Development of a Digital Signal Processing System for the X-ray Microcalorimeter onboard ASTRO-H

被引：7

作者：

Seta, Hiromi ^{[1
]}

Tashiro, Makoto S. ^{[1
]}

Terada, Yukikatsu ^{[1
]}

Shimoda, Yuya ^{[1
]}

Onda, Kaori ^{[1
]}

Ishisaki, Yoshitaka ^{[2
]}

Tsujimoto, Masahiro ^{[3
]}

Hagihara, Toshishige ^{[3
]}

Takei, Yoh ^{[3
]}

Mitsuda, Kazuhisa ^{[3
]}

Boyce, Kevin R. ^{[2
,4
]}

Szymkowiak, Andrew E. ^{[5
]}

机构：

[1] Saitama Univ, Dept Phys, Sakura Ku, 255 Shimo Okubo, Saitama 3388570, Japan

[2] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 192397, Japan

[3] Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Yale Univ, Dept Phys, New Haven, CT 06511 USA

来源：

LOW TEMPERATURE DETECTORS LTD 13 | 2009年 / 1185卷

关键词：

Signal processing electronics; SUZAKU;

D O I：

10.1063/1.3292332

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A digital signal processing system for the X-ray microcalorimeter array (SXS) is being developed for the next Japanese X-ray astronomy satellite, ASTRO-H. The SXS digital signal processing system evaluates each pulse by an optimal filtering process. For the ASTRO-H project, we decided to employ digital electronics hardware, which includes a digital I/O board based upon FPGAs, and a separate CPU board. It is crucially important for the FPGA to be able to detect the presence of an "secondary" pulses on the tail of an initial pulse. In order to detect the contaminating pulses, we have developed a new finite impulse response filter, to compensate for the undershoot in the derivative. By employing the filter it is possible for FPGA to detect the secondary pulse very close the first pulse, and to reduce the load of the CPU in the secondary pulse searching process.

引用

页码：278 / +

页数：2

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