摘要
脉冲星脉冲到达时间观测系统建立在２５ｍ射电天线的１８ｃｍ波段上，消色散采用了２ｘ１２８ｘ２．５ＭＨｚ多通过滤波器和数字化器，数据采集系统由ＰＣ机完成．１９９９年５月至６月间建立了基于常温接收机的到达时间观测系统．观测到的最弱源的平均流量密度为４ｍＪｙ．
A pulsar timing observing system operating at 18cm is developed for the 25m radiotelescope at Urumqi Astronomical Observatory. The de-dispersion is provided by a 2 1282.5 MHz filter bank and digitizer, operated by a PC data acquisition system. The system isoperational by mid-1999 with a room temperature receiver. The lowest pulsar flux densityobservable is 4 mJy.
基金
国家自然科学基金
国家攀登计划基金
高等学校博士学科点专项科研基金
