PuMa, a digital pulsar machine

被引:47
作者
Voûte, JLL
Kouwenhoven, MLA
van Haren, PC
Langerak, JJ
Stappers, BW
Driesens, D
Ramachandran, R
Beijaard, TD
机构
[1] Univ Utrecht, Astron Inst, NL-3508 TA Utrecht, Netherlands
[2] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands
[3] Instrumentele Grp Fys, NL-3508 TA Utrecht, Netherlands
[4] Netherlands Fdn Res Astron, NL-7990 AA Dwingeloo, Netherlands
来源
ASTRONOMY & ASTROPHYSICS | 2002年 / 385卷 / 02期
关键词
instrumentation : detectors; instrumentation : miscellaneous; pulsars : general;
D O I
10.1051/0004-6361:20020123
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have designed and constructed PuMa, a pulsar machine that has both a baseband recording and a digital filterbank mode. Its design is based on the use of digital signal processors (DSPs). Their operation is controlled by software, which makes PuMa reconfigurable, flexible and easy to operate. The maximum number of channels in the digital filterbank mode is 32 768 over a bandwidth of 80 MHz. This makes PuMa suitable for pulsar observations at low sky frequencies. The maximum bandwidth in baseband recording mode is two times 10 MHz. The machine was installed at the Westerbork Synthesis Radio Telescope in The Netherlands in 1998. We discuss in some detail PuMa's technical properties and capabilities. Recent observations, a sample of which are presented here, demonstrate its capabilities and that it is performing up to its specifications.
引用
收藏
页码:733 / 742
页数:10
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