奥门新浦京网999：我国将于11月发射全世界首颗脉冲星导航试验卫星

The China Academy of Space Technology has announced plans to launch the worlds first X-ray pulsar navigation satellite (XPNAV－1) in November, Xinhua reported.据新华社报导，中国空间技术研究院早已宣告，计划将于11月份升空全球首颗X射线脉冲星导航系统卫星（XPNAV－1）。The move brings autonomous spacecraft navigation and a more precise deep-space GPS one step closer to reality.这一措施将使得航天器自律导航系统、以及更为精确的深度空间GPS定位更进一步相似现实。

X-ray pulsar navigation is an innovative navigation technique wherein periodic X-ray signals emitted from pulsars are used to determine the location of a spacecraft in deep space.X射线脉冲星导航系统是一种创新性的导航系统技术，其中脉冲射电源可以收到周期性的X射线信号，可以用来在深度空间中确认航天器的方位。Current ground-based navigation methods are limited by the time delay between spacecraft and the Earth.由于航天器和地面接收器之间的时间延迟，目前的地面导航系统技术受到了很大的容许。

However, for certain type of pulsars, called millisecond pulsars, pulses of radiation occur with the regularity and precision of an atomic clock.但是用于被称作“毫秒脉冲射电源”的装置，脉冲电磁辐射可以具备和原子钟一样的规律性和精度。As a result, in some scenarios, the pulsar X-ray can take less time to estimate a location. This leads to more precise measurements of a spacecrafts location.因此，在某些情况之下，X射线脉冲射电源可以用较少的时间来量度物体的方位。这就造成了对航天器方位的更加精确测量。

However, since X-rays from pulsars are absorbed by the atmosphere, scientists must launch satellites to continue research of the new technology.然而，由于脉冲射电源收到的X射线需要被大气所吸取，所以科学家们必需发射卫星来对这一新技术之后展开研究。According to Shuai Ping, chief scientist behind the research of XPNAV-1 satellite, the key aim of this satellite is to detect the details of X-ray signals of 26 nearby pulsars, and to create a pulsar navigation database.据XPNAV-1卫星研究项目首席科学家帅平回应，这颗卫星的主要目的是要检测地球附近26颗脉冲星的X射线信号详细信息，创建一个“脉冲导航系统数据库”。This target could be achieved within five to 10 years, Shuai estimates.据帅平估算，这一目标可以在5到10年之间已完成。

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