Effects of Multi-targets of seastages in signal detection performance.
| Autor: | TING-HSIN CHANG, 張廷新 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 In recent years, many countries’Navy are changing their traditional radars to phase array radar system on their warships. But phase array radar system was designed for Army in the beginning in Taiwan, so there might exist many problems if we just move system on warships, such as six-axles movement, complicated multi-targets of seastages, motion sickness. Those conditions never happened to Army radar operators before. In this study, a radar simulation program which contains different movement (foreground/background) and clutter levels (heavy/middle/light) is used to test the experiments. Reaction times and data are collected and analyzed from experienced and inexperienced operators. These results of the experiment were as follow: (1) clutter level was the most effective factor upon reaction time and score of experienced and inexperienced operators. (2)The experienced operators got higher scores than inexperienced operators. The reasons maybe that experienced operators are well known of threatening evaluation. (3) The reaction time of different movement of foreground and background between experienced and inexperienced operators were almost not remarkable. (4)The score of different movement of foreground and background between experienced and inexperienced operators were significant. It is believed that inexperienced operators will get higher scores after training and learning importance of threatening evaluation. Most important of all, radar program designers must strive to reduce amount of clutters, and that will promote signal detection performance of radar operators. Keywords: signal detection theory(SDT),reaction time, vibration, clutter, multi-target |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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