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Author  |
Aliaga, R.J. | ||||
| Title | Real-Time Estimation of Zero Crossings of Sampled Signals for Timing Using Cubic Spline Interpolation | Type | Journal Article | ||
| Year | 2017 | Publication | IEEE Transactions on Nuclear Science | Abbreviated Journal | IEEE Trans. Nucl. Sci. |
| Volume | 64 | Issue | 8 | Pages | 2414-2422 |
| Keywords | Digital arithmetic; digital circuits; digital timing; field-programmable gate array (FPGA); interpolation; signal processing algorithms; splines time estimation; time resolution | ||||
| Abstract | A scheme is proposed for hardware estimation of the location of zero crossings of sampled signals with subsample resolution for timing applications, which consists of interpolating the signal with a cubic spline near the zero crossing and then finding the root of the resulting polynomial. An iterative algorithm based on the bisection method is presented that obtains one bit of the result per step and admits an efficient digital implementation using fixed-point representation. In particular, the root estimation iteration involves only two additions, and the initial values can be obtained from finite impulse response (FIR) filters with certain symmetry properties. It is shown that this allows online real-time estimation of timestamps in free-running sampling detector systems with improved accuracy with respect to the more common linear interpolation. The method is evaluated with simulations using ideal and real timing signals, and estimates are given for the resource usage and speed of its implementation. | ||||
| Address | [Aliaga, Ramon J.] Inst Fis Corpuscular, Paterna 46980, Spain, Email: raalva@upvnet.upv.es | ||||
| Corporate Author | Thesis | ||||
| Publisher | Ieee-Inst Electrical Electronics Engineers Inc | Place of Publication | Editor | ||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0018-9499 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | WOS:000411027700008 | Approved | no | ||
| Is ISI | yes | International Collaboration | no | ||
| Call Number | IFIC @ pastor @ | Serial | 3301 | ||
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