GPS baseline vector quality control with carrier- to- noise power density ratio
碩士 === 中正理工學院 === 軍事工程研究所 === 88 === GPS has been the highly accurate positioning technique through many researchers'' efforts over twenty years, but multipath effect, signal fraction, and other uncertain influences may decline the accuracy of position. The key for maintaining the high acc...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/12991165532957893218 |
| Summary: | 碩士 === 中正理工學院 === 軍事工程研究所 === 88 === GPS has been the highly accurate positioning technique through many researchers'' efforts over twenty years, but multipath effect, signal fraction, and other uncertain influences may decline the accuracy of position. The key for maintaining the high accuracy merit of GPS positioning is the quality of GPS raw data, so the quality control procedure is needed. Since the carrier-to-noise ratio of beat phase observation is related to GPS raw data and the new RINEX format of version 2.1 does include the ratio values, the carrier-to-noise ratio is considered as the quality index in this study.
The main goal of this study is to develop an approach for persevering or improving the reliability of GPS positioning when GPS receiver is located in the obstructed environment during the field work. The characteristic analyses of carrier-to-noise ratio for combinations of GPS receivers and antennae were done then index template approach was created for baseline vector quality control. The index template approach is verified with the experiment of national standard baseline field located in Chung Cheng Institute of Technology that does indicate the feasibility of this elaborated approach during this study.
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