Title :
Maximum Likelihood Estimation and Non-Linear Least Squares Fitting Implementation in FPGA Devices for High Resolution Hodoscopy
Author :
Blasco, Jose M. ; Sanchis, E. ; Gonzalez, V. ; Martin, Jose D. ; Egea, Francisco J. ; Barrientos, Diego ; Granero, Domingo ; Sanchis-Sanchez, Enrique
Author_Institution :
Dept. de Fisioterapia, Univ. de Valencia, Valencia, Spain
Abstract :
This work compares two possible solutions to achieve a high resolution in a hodoscope based on Plastic Scintillating Fibers (PSF) by obtaining the point of maximum interaction of the radioactive beam with the detector. The two fitting algorithms are the Maximum Likelihood Estimation and a non-linear least-squares fitting with the Levenberg-Marquardt Algorithm. Both approaches have been tested, compared and implemented in Field Programmable Gate Array (FPGA) devices.
Keywords :
biomedical equipment; field programmable gate arrays; least squares approximations; maximum likelihood estimation; FPGA devices; Levenberg-Marquardt algorithm; field programmable gate array devices; fitting algorithms; high resolution hodoscopy; maximum interaction point; maximum likelihood estimation; nonlinear least square fitting implementation; plastic scintillating fibers; radioactive beam; Detectors; Field programmable gate arrays; Maximum likelihood estimation; Optimization; Program processors; Signal processing algorithms; Vectors; Algorithm implementation; FPGA; beam calibration; high-resolution; hodoscopy; maximum interaction;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2013.2265174
