Type
Text
Type
Thesis
Advisor
Dhadwal, Harbans S | Subbarao, Muralidhara.
Date
2012-05-01
Keywords
Engineering--Electrical engineering | laser scanning system, optical receivers, piccolo controlstick, precise angular measurement, Remote angular measurement, small angular measurement
Department
Department of Electrical Engineering
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/70790
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
This report presents a method for the remote measurement of angular position of flat surfaces, especially focussing on improving the accuracy of the measured angle. The technique is based on obtaining the temporal signature of non-linear, reflecting image patterns that are printed on to the surface of the target. The system uses a laser scanning system for reading a bar pattern, which can be represented by a pulse position modulation scheme. Angular orientation can be measured upto the distance of one meter. The complete angle measurement system comprises of a laser scanning section and a photodiode receiver which provides the raw signal which is processed by a 32-bit microcontroller using an analog to digital converter and a time base counter. The recovered digital signal from the analog to digital converter is processed to recover the rotational angle of a flat surface at a distance of 1 meter from the scanning mirror. The system has a measured angular resolution which is better than +/-0.005 degree over a 2 degree span when the printed bars are having the initial orientation from the vertical axis greater than 80° with respect to horizontal scanning axis. The angular resolution is +/- 0.05 degree for an absolute angle measurement in the range of -85 degree to +85 degree. | 71 pages
Recommended Citation
Aggarwal, Neha, "Remote Angular Measurement of Flat Targets" (2012). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 9.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/9