速度、姿态和时间,实现这些航天器的全程高精度自主导航和运行管理,具有广阔的工程应用前景和军事战略意义;但是它目前还处于初期研究阶段。
3) single pulsar for automatic navigation(SPAN)
单脉冲星自主导航
4) X-ray pulsar
X射线脉冲星
1.
Research on detectors in X-ray pulsars-based navigation system;
基于X射线脉冲星导航系统探测器研究
2.
Use of X-ray pulsar-based navigation method on interplanetary trajectory
X射线脉冲星导航在行星际轨道上的应用
3.
The research on X-ray pulsar navigation and positioning technology
X射线脉冲星导航定位技术研究
5) X-ray pulsars
X射线脉冲星
1.
The Research of the Navigation of Spacecraft Based on the X-Ray Pulsars;
基于X射线脉冲星的航天器自主导航方法研究
2.
For reducing the computation complexity of pulse period ambiguity resolution for X-ray Pulsars NAVigation (XPNAV) and improving its convenience in engineering implementation, the Optimization Model for 4 X-ray pulsars localization is presented based on the orthogonality principle.
为降低X射线脉冲星导航定位(XPNAV)系统解脉冲周期模糊的复杂度,提高其工程实用性,该文提出一种新的XPNAV系统解脉冲周期模糊算法。
3.
In this paper, firstly,the algorithms of autonomous navigation based on X-Ray pulsars are introduced;secondly the model of the extended Kalman filter which is used in the autonomous navigation based on X-Ray pulsars is established;thirdly,taking the geosynchronous orbit for example,the accuracy of naviga- tion with different initial error,differe.
基于X射线脉冲星的天文自主导航方法稳定、可靠、精度高,是航天器自主导航领域重要的发展方向。
6) Pulsar-X-source
脉冲星-X射线源
补充资料：X射线脉冲星
具有短周期的X射线脉冲的天体,脉冲周期极短而且稳定。明显的例子是武仙座 X-1（脉冲周期掦=1.24秒）和半人马座X-3。现已证认出，这一类X射线源是密近双星。它们各由两个子星组成，一个是中子星，另一个是光学子星。光学子星通过洛希瓣（见临界等位面）外流和星风等形式不断向外抛射物质。中子星吸积由光学子星发出的物质。中子星的引力场很强，吸积到中子星的物质可以获得很大的动能，在中子星表面转化为 X射线辐射──热轫致辐射。X射线辐射的短周期脉冲结构就是由中子星的自转引起的。目前已观测到的这类 X射线脉冲星周期最短的是0.7秒，最长的可达835秒，比射电脉冲星的周期要长。绝大多数 X射线脉冲星有明显的射电辐射。观测得知，绝大多数射电脉冲星不发射X射线,只有蟹状星云脉冲星发出很强的 X射线脉冲辐射，因此它也是X射线脉冲星。但蟹状星云脉冲星与上述的X射线脉冲星不同，它不属于双星X射线源，而且它的X射线辐射机制是非热性质的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条