Development of a Digital Signal Processing System for the X-Ray Microcalorimeter Onboard ASTRO-H (II)

Development of a Digital Signal Processing System for the X-Ray Microcalorimeter Onboard ASTRO-H (II)
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ASTRO-H 机载 X 射线微热量计数字信号处理系统的开发(II)

DOI:
10.1007/s10909-012-0483-0
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发表时间:
2012
影响因子:
2
通讯作者:
他7名
他7名
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
下田優弥、瀬田裕美、田代信、寺田幸功、石崎欣尚、辻本匡弘;他7名

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脉冲形状处理器是ASTRO-H机载微热量计仪器的数字信号处理电子设备。从2×18通道接收数字化波形(14位,12.5 kHz采样),两个相同的PSP-A和-B单元触发x射线事件,分配五种事件等级,并执行最佳滤波以测量6×6微热量计像素上的能量沉积。一个PSP单元由一块FPGA板和两块CPU板组成。本文介绍了事件处理算法,以满足信号处理的要求,以及FPGA和CPU之间的任务共享。
The Pulse Shape Processor is a digital signal processing electronics for the microcalorimeter instrument onboard ASTRO-H. Receiving digitized waveform (14 bit, 12.5 kHz sample) from 2×18 channels, two identical units of PSP-A and -B trigger X-ray events, assign five kinds of event grade, and perform optimal filtering to measure energy deposit on the 6×6 microcalorimeter pixels. One unit of PSP is composed of one FPGA board and two CPU boards. This paper describes the event processing algorithm to fulfill requirements for the signal processing, and task sharing between FPGA and CPU.
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